From af79c4ee3b53ce5ebcecb8bba88d949bc8aca8b5 Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 11:39:00 -0700
Subject: [PATCH 01/11] Add copyright headers to generated code and Getting
 Help to README

Add a post-generation hook that prepends the Apache-2.0 copyright header
to all generated .py files that don't already have one. Hand-written
files are skipped since they already carry the header.

Add a Getting Help section to the README directing users to GitHub Issues
for bugs, IonQ Support for account questions, and docs.ionq.com for API
documentation.

Closes #18, closes #19.
---
 README.md                         | 6 ++++++
 openapi-python-client-config.yaml | 1 +
 2 files changed, 7 insertions(+)

diff --git a/README.md b/README.md
index 6b7fd9c..514430e 100644
--- a/README.md
+++ b/README.md
@@ -402,6 +402,12 @@ git tag v0.1.0
 git push origin v0.1.0
 ```
 
+## Getting help
+
+- **Bug reports and feature requests** - [GitHub Issues](https://github.com/ionq/ionq-core-python/issues)
+- **Account, billing, or QPU questions** - [IonQ Support](https://ionq.com/contact)
+- **API documentation** - [docs.ionq.com](https://docs.ionq.com/)
+
 ## License
 
 Apache-2.0. See [LICENSE](LICENSE) for details.
diff --git a/openapi-python-client-config.yaml b/openapi-python-client-config.yaml
index f2c8973..2bb4de4 100644
--- a/openapi-python-client-config.yaml
+++ b/openapi-python-client-config.yaml
@@ -4,6 +4,7 @@ literal_enums: true
 
 post_hooks:
   - "python -Ic \"p=__import__('pathlib').Path('client.py');p.write_text(p.read_text().replace('    token: str\\n','    token: str = field(repr=False)\\n'))\""
+  - "python -Ic \"h='# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n';[p.write_text(h+p.read_text()) for p in __import__('pathlib').Path('.').rglob('*.py') if not p.read_text().startswith('# Copyright')]\""
   - "ruff check . --fix-only"
   - "ruff format ."
 

From 6471292b98ba87f76aac48223f5fad07b59a0a8f Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 11:41:54 -0700
Subject: [PATCH 02/11] Use walrus operator to read each file once in copyright
 hook

---
 openapi-python-client-config.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openapi-python-client-config.yaml b/openapi-python-client-config.yaml
index 2bb4de4..5eb9974 100644
--- a/openapi-python-client-config.yaml
+++ b/openapi-python-client-config.yaml
@@ -4,7 +4,7 @@ literal_enums: true
 
 post_hooks:
   - "python -Ic \"p=__import__('pathlib').Path('client.py');p.write_text(p.read_text().replace('    token: str\\n','    token: str = field(repr=False)\\n'))\""
-  - "python -Ic \"h='# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n';[p.write_text(h+p.read_text()) for p in __import__('pathlib').Path('.').rglob('*.py') if not p.read_text().startswith('# Copyright')]\""
+  - "python -Ic \"h='# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n';[p.write_text(h+t) for p in __import__('pathlib').Path('.').rglob('*.py') if not (t:=p.read_text()).startswith('# Copyright')]\""
   - "ruff check . --fix-only"
   - "ruff format ."
 

From ddb7865a484d498124a135d1e23f891178b9ef96 Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 11:51:31 -0700
Subject: [PATCH 03/11] Remove unnecessary guard from copyright hook

Generated files are always fresh - no need to check for existing headers.
---
 openapi-python-client-config.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openapi-python-client-config.yaml b/openapi-python-client-config.yaml
index 5eb9974..349c997 100644
--- a/openapi-python-client-config.yaml
+++ b/openapi-python-client-config.yaml
@@ -4,7 +4,7 @@ literal_enums: true
 
 post_hooks:
   - "python -Ic \"p=__import__('pathlib').Path('client.py');p.write_text(p.read_text().replace('    token: str\\n','    token: str = field(repr=False)\\n'))\""
-  - "python -Ic \"h='# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n';[p.write_text(h+t) for p in __import__('pathlib').Path('.').rglob('*.py') if not (t:=p.read_text()).startswith('# Copyright')]\""
+  - "python -Ic \"h='# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n';[p.write_text(h+p.read_text()) for p in __import__('pathlib').Path('.').rglob('*.py')]\""
   - "ruff check . --fix-only"
   - "ruff format ."
 

From 426c556a1896527a9a24cb5103668a032e7e6e6d Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 11:58:33 -0700
Subject: [PATCH 04/11] Remove copyright header from template; post-hook
 handles it

---
 custom-templates/package_init.py.jinja | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/custom-templates/package_init.py.jinja b/custom-templates/package_init.py.jinja
index 59d3878..c602cf0 100644
--- a/custom-templates/package_init.py.jinja
+++ b/custom-templates/package_init.py.jinja
@@ -1,7 +1,4 @@
 {% from "helpers.jinja" import safe_docstring %}
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 {{ safe_docstring(package_description) }}
 from ._exceptions import (
     APIConnectionError,

From d5b3328d032ec3e8ded1eb34921639964506b38d Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 12:22:44 -0700
Subject: [PATCH 05/11] Simplify post hooks from Python one-liners to perl
 regexes

Replace verbose Python __import__/pathlib one-liners with concise
perl -pi -e commands for both the token repr and copyright header
post hooks. Both are shorter, use the same tool, and are
cross-platform (macOS + Linux).
---
 openapi-python-client-config.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/openapi-python-client-config.yaml b/openapi-python-client-config.yaml
index 349c997..cc90cbd 100644
--- a/openapi-python-client-config.yaml
+++ b/openapi-python-client-config.yaml
@@ -3,8 +3,8 @@ package_name_override: ionq_core
 literal_enums: true
 
 post_hooks:
-  - "python -Ic \"p=__import__('pathlib').Path('client.py');p.write_text(p.read_text().replace('    token: str\\n','    token: str = field(repr=False)\\n'))\""
-  - "python -Ic \"h='# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n';[p.write_text(h+p.read_text()) for p in __import__('pathlib').Path('.').rglob('*.py')]\""
+  - "perl -pi -e 's/token: str\\K$/ = field(repr=False)/' client.py"
+  - "perl -pi -e 'print \"# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n\" if !$s{$ARGV}++' $(find . -name '*.py')"
   - "ruff check . --fix-only"
   - "ruff format ."
 

From 6ad1752ba857bfe4a5ed563a552fe21cdeab7c97 Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 12:26:26 -0700
Subject: [PATCH 06/11] Remove hand-written copyright headers; post-hook is
 sole source

The staleness CI check failed because the post-generation hook
was prepending copyright headers to files that already had them,
producing duplicates. Removing the hand-written headers lets the
hook handle all files uniformly.
---
 ionq_core/__init__.py    | 3 ---
 ionq_core/_exceptions.py | 3 ---
 ionq_core/_extensions.py | 3 ---
 ionq_core/_gates.py      | 3 ---
 ionq_core/_pagination.py | 3 ---
 ionq_core/_polling.py    | 3 ---
 ionq_core/_session.py    | 3 ---
 ionq_core/_transport.py  | 3 ---
 ionq_core/ionq_client.py | 3 ---
 9 files changed, 27 deletions(-)

diff --git a/ionq_core/__init__.py b/ionq_core/__init__.py
index fbee532..2e57748 100644
--- a/ionq_core/__init__.py
+++ b/ionq_core/__init__.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """A client library for accessing IonQ Cloud Platform API"""
 
 from ._exceptions import (
diff --git a/ionq_core/_exceptions.py b/ionq_core/_exceptions.py
index 686deb4..3a534e0 100644
--- a/ionq_core/_exceptions.py
+++ b/ionq_core/_exceptions.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """Structured exceptions for the IonQ API client."""
 
 
diff --git a/ionq_core/_extensions.py b/ionq_core/_extensions.py
index 3844206..80f4c4f 100644
--- a/ionq_core/_extensions.py
+++ b/ionq_core/_extensions.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """Extension API for downstream SDKs building on ionq-core."""
 
 import logging
diff --git a/ionq_core/_gates.py b/ionq_core/_gates.py
index d9b1798..20f842c 100644
--- a/ionq_core/_gates.py
+++ b/ionq_core/_gates.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """Pure-Python unitary matrices for IonQ native gates.
 
 Phase parameters (phi, phi0, phi1) are in turns (fractions of 2*pi).
diff --git a/ionq_core/_pagination.py b/ionq_core/_pagination.py
index 4c28aec..256a456 100644
--- a/ionq_core/_pagination.py
+++ b/ionq_core/_pagination.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """Pagination helpers for cursor-based IonQ API endpoints."""
 
 from __future__ import annotations
diff --git a/ionq_core/_polling.py b/ionq_core/_polling.py
index 33c86d7..9847b7a 100644
--- a/ionq_core/_polling.py
+++ b/ionq_core/_polling.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """Job polling helpers for waiting on quantum job completion."""
 
 from __future__ import annotations
diff --git a/ionq_core/_session.py b/ionq_core/_session.py
index df6d7d7..57e1d87 100644
--- a/ionq_core/_session.py
+++ b/ionq_core/_session.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """Session lifecycle manager for IonQ QPU sessions."""
 
 from __future__ import annotations
diff --git a/ionq_core/_transport.py b/ionq_core/_transport.py
index a678ae7..10433ff 100644
--- a/ionq_core/_transport.py
+++ b/ionq_core/_transport.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """Transport layer: retry via httpx-retries, error raising for IonQ API responses."""
 
 import httpx
diff --git a/ionq_core/ionq_client.py b/ionq_core/ionq_client.py
index b34198e..829b38d 100644
--- a/ionq_core/ionq_client.py
+++ b/ionq_core/ionq_client.py
@@ -1,6 +1,3 @@
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 """IonQ-specific client convenience wrapper."""
 
 import os

From 86b2c502ac9478726d835d66c88cef3b9008ff32 Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 12:30:02 -0700
Subject: [PATCH 07/11] Regenerate with copyright headers from post-hook

Run the generator so the post-hook adds copyright headers to all
.py files, matching what the staleness CI check produces.
---
 ionq_core/__init__.py                                          | 3 +++
 ionq_core/_exceptions.py                                       | 3 +++
 ionq_core/_extensions.py                                       | 3 +++
 ionq_core/_gates.py                                            | 3 +++
 ionq_core/_pagination.py                                       | 3 +++
 ionq_core/_polling.py                                          | 3 +++
 ionq_core/_session.py                                          | 3 +++
 ionq_core/_transport.py                                        | 3 +++
 ionq_core/api/__init__.py                                      | 3 +++
 ionq_core/api/backends/__init__.py                             | 3 +++
 ionq_core/api/backends/get_backend.py                          | 3 +++
 ionq_core/api/backends/get_backends.py                         | 3 +++
 ionq_core/api/characterizations/__init__.py                    | 3 +++
 ionq_core/api/characterizations/get_characterization.py        | 3 +++
 .../api/characterizations/get_characterizations_for_backend.py | 3 +++
 ionq_core/api/default/__init__.py                              | 3 +++
 ionq_core/api/default/cancel_job.py                            | 3 +++
 ionq_core/api/default/cancel_jobs.py                           | 3 +++
 ionq_core/api/default/create_job.py                            | 3 +++
 ionq_core/api/default/create_session.py                        | 3 +++
 ionq_core/api/default/delete_job.py                            | 3 +++
 ionq_core/api/default/delete_jobs.py                           | 3 +++
 ionq_core/api/default/end_session.py                           | 3 +++
 ionq_core/api/default/estimate_job_cost.py                     | 3 +++
 ionq_core/api/default/get_compiled_file.py                     | 3 +++
 ionq_core/api/default/get_job.py                               | 3 +++
 ionq_core/api/default/get_job_cost.py                          | 3 +++
 ionq_core/api/default/get_job_probabilities.py                 | 3 +++
 ionq_core/api/default/get_jobs.py                              | 3 +++
 ionq_core/api/default/get_session.py                           | 3 +++
 ionq_core/api/default/get_session_jobs.py                      | 3 +++
 ionq_core/api/default/get_sessions.py                          | 3 +++
 ionq_core/api/default/get_variant_histogram.py                 | 3 +++
 ionq_core/api/default/get_variant_probabilities.py             | 3 +++
 ionq_core/api/default/get_variant_shots.py                     | 3 +++
 ionq_core/api/usage/__init__.py                                | 3 +++
 ionq_core/api/usage/get_usages.py                              | 3 +++
 ionq_core/api/whoami/__init__.py                               | 3 +++
 ionq_core/api/whoami/get_whoami.py                             | 3 +++
 ionq_core/client.py                                            | 3 +++
 ionq_core/errors.py                                            | 3 +++
 ionq_core/ionq_client.py                                       | 3 +++
 ionq_core/models/__init__.py                                   | 3 +++
 ionq_core/models/add_job_results_payload.py                    | 3 +++
 ionq_core/models/add_job_results_response.py                   | 3 +++
 ionq_core/models/ansatz.py                                     | 3 +++
 ionq_core/models/backend.py                                    | 3 +++
 ionq_core/models/bad_request_error.py                          | 3 +++
 ionq_core/models/base_job.py                                   | 3 +++
 ionq_core/models/characterization.py                           | 3 +++
 ionq_core/models/characterization_fidelity.py                  | 3 +++
 ionq_core/models/characterization_fidelity_spam.py             | 3 +++
 ionq_core/models/characterization_timing.py                    | 3 +++
 ionq_core/models/circuit_job_compilation_settings.py           | 3 +++
 ionq_core/models/circuit_job_creation_payload.py               | 3 +++
 ionq_core/models/circuit_job_creation_payload_settings.py      | 3 +++
 .../circuit_job_creation_payload_settings_compilation.py       | 3 +++
 .../circuit_job_creation_payload_settings_error_mitigation.py  | 3 +++
 ionq_core/models/circuit_job_creation_payload_type.py          | 3 +++
 ionq_core/models/circuit_job_result.py                         | 3 +++
 ionq_core/models/circuit_job_result_histogram.py               | 3 +++
 ionq_core/models/circuit_job_result_probabilities.py           | 3 +++
 ionq_core/models/circuit_job_result_shots.py                   | 3 +++
 ionq_core/models/circuit_job_settings.py                       | 3 +++
 ionq_core/models/circuit_job_settings_error_mitigation.py      | 3 +++
 .../circuit_job_settings_error_mitigation_debiasing_type_0.py  | 3 +++
 ...tings_error_mitigation_debiasing_type_0_phi_chi_twirling.py | 3 +++
 ionq_core/models/circuit_job_stats.py                          | 3 +++
 ionq_core/models/create_session_request.py                     | 3 +++
 ionq_core/models/error.py                                      | 3 +++
 ionq_core/models/failure.py                                    | 3 +++
 ionq_core/models/failure_code.py                               | 3 +++
 ionq_core/models/gate_native_gate.py                           | 3 +++
 ionq_core/models/gate_qis_gate.py                              | 3 +++
 ionq_core/models/generic_quantum_function_input.py             | 3 +++
 ionq_core/models/generic_quantum_function_input_data.py        | 3 +++
 ionq_core/models/get_backend_backend.py                        | 3 +++
 ionq_core/models/get_characterization_backend.py               | 3 +++
 ionq_core/models/get_characterizations_for_backend_backend.py  | 3 +++
 .../models/get_characterizations_for_backend_response_200.py   | 3 +++
 ionq_core/models/get_circuit_job_response.py                   | 3 +++
 ionq_core/models/get_compiled_file_lang.py                     | 3 +++
 ionq_core/models/get_job_cost_response.py                      | 3 +++
 ionq_core/models/get_job_cost_response_cost.py                 | 3 +++
 ionq_core/models/get_job_cost_response_estimated_cost.py       | 3 +++
 ionq_core/models/get_job_estimate_query_params.py              | 3 +++
 ionq_core/models/get_job_estimate_response.py                  | 3 +++
 ionq_core/models/get_job_estimate_response_rate_information.py | 3 +++
 ionq_core/models/get_job_response.py                           | 3 +++
 ionq_core/models/get_jobs_query_params.py                      | 3 +++
 ionq_core/models/get_jobs_response.py                          | 3 +++
 ionq_core/models/get_results_response.py                       | 3 +++
 ionq_core/models/get_sessions_query_params.py                  | 3 +++
 ionq_core/models/get_variant_results_response.py               | 3 +++
 ionq_core/models/group_by.py                                   | 3 +++
 ionq_core/models/group_usage.py                                | 3 +++
 ionq_core/models/hamiltonian_energy_data.py                    | 3 +++
 ionq_core/models/hamiltonian_energy_input.py                   | 3 +++
 ionq_core/models/hamiltonian_energy_input_data.py              | 3 +++
 ionq_core/models/hamiltonian_energy_input_data_type.py         | 3 +++
 ionq_core/models/hamiltonian_pauli_term.py                     | 3 +++
 ionq_core/models/job_canceled_response.py                      | 3 +++
 ionq_core/models/job_canceled_response_status.py               | 3 +++
 ionq_core/models/job_creation_response.py                      | 3 +++
 ionq_core/models/job_deleted_response.py                       | 3 +++
 ionq_core/models/job_deleted_response_status.py                | 3 +++
 ionq_core/models/job_metadata.py                               | 3 +++
 ionq_core/models/job_q_ctrl_status.py                          | 3 +++
 ionq_core/models/job_status.py                                 | 3 +++
 ionq_core/models/jobs_bulk_operation_request.py                | 3 +++
 ionq_core/models/jobs_canceled_response.py                     | 3 +++
 ionq_core/models/jobs_canceled_response_status.py              | 3 +++
 ionq_core/models/jobs_deleted_response.py                      | 3 +++
 ionq_core/models/jobs_deleted_response_status.py               | 3 +++
 ionq_core/models/json_multi_circuit_input.py                   | 3 +++
 ionq_core/models/json_multi_circuit_input_gateset.py           | 3 +++
 ionq_core/models/json_multi_circuit_job.py                     | 3 +++
 ionq_core/models/json_multi_circuit_job_settings.py            | 3 +++
 .../models/json_multi_circuit_job_settings_compilation.py      | 3 +++
 .../models/json_multi_circuit_job_settings_error_mitigation.py | 3 +++
 ionq_core/models/json_multi_circuit_job_type.py                | 3 +++
 ionq_core/models/json_object.py                                | 3 +++
 ionq_core/models/linear_constraint.py                          | 3 +++
 ionq_core/models/modality.py                                   | 3 +++
 ionq_core/models/native_circuit.py                             | 3 +++
 ionq_core/models/native_circuit_gateset.py                     | 3 +++
 ionq_core/models/native_circuit_input.py                       | 3 +++
 ionq_core/models/native_circuit_input_gateset.py               | 3 +++
 ionq_core/models/native_gate.py                                | 3 +++
 ionq_core/models/noise.py                                      | 3 +++
 ionq_core/models/noise_model.py                                | 3 +++
 ionq_core/models/number_map.py                                 | 3 +++
 ionq_core/models/qis_circuit.py                                | 3 +++
 ionq_core/models/qis_circuit_gateset.py                        | 3 +++
 ionq_core/models/qis_circuit_input.py                          | 3 +++
 ionq_core/models/qis_circuit_input_gateset.py                  | 3 +++
 ionq_core/models/qis_gate.py                                   | 3 +++
 ionq_core/models/quadratic_constraint.py                       | 3 +++
 ionq_core/models/quantum_function_job_creation_payload.py      | 3 +++
 .../models/quantum_function_job_creation_payload_settings.py   | 3 +++
 ..._function_job_creation_payload_settings_error_mitigation.py | 3 +++
 ionq_core/models/quantum_function_job_creation_payload_type.py | 3 +++
 ionq_core/models/registers.py                                  | 3 +++
 ionq_core/models/request_validation.py                         | 3 +++
 ionq_core/models/session.py                                    | 3 +++
 ionq_core/models/session_cost_limit.py                         | 3 +++
 ionq_core/models/session_settings.py                           | 3 +++
 ionq_core/models/session_settings_request.py                   | 3 +++
 ionq_core/models/session_status_enum.py                        | 3 +++
 ionq_core/models/sessions_response.py                          | 3 +++
 ionq_core/models/usage.py                                      | 3 +++
 ionq_core/models/usages.py                                     | 3 +++
 ionq_core/models/whoami.py                                     | 3 +++
 ionq_core/types.py                                             | 3 +++
 154 files changed, 462 insertions(+)

diff --git a/ionq_core/__init__.py b/ionq_core/__init__.py
index 2e57748..fbee532 100644
--- a/ionq_core/__init__.py
+++ b/ionq_core/__init__.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """A client library for accessing IonQ Cloud Platform API"""
 
 from ._exceptions import (
diff --git a/ionq_core/_exceptions.py b/ionq_core/_exceptions.py
index 3a534e0..686deb4 100644
--- a/ionq_core/_exceptions.py
+++ b/ionq_core/_exceptions.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """Structured exceptions for the IonQ API client."""
 
 
diff --git a/ionq_core/_extensions.py b/ionq_core/_extensions.py
index 80f4c4f..3844206 100644
--- a/ionq_core/_extensions.py
+++ b/ionq_core/_extensions.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """Extension API for downstream SDKs building on ionq-core."""
 
 import logging
diff --git a/ionq_core/_gates.py b/ionq_core/_gates.py
index 20f842c..d9b1798 100644
--- a/ionq_core/_gates.py
+++ b/ionq_core/_gates.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """Pure-Python unitary matrices for IonQ native gates.
 
 Phase parameters (phi, phi0, phi1) are in turns (fractions of 2*pi).
diff --git a/ionq_core/_pagination.py b/ionq_core/_pagination.py
index 256a456..4c28aec 100644
--- a/ionq_core/_pagination.py
+++ b/ionq_core/_pagination.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """Pagination helpers for cursor-based IonQ API endpoints."""
 
 from __future__ import annotations
diff --git a/ionq_core/_polling.py b/ionq_core/_polling.py
index 9847b7a..33c86d7 100644
--- a/ionq_core/_polling.py
+++ b/ionq_core/_polling.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """Job polling helpers for waiting on quantum job completion."""
 
 from __future__ import annotations
diff --git a/ionq_core/_session.py b/ionq_core/_session.py
index 57e1d87..df6d7d7 100644
--- a/ionq_core/_session.py
+++ b/ionq_core/_session.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """Session lifecycle manager for IonQ QPU sessions."""
 
 from __future__ import annotations
diff --git a/ionq_core/_transport.py b/ionq_core/_transport.py
index 10433ff..a678ae7 100644
--- a/ionq_core/_transport.py
+++ b/ionq_core/_transport.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """Transport layer: retry via httpx-retries, error raising for IonQ API responses."""
 
 import httpx
diff --git a/ionq_core/api/__init__.py b/ionq_core/api/__init__.py
index dc035f4..ecdc005 100644
--- a/ionq_core/api/__init__.py
+++ b/ionq_core/api/__init__.py
@@ -1 +1,4 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains methods for accessing the API """
diff --git a/ionq_core/api/backends/__init__.py b/ionq_core/api/backends/__init__.py
index c9921b5..a8af097 100644
--- a/ionq_core/api/backends/__init__.py
+++ b/ionq_core/api/backends/__init__.py
@@ -1 +1,4 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains endpoint functions for accessing the API """
diff --git a/ionq_core/api/backends/get_backend.py b/ionq_core/api/backends/get_backend.py
index 4724203..fba04f3 100644
--- a/ionq_core/api/backends/get_backend.py
+++ b/ionq_core/api/backends/get_backend.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/backends/get_backends.py b/ionq_core/api/backends/get_backends.py
index 998deab..1b5c45d 100644
--- a/ionq_core/api/backends/get_backends.py
+++ b/ionq_core/api/backends/get_backends.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/characterizations/__init__.py b/ionq_core/api/characterizations/__init__.py
index c9921b5..a8af097 100644
--- a/ionq_core/api/characterizations/__init__.py
+++ b/ionq_core/api/characterizations/__init__.py
@@ -1 +1,4 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains endpoint functions for accessing the API """
diff --git a/ionq_core/api/characterizations/get_characterization.py b/ionq_core/api/characterizations/get_characterization.py
index 4ab9cca..58f0038 100644
--- a/ionq_core/api/characterizations/get_characterization.py
+++ b/ionq_core/api/characterizations/get_characterization.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/characterizations/get_characterizations_for_backend.py b/ionq_core/api/characterizations/get_characterizations_for_backend.py
index df6d356..6295c90 100644
--- a/ionq_core/api/characterizations/get_characterizations_for_backend.py
+++ b/ionq_core/api/characterizations/get_characterizations_for_backend.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/__init__.py b/ionq_core/api/default/__init__.py
index c9921b5..a8af097 100644
--- a/ionq_core/api/default/__init__.py
+++ b/ionq_core/api/default/__init__.py
@@ -1 +1,4 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains endpoint functions for accessing the API """
diff --git a/ionq_core/api/default/cancel_job.py b/ionq_core/api/default/cancel_job.py
index 0ca3e58..545ec9a 100644
--- a/ionq_core/api/default/cancel_job.py
+++ b/ionq_core/api/default/cancel_job.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/cancel_jobs.py b/ionq_core/api/default/cancel_jobs.py
index 3fc7b24..0a8ea2a 100644
--- a/ionq_core/api/default/cancel_jobs.py
+++ b/ionq_core/api/default/cancel_jobs.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/create_job.py b/ionq_core/api/default/create_job.py
index 2efe84b..9f3a5a6 100644
--- a/ionq_core/api/default/create_job.py
+++ b/ionq_core/api/default/create_job.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/create_session.py b/ionq_core/api/default/create_session.py
index 2b99611..680e5cb 100644
--- a/ionq_core/api/default/create_session.py
+++ b/ionq_core/api/default/create_session.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/delete_job.py b/ionq_core/api/default/delete_job.py
index 0d5f0be..25c6698 100644
--- a/ionq_core/api/default/delete_job.py
+++ b/ionq_core/api/default/delete_job.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/delete_jobs.py b/ionq_core/api/default/delete_jobs.py
index a49e356..36db6bf 100644
--- a/ionq_core/api/default/delete_jobs.py
+++ b/ionq_core/api/default/delete_jobs.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/end_session.py b/ionq_core/api/default/end_session.py
index c81c4cb..21d9802 100644
--- a/ionq_core/api/default/end_session.py
+++ b/ionq_core/api/default/end_session.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/estimate_job_cost.py b/ionq_core/api/default/estimate_job_cost.py
index f144ea4..fb8d300 100644
--- a/ionq_core/api/default/estimate_job_cost.py
+++ b/ionq_core/api/default/estimate_job_cost.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_compiled_file.py b/ionq_core/api/default/get_compiled_file.py
index fcc740c..d95ba13 100644
--- a/ionq_core/api/default/get_compiled_file.py
+++ b/ionq_core/api/default/get_compiled_file.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_job.py b/ionq_core/api/default/get_job.py
index 47e2869..efc8f52 100644
--- a/ionq_core/api/default/get_job.py
+++ b/ionq_core/api/default/get_job.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_job_cost.py b/ionq_core/api/default/get_job_cost.py
index 6f2675b..e8b74e6 100644
--- a/ionq_core/api/default/get_job_cost.py
+++ b/ionq_core/api/default/get_job_cost.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_job_probabilities.py b/ionq_core/api/default/get_job_probabilities.py
index eeaeadc..d2f6143 100644
--- a/ionq_core/api/default/get_job_probabilities.py
+++ b/ionq_core/api/default/get_job_probabilities.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_jobs.py b/ionq_core/api/default/get_jobs.py
index f511d06..0ff90db 100644
--- a/ionq_core/api/default/get_jobs.py
+++ b/ionq_core/api/default/get_jobs.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_session.py b/ionq_core/api/default/get_session.py
index 3ec0e6f..e83f4f1 100644
--- a/ionq_core/api/default/get_session.py
+++ b/ionq_core/api/default/get_session.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_session_jobs.py b/ionq_core/api/default/get_session_jobs.py
index c81e0c2..03ab64e 100644
--- a/ionq_core/api/default/get_session_jobs.py
+++ b/ionq_core/api/default/get_session_jobs.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_sessions.py b/ionq_core/api/default/get_sessions.py
index ef5534f..eeeca76 100644
--- a/ionq_core/api/default/get_sessions.py
+++ b/ionq_core/api/default/get_sessions.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_variant_histogram.py b/ionq_core/api/default/get_variant_histogram.py
index ed84900..e48ad55 100644
--- a/ionq_core/api/default/get_variant_histogram.py
+++ b/ionq_core/api/default/get_variant_histogram.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_variant_probabilities.py b/ionq_core/api/default/get_variant_probabilities.py
index cb3681f..3a1d9ae 100644
--- a/ionq_core/api/default/get_variant_probabilities.py
+++ b/ionq_core/api/default/get_variant_probabilities.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/default/get_variant_shots.py b/ionq_core/api/default/get_variant_shots.py
index 339ea1c..f96961c 100644
--- a/ionq_core/api/default/get_variant_shots.py
+++ b/ionq_core/api/default/get_variant_shots.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/usage/__init__.py b/ionq_core/api/usage/__init__.py
index c9921b5..a8af097 100644
--- a/ionq_core/api/usage/__init__.py
+++ b/ionq_core/api/usage/__init__.py
@@ -1 +1,4 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains endpoint functions for accessing the API """
diff --git a/ionq_core/api/usage/get_usages.py b/ionq_core/api/usage/get_usages.py
index c344a44..110a1e5 100644
--- a/ionq_core/api/usage/get_usages.py
+++ b/ionq_core/api/usage/get_usages.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/api/whoami/__init__.py b/ionq_core/api/whoami/__init__.py
index c9921b5..a8af097 100644
--- a/ionq_core/api/whoami/__init__.py
+++ b/ionq_core/api/whoami/__init__.py
@@ -1 +1,4 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains endpoint functions for accessing the API """
diff --git a/ionq_core/api/whoami/get_whoami.py b/ionq_core/api/whoami/get_whoami.py
index f71e4ed..9d67057 100644
--- a/ionq_core/api/whoami/get_whoami.py
+++ b/ionq_core/api/whoami/get_whoami.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from http import HTTPStatus
 from typing import Any, cast
 from urllib.parse import quote
diff --git a/ionq_core/client.py b/ionq_core/client.py
index b1f783b..8953532 100644
--- a/ionq_core/client.py
+++ b/ionq_core/client.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 import ssl
 from typing import Any
 
diff --git a/ionq_core/errors.py b/ionq_core/errors.py
index b912123..9e42266 100644
--- a/ionq_core/errors.py
+++ b/ionq_core/errors.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains shared errors types that can be raised from API functions """
 
 class UnexpectedStatus(Exception):
diff --git a/ionq_core/ionq_client.py b/ionq_core/ionq_client.py
index 829b38d..b34198e 100644
--- a/ionq_core/ionq_client.py
+++ b/ionq_core/ionq_client.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """IonQ-specific client convenience wrapper."""
 
 import os
diff --git a/ionq_core/models/__init__.py b/ionq_core/models/__init__.py
index b42d329..5dafaea 100644
--- a/ionq_core/models/__init__.py
+++ b/ionq_core/models/__init__.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains all the data models used in inputs/outputs """
 
 from .add_job_results_payload import AddJobResultsPayload
diff --git a/ionq_core/models/add_job_results_payload.py b/ionq_core/models/add_job_results_payload.py
index 11fbb20..3b22b9f 100644
--- a/ionq_core/models/add_job_results_payload.py
+++ b/ionq_core/models/add_job_results_payload.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/add_job_results_response.py b/ionq_core/models/add_job_results_response.py
index 6625d37..02253dc 100644
--- a/ionq_core/models/add_job_results_response.py
+++ b/ionq_core/models/add_job_results_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/ansatz.py b/ionq_core/models/ansatz.py
index b855ea8..c155252 100644
--- a/ionq_core/models/ansatz.py
+++ b/ionq_core/models/ansatz.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/backend.py b/ionq_core/models/backend.py
index 5149b6f..ec4f24b 100644
--- a/ionq_core/models/backend.py
+++ b/ionq_core/models/backend.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/bad_request_error.py b/ionq_core/models/bad_request_error.py
index 332588d..0e11278 100644
--- a/ionq_core/models/bad_request_error.py
+++ b/ionq_core/models/bad_request_error.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/base_job.py b/ionq_core/models/base_job.py
index a83aae7..4d5ecd4 100644
--- a/ionq_core/models/base_job.py
+++ b/ionq_core/models/base_job.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/characterization.py b/ionq_core/models/characterization.py
index 3985de7..aef19b9 100644
--- a/ionq_core/models/characterization.py
+++ b/ionq_core/models/characterization.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/characterization_fidelity.py b/ionq_core/models/characterization_fidelity.py
index 8d39333..691858b 100644
--- a/ionq_core/models/characterization_fidelity.py
+++ b/ionq_core/models/characterization_fidelity.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/characterization_fidelity_spam.py b/ionq_core/models/characterization_fidelity_spam.py
index 7df6d97..c6ab354 100644
--- a/ionq_core/models/characterization_fidelity_spam.py
+++ b/ionq_core/models/characterization_fidelity_spam.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/characterization_timing.py b/ionq_core/models/characterization_timing.py
index 33372c8..8c10125 100644
--- a/ionq_core/models/characterization_timing.py
+++ b/ionq_core/models/characterization_timing.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_compilation_settings.py b/ionq_core/models/circuit_job_compilation_settings.py
index fea1198..6774c98 100644
--- a/ionq_core/models/circuit_job_compilation_settings.py
+++ b/ionq_core/models/circuit_job_compilation_settings.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_creation_payload.py b/ionq_core/models/circuit_job_creation_payload.py
index 89ae243..482247c 100644
--- a/ionq_core/models/circuit_job_creation_payload.py
+++ b/ionq_core/models/circuit_job_creation_payload.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_creation_payload_settings.py b/ionq_core/models/circuit_job_creation_payload_settings.py
index f953986..2d8c22d 100644
--- a/ionq_core/models/circuit_job_creation_payload_settings.py
+++ b/ionq_core/models/circuit_job_creation_payload_settings.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_creation_payload_settings_compilation.py b/ionq_core/models/circuit_job_creation_payload_settings_compilation.py
index f6bbca9..31a7d83 100644
--- a/ionq_core/models/circuit_job_creation_payload_settings_compilation.py
+++ b/ionq_core/models/circuit_job_creation_payload_settings_compilation.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_creation_payload_settings_error_mitigation.py b/ionq_core/models/circuit_job_creation_payload_settings_error_mitigation.py
index a38d591..f83b2a1 100644
--- a/ionq_core/models/circuit_job_creation_payload_settings_error_mitigation.py
+++ b/ionq_core/models/circuit_job_creation_payload_settings_error_mitigation.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_creation_payload_type.py b/ionq_core/models/circuit_job_creation_payload_type.py
index e507d48..cbb03e5 100644
--- a/ionq_core/models/circuit_job_creation_payload_type.py
+++ b/ionq_core/models/circuit_job_creation_payload_type.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 CircuitJobCreationPayloadType = Literal['ionq.circuit.v1']
diff --git a/ionq_core/models/circuit_job_result.py b/ionq_core/models/circuit_job_result.py
index 317a470..f6161be 100644
--- a/ionq_core/models/circuit_job_result.py
+++ b/ionq_core/models/circuit_job_result.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_result_histogram.py b/ionq_core/models/circuit_job_result_histogram.py
index 28bed18..f555bfe 100644
--- a/ionq_core/models/circuit_job_result_histogram.py
+++ b/ionq_core/models/circuit_job_result_histogram.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_result_probabilities.py b/ionq_core/models/circuit_job_result_probabilities.py
index 78a17c1..7b2f5cd 100644
--- a/ionq_core/models/circuit_job_result_probabilities.py
+++ b/ionq_core/models/circuit_job_result_probabilities.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_result_shots.py b/ionq_core/models/circuit_job_result_shots.py
index ad939c9..aad1ecb 100644
--- a/ionq_core/models/circuit_job_result_shots.py
+++ b/ionq_core/models/circuit_job_result_shots.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_settings.py b/ionq_core/models/circuit_job_settings.py
index 090357a..47645d5 100644
--- a/ionq_core/models/circuit_job_settings.py
+++ b/ionq_core/models/circuit_job_settings.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_settings_error_mitigation.py b/ionq_core/models/circuit_job_settings_error_mitigation.py
index 704bdb6..5bc529e 100644
--- a/ionq_core/models/circuit_job_settings_error_mitigation.py
+++ b/ionq_core/models/circuit_job_settings_error_mitigation.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0.py b/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0.py
index 17f18a6..025249c 100644
--- a/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0.py
+++ b/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0_phi_chi_twirling.py b/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0_phi_chi_twirling.py
index fb298b9..334c4b3 100644
--- a/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0_phi_chi_twirling.py
+++ b/ionq_core/models/circuit_job_settings_error_mitigation_debiasing_type_0_phi_chi_twirling.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/circuit_job_stats.py b/ionq_core/models/circuit_job_stats.py
index 5b475bd..cf1dd81 100644
--- a/ionq_core/models/circuit_job_stats.py
+++ b/ionq_core/models/circuit_job_stats.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/create_session_request.py b/ionq_core/models/create_session_request.py
index 1f094d9..2e77c88 100644
--- a/ionq_core/models/create_session_request.py
+++ b/ionq_core/models/create_session_request.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/error.py b/ionq_core/models/error.py
index 5a04b15..e80c603 100644
--- a/ionq_core/models/error.py
+++ b/ionq_core/models/error.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/failure.py b/ionq_core/models/failure.py
index f24d7f9..7544c7f 100644
--- a/ionq_core/models/failure.py
+++ b/ionq_core/models/failure.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/failure_code.py b/ionq_core/models/failure_code.py
index 961fe56..49019be 100644
--- a/ionq_core/models/failure_code.py
+++ b/ionq_core/models/failure_code.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 FailureCode = Literal['CompilationError', 'ContractExpiredError', 'DebiasingError', 'InternalError', 'InvalidInput', 'NotEnoughQubits', 'OptimizationError', 'PreflightError', 'QuantumCircuitComplexityError', 'QuantumComputerError', 'QuotaExhaustedError', 'SimulationError', 'SimulationTimeout', 'SystemCancel', 'TooLongPredictedExecutionTime', 'TooManyControls', 'TooManyGates', 'TooManyShots', 'UnknownBillingError', 'UnsupportedGate']
diff --git a/ionq_core/models/gate_native_gate.py b/ionq_core/models/gate_native_gate.py
index 4714aa7..5e17143 100644
--- a/ionq_core/models/gate_native_gate.py
+++ b/ionq_core/models/gate_native_gate.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/gate_qis_gate.py b/ionq_core/models/gate_qis_gate.py
index 1a07921..67f9f62 100644
--- a/ionq_core/models/gate_qis_gate.py
+++ b/ionq_core/models/gate_qis_gate.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/generic_quantum_function_input.py b/ionq_core/models/generic_quantum_function_input.py
index 36525fa..e084e6c 100644
--- a/ionq_core/models/generic_quantum_function_input.py
+++ b/ionq_core/models/generic_quantum_function_input.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/generic_quantum_function_input_data.py b/ionq_core/models/generic_quantum_function_input_data.py
index 96a915c..d2eccc0 100644
--- a/ionq_core/models/generic_quantum_function_input_data.py
+++ b/ionq_core/models/generic_quantum_function_input_data.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_backend_backend.py b/ionq_core/models/get_backend_backend.py
index 6855f01..b6cf10d 100644
--- a/ionq_core/models/get_backend_backend.py
+++ b/ionq_core/models/get_backend_backend.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 GetBackendBackend = Literal['qpu.aria-1', 'qpu.aria-2', 'qpu.forte-1', 'qpu.forte-enterprise-1', 'qpu.forte-enterprise-2', 'qpu.forte-enterprise-3']
diff --git a/ionq_core/models/get_characterization_backend.py b/ionq_core/models/get_characterization_backend.py
index 3a27cea..f2ada3d 100644
--- a/ionq_core/models/get_characterization_backend.py
+++ b/ionq_core/models/get_characterization_backend.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 GetCharacterizationBackend = Literal['qpu.aria-1', 'qpu.aria-2', 'qpu.forte-1', 'qpu.forte-enterprise-1', 'qpu.forte-enterprise-2', 'qpu.forte-enterprise-3']
diff --git a/ionq_core/models/get_characterizations_for_backend_backend.py b/ionq_core/models/get_characterizations_for_backend_backend.py
index 682b135..12b24f9 100644
--- a/ionq_core/models/get_characterizations_for_backend_backend.py
+++ b/ionq_core/models/get_characterizations_for_backend_backend.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 GetCharacterizationsForBackendBackend = Literal['qpu.aria-1', 'qpu.aria-2', 'qpu.forte-1', 'qpu.forte-enterprise-1', 'qpu.forte-enterprise-2', 'qpu.forte-enterprise-3']
diff --git a/ionq_core/models/get_characterizations_for_backend_response_200.py b/ionq_core/models/get_characterizations_for_backend_response_200.py
index 70a7f90..b8591fb 100644
--- a/ionq_core/models/get_characterizations_for_backend_response_200.py
+++ b/ionq_core/models/get_characterizations_for_backend_response_200.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_circuit_job_response.py b/ionq_core/models/get_circuit_job_response.py
index 6c9cb1c..6a44a88 100644
--- a/ionq_core/models/get_circuit_job_response.py
+++ b/ionq_core/models/get_circuit_job_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_compiled_file_lang.py b/ionq_core/models/get_compiled_file_lang.py
index 2d4ebfe..7aef42f 100644
--- a/ionq_core/models/get_compiled_file_lang.py
+++ b/ionq_core/models/get_compiled_file_lang.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 GetCompiledFileLang = Literal['native', 'qasm3']
diff --git a/ionq_core/models/get_job_cost_response.py b/ionq_core/models/get_job_cost_response.py
index 91208b9..b07776f 100644
--- a/ionq_core/models/get_job_cost_response.py
+++ b/ionq_core/models/get_job_cost_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_job_cost_response_cost.py b/ionq_core/models/get_job_cost_response_cost.py
index f22c32a..c47a0d1 100644
--- a/ionq_core/models/get_job_cost_response_cost.py
+++ b/ionq_core/models/get_job_cost_response_cost.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_job_cost_response_estimated_cost.py b/ionq_core/models/get_job_cost_response_estimated_cost.py
index 6c9a936..d7fc71a 100644
--- a/ionq_core/models/get_job_cost_response_estimated_cost.py
+++ b/ionq_core/models/get_job_cost_response_estimated_cost.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_job_estimate_query_params.py b/ionq_core/models/get_job_estimate_query_params.py
index 17b96c8..76fe491 100644
--- a/ionq_core/models/get_job_estimate_query_params.py
+++ b/ionq_core/models/get_job_estimate_query_params.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_job_estimate_response.py b/ionq_core/models/get_job_estimate_response.py
index 0dc4fa8..4b14906 100644
--- a/ionq_core/models/get_job_estimate_response.py
+++ b/ionq_core/models/get_job_estimate_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_job_estimate_response_rate_information.py b/ionq_core/models/get_job_estimate_response_rate_information.py
index 8f2c938..3dd2382 100644
--- a/ionq_core/models/get_job_estimate_response_rate_information.py
+++ b/ionq_core/models/get_job_estimate_response_rate_information.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_job_response.py b/ionq_core/models/get_job_response.py
index d37132d..ef9d6fc 100644
--- a/ionq_core/models/get_job_response.py
+++ b/ionq_core/models/get_job_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_jobs_query_params.py b/ionq_core/models/get_jobs_query_params.py
index 7aa2260..1c300d5 100644
--- a/ionq_core/models/get_jobs_query_params.py
+++ b/ionq_core/models/get_jobs_query_params.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_jobs_response.py b/ionq_core/models/get_jobs_response.py
index e4c3014..80cafce 100644
--- a/ionq_core/models/get_jobs_response.py
+++ b/ionq_core/models/get_jobs_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_results_response.py b/ionq_core/models/get_results_response.py
index 05f3f0c..589c444 100644
--- a/ionq_core/models/get_results_response.py
+++ b/ionq_core/models/get_results_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_sessions_query_params.py b/ionq_core/models/get_sessions_query_params.py
index c0ebb43..d641545 100644
--- a/ionq_core/models/get_sessions_query_params.py
+++ b/ionq_core/models/get_sessions_query_params.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/get_variant_results_response.py b/ionq_core/models/get_variant_results_response.py
index 4409286..949fae7 100644
--- a/ionq_core/models/get_variant_results_response.py
+++ b/ionq_core/models/get_variant_results_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/group_by.py b/ionq_core/models/group_by.py
index 6e6053b..d621d46 100644
--- a/ionq_core/models/group_by.py
+++ b/ionq_core/models/group_by.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 GroupBy = Literal['job', 'project', 'user']
diff --git a/ionq_core/models/group_usage.py b/ionq_core/models/group_usage.py
index 1cbee24..a13c9ee 100644
--- a/ionq_core/models/group_usage.py
+++ b/ionq_core/models/group_usage.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/hamiltonian_energy_data.py b/ionq_core/models/hamiltonian_energy_data.py
index fffe715..f81d5a8 100644
--- a/ionq_core/models/hamiltonian_energy_data.py
+++ b/ionq_core/models/hamiltonian_energy_data.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/hamiltonian_energy_input.py b/ionq_core/models/hamiltonian_energy_input.py
index b8b80cd..2d287f1 100644
--- a/ionq_core/models/hamiltonian_energy_input.py
+++ b/ionq_core/models/hamiltonian_energy_input.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/hamiltonian_energy_input_data.py b/ionq_core/models/hamiltonian_energy_input_data.py
index d4bd812..e5bbc52 100644
--- a/ionq_core/models/hamiltonian_energy_input_data.py
+++ b/ionq_core/models/hamiltonian_energy_input_data.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/hamiltonian_energy_input_data_type.py b/ionq_core/models/hamiltonian_energy_input_data_type.py
index 3e3ac14..4d3f671 100644
--- a/ionq_core/models/hamiltonian_energy_input_data_type.py
+++ b/ionq_core/models/hamiltonian_energy_input_data_type.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 HamiltonianEnergyInputDataType = Literal['hamiltonian-energy']
diff --git a/ionq_core/models/hamiltonian_pauli_term.py b/ionq_core/models/hamiltonian_pauli_term.py
index e8d11f0..f1d64a0 100644
--- a/ionq_core/models/hamiltonian_pauli_term.py
+++ b/ionq_core/models/hamiltonian_pauli_term.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/job_canceled_response.py b/ionq_core/models/job_canceled_response.py
index 88a5c9c..44f40fc 100644
--- a/ionq_core/models/job_canceled_response.py
+++ b/ionq_core/models/job_canceled_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/job_canceled_response_status.py b/ionq_core/models/job_canceled_response_status.py
index 4516efd..b3783b6 100644
--- a/ionq_core/models/job_canceled_response_status.py
+++ b/ionq_core/models/job_canceled_response_status.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JobCanceledResponseStatus = Literal['canceled']
diff --git a/ionq_core/models/job_creation_response.py b/ionq_core/models/job_creation_response.py
index 9e73f9f..af9a218 100644
--- a/ionq_core/models/job_creation_response.py
+++ b/ionq_core/models/job_creation_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/job_deleted_response.py b/ionq_core/models/job_deleted_response.py
index 9e8453b..867c547 100644
--- a/ionq_core/models/job_deleted_response.py
+++ b/ionq_core/models/job_deleted_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/job_deleted_response_status.py b/ionq_core/models/job_deleted_response_status.py
index 37e47d0..2bbef20 100644
--- a/ionq_core/models/job_deleted_response_status.py
+++ b/ionq_core/models/job_deleted_response_status.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JobDeletedResponseStatus = Literal['deleted']
diff --git a/ionq_core/models/job_metadata.py b/ionq_core/models/job_metadata.py
index b66651b..db7bd8c 100644
--- a/ionq_core/models/job_metadata.py
+++ b/ionq_core/models/job_metadata.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/job_q_ctrl_status.py b/ionq_core/models/job_q_ctrl_status.py
index fa0fc73..83c5748 100644
--- a/ionq_core/models/job_q_ctrl_status.py
+++ b/ionq_core/models/job_q_ctrl_status.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JobQCtrlStatus = Literal['complete', 'max_iteration', 'running']
diff --git a/ionq_core/models/job_status.py b/ionq_core/models/job_status.py
index def021e..60b89b6 100644
--- a/ionq_core/models/job_status.py
+++ b/ionq_core/models/job_status.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JobStatus = Literal['canceled', 'completed', 'failed', 'ready', 'started', 'submitted']
diff --git a/ionq_core/models/jobs_bulk_operation_request.py b/ionq_core/models/jobs_bulk_operation_request.py
index 8ebb3ff..5c2fab6 100644
--- a/ionq_core/models/jobs_bulk_operation_request.py
+++ b/ionq_core/models/jobs_bulk_operation_request.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/jobs_canceled_response.py b/ionq_core/models/jobs_canceled_response.py
index 0849261..ec3f428 100644
--- a/ionq_core/models/jobs_canceled_response.py
+++ b/ionq_core/models/jobs_canceled_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/jobs_canceled_response_status.py b/ionq_core/models/jobs_canceled_response_status.py
index 795573f..4bbccbe 100644
--- a/ionq_core/models/jobs_canceled_response_status.py
+++ b/ionq_core/models/jobs_canceled_response_status.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JobsCanceledResponseStatus = Literal['canceled']
diff --git a/ionq_core/models/jobs_deleted_response.py b/ionq_core/models/jobs_deleted_response.py
index 45e0ef2..7c0bfdc 100644
--- a/ionq_core/models/jobs_deleted_response.py
+++ b/ionq_core/models/jobs_deleted_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/jobs_deleted_response_status.py b/ionq_core/models/jobs_deleted_response_status.py
index 55d328b..6bdf9e8 100644
--- a/ionq_core/models/jobs_deleted_response_status.py
+++ b/ionq_core/models/jobs_deleted_response_status.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JobsDeletedResponseStatus = Literal['deleted']
diff --git a/ionq_core/models/json_multi_circuit_input.py b/ionq_core/models/json_multi_circuit_input.py
index 81433fa..7f8bbda 100644
--- a/ionq_core/models/json_multi_circuit_input.py
+++ b/ionq_core/models/json_multi_circuit_input.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/json_multi_circuit_input_gateset.py b/ionq_core/models/json_multi_circuit_input_gateset.py
index c351b5a..ff7b878 100644
--- a/ionq_core/models/json_multi_circuit_input_gateset.py
+++ b/ionq_core/models/json_multi_circuit_input_gateset.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JsonMultiCircuitInputGateset = Literal['native', 'qis']
diff --git a/ionq_core/models/json_multi_circuit_job.py b/ionq_core/models/json_multi_circuit_job.py
index 9f34451..7ad4f47 100644
--- a/ionq_core/models/json_multi_circuit_job.py
+++ b/ionq_core/models/json_multi_circuit_job.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/json_multi_circuit_job_settings.py b/ionq_core/models/json_multi_circuit_job_settings.py
index 5a35f6e..c3c3479 100644
--- a/ionq_core/models/json_multi_circuit_job_settings.py
+++ b/ionq_core/models/json_multi_circuit_job_settings.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/json_multi_circuit_job_settings_compilation.py b/ionq_core/models/json_multi_circuit_job_settings_compilation.py
index db79c8b..ca7c784 100644
--- a/ionq_core/models/json_multi_circuit_job_settings_compilation.py
+++ b/ionq_core/models/json_multi_circuit_job_settings_compilation.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/json_multi_circuit_job_settings_error_mitigation.py b/ionq_core/models/json_multi_circuit_job_settings_error_mitigation.py
index 37a2a16..426c0c2 100644
--- a/ionq_core/models/json_multi_circuit_job_settings_error_mitigation.py
+++ b/ionq_core/models/json_multi_circuit_job_settings_error_mitigation.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/json_multi_circuit_job_type.py b/ionq_core/models/json_multi_circuit_job_type.py
index be34d08..7ab2d5b 100644
--- a/ionq_core/models/json_multi_circuit_job_type.py
+++ b/ionq_core/models/json_multi_circuit_job_type.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 JSONMultiCircuitJobType = Literal['ionq.multi-circuit.v1']
diff --git a/ionq_core/models/json_object.py b/ionq_core/models/json_object.py
index b0df3c9..ffd0e1e 100644
--- a/ionq_core/models/json_object.py
+++ b/ionq_core/models/json_object.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/linear_constraint.py b/ionq_core/models/linear_constraint.py
index 22999f2..7c998cf 100644
--- a/ionq_core/models/linear_constraint.py
+++ b/ionq_core/models/linear_constraint.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/modality.py b/ionq_core/models/modality.py
index b2afbff..2cc1322 100644
--- a/ionq_core/models/modality.py
+++ b/ionq_core/models/modality.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 Modality = Literal['daily', 'monthly', 'weekly']
diff --git a/ionq_core/models/native_circuit.py b/ionq_core/models/native_circuit.py
index 7d783ca..03322d6 100644
--- a/ionq_core/models/native_circuit.py
+++ b/ionq_core/models/native_circuit.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/native_circuit_gateset.py b/ionq_core/models/native_circuit_gateset.py
index 1880125..9f2cb41 100644
--- a/ionq_core/models/native_circuit_gateset.py
+++ b/ionq_core/models/native_circuit_gateset.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 NativeCircuitGateset = Literal['native']
diff --git a/ionq_core/models/native_circuit_input.py b/ionq_core/models/native_circuit_input.py
index 23dcb60..cbdf126 100644
--- a/ionq_core/models/native_circuit_input.py
+++ b/ionq_core/models/native_circuit_input.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/native_circuit_input_gateset.py b/ionq_core/models/native_circuit_input_gateset.py
index d520123..b20afa1 100644
--- a/ionq_core/models/native_circuit_input_gateset.py
+++ b/ionq_core/models/native_circuit_input_gateset.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 NativeCircuitInputGateset = Literal['native']
diff --git a/ionq_core/models/native_gate.py b/ionq_core/models/native_gate.py
index 06e71d1..10d10fa 100644
--- a/ionq_core/models/native_gate.py
+++ b/ionq_core/models/native_gate.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 NativeGate = Literal['gpi', 'gpi2', 'ms', 'nop', 'zz']
diff --git a/ionq_core/models/noise.py b/ionq_core/models/noise.py
index a2518ae..2a22158 100644
--- a/ionq_core/models/noise.py
+++ b/ionq_core/models/noise.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/noise_model.py b/ionq_core/models/noise_model.py
index fa45414..8c87085 100644
--- a/ionq_core/models/noise_model.py
+++ b/ionq_core/models/noise_model.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 NoiseModel = Literal['aria-1', 'aria-2', 'forte-1', 'forte-enterprise-1', 'harmony', 'harmony-1', 'harmony-2', 'ideal']
diff --git a/ionq_core/models/number_map.py b/ionq_core/models/number_map.py
index 3e61282..8d35d6e 100644
--- a/ionq_core/models/number_map.py
+++ b/ionq_core/models/number_map.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/qis_circuit.py b/ionq_core/models/qis_circuit.py
index 4967e55..803abaa 100644
--- a/ionq_core/models/qis_circuit.py
+++ b/ionq_core/models/qis_circuit.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/qis_circuit_gateset.py b/ionq_core/models/qis_circuit_gateset.py
index da22171..95b02ff 100644
--- a/ionq_core/models/qis_circuit_gateset.py
+++ b/ionq_core/models/qis_circuit_gateset.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 QISCircuitGateset = Literal['qis']
diff --git a/ionq_core/models/qis_circuit_input.py b/ionq_core/models/qis_circuit_input.py
index dfcf9a1..ec7f424 100644
--- a/ionq_core/models/qis_circuit_input.py
+++ b/ionq_core/models/qis_circuit_input.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/qis_circuit_input_gateset.py b/ionq_core/models/qis_circuit_input_gateset.py
index 5721f60..ebf93e5 100644
--- a/ionq_core/models/qis_circuit_input_gateset.py
+++ b/ionq_core/models/qis_circuit_input_gateset.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 QisCircuitInputGateset = Literal['qis']
diff --git a/ionq_core/models/qis_gate.py b/ionq_core/models/qis_gate.py
index bb44881..8f4837a 100644
--- a/ionq_core/models/qis_gate.py
+++ b/ionq_core/models/qis_gate.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 QisGate = Literal['cnot', 'h', 'not', 'pauliexp', 'rx', 'ry', 'rz', 's', 'si', 'swap', 't', 'ti', 'v', 'vi', 'x', 'xx', 'y', 'yy', 'z', 'zz']
diff --git a/ionq_core/models/quadratic_constraint.py b/ionq_core/models/quadratic_constraint.py
index 9c41d01..ca242ba 100644
--- a/ionq_core/models/quadratic_constraint.py
+++ b/ionq_core/models/quadratic_constraint.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/quantum_function_job_creation_payload.py b/ionq_core/models/quantum_function_job_creation_payload.py
index 69cc3e9..c04571a 100644
--- a/ionq_core/models/quantum_function_job_creation_payload.py
+++ b/ionq_core/models/quantum_function_job_creation_payload.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/quantum_function_job_creation_payload_settings.py b/ionq_core/models/quantum_function_job_creation_payload_settings.py
index 393bbe7..8c39398 100644
--- a/ionq_core/models/quantum_function_job_creation_payload_settings.py
+++ b/ionq_core/models/quantum_function_job_creation_payload_settings.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/quantum_function_job_creation_payload_settings_error_mitigation.py b/ionq_core/models/quantum_function_job_creation_payload_settings_error_mitigation.py
index a8d89ff..fb5d4de 100644
--- a/ionq_core/models/quantum_function_job_creation_payload_settings_error_mitigation.py
+++ b/ionq_core/models/quantum_function_job_creation_payload_settings_error_mitigation.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/quantum_function_job_creation_payload_type.py b/ionq_core/models/quantum_function_job_creation_payload_type.py
index 86aee1f..42fb0b0 100644
--- a/ionq_core/models/quantum_function_job_creation_payload_type.py
+++ b/ionq_core/models/quantum_function_job_creation_payload_type.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 QuantumFunctionJobCreationPayloadType = Literal['quantum-function']
diff --git a/ionq_core/models/registers.py b/ionq_core/models/registers.py
index 424eb33..458873c 100644
--- a/ionq_core/models/registers.py
+++ b/ionq_core/models/registers.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/request_validation.py b/ionq_core/models/request_validation.py
index e5b8b1c..a11a8ac 100644
--- a/ionq_core/models/request_validation.py
+++ b/ionq_core/models/request_validation.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/session.py b/ionq_core/models/session.py
index c1cf130..14324ff 100644
--- a/ionq_core/models/session.py
+++ b/ionq_core/models/session.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/session_cost_limit.py b/ionq_core/models/session_cost_limit.py
index 0d10e3e..b93fe4f 100644
--- a/ionq_core/models/session_cost_limit.py
+++ b/ionq_core/models/session_cost_limit.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/session_settings.py b/ionq_core/models/session_settings.py
index ceb950a..52ab58e 100644
--- a/ionq_core/models/session_settings.py
+++ b/ionq_core/models/session_settings.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/session_settings_request.py b/ionq_core/models/session_settings_request.py
index 9b2a919..f9247e5 100644
--- a/ionq_core/models/session_settings_request.py
+++ b/ionq_core/models/session_settings_request.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/session_status_enum.py b/ionq_core/models/session_status_enum.py
index 309276a..6a2f5f8 100644
--- a/ionq_core/models/session_status_enum.py
+++ b/ionq_core/models/session_status_enum.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Literal, cast
 
 SessionStatusEnum = Literal['created', 'ended', 'started']
diff --git a/ionq_core/models/sessions_response.py b/ionq_core/models/sessions_response.py
index e42de81..acb17b3 100644
--- a/ionq_core/models/sessions_response.py
+++ b/ionq_core/models/sessions_response.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/usage.py b/ionq_core/models/usage.py
index e97837c..462697c 100644
--- a/ionq_core/models/usage.py
+++ b/ionq_core/models/usage.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/usages.py b/ionq_core/models/usages.py
index 2f3a153..e263929 100644
--- a/ionq_core/models/usages.py
+++ b/ionq_core/models/usages.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/models/whoami.py b/ionq_core/models/whoami.py
index 3358abe..dd1acba 100644
--- a/ionq_core/models/whoami.py
+++ b/ionq_core/models/whoami.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from collections.abc import Mapping
diff --git a/ionq_core/types.py b/ionq_core/types.py
index f74db0a..484d085 100644
--- a/ionq_core/types.py
+++ b/ionq_core/types.py
@@ -1,3 +1,6 @@
+# Copyright 2026 IonQ, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 """ Contains some shared types for properties """
 
 from collections.abc import Mapping, MutableMapping

From 94281ff9896ba97f9f2cb34f7f8e881dfe3e7ff3 Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 12:31:41 -0700
Subject: [PATCH 08/11] Make copyright post-hook idempotent

Skip files that already start with '# Copyright' so the hook
does not duplicate headers on handwritten files that the generator
leaves untouched.
---
 openapi-python-client-config.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openapi-python-client-config.yaml b/openapi-python-client-config.yaml
index cc90cbd..430cefb 100644
--- a/openapi-python-client-config.yaml
+++ b/openapi-python-client-config.yaml
@@ -4,7 +4,7 @@ literal_enums: true
 
 post_hooks:
   - "perl -pi -e 's/token: str\\K$/ = field(repr=False)/' client.py"
-  - "perl -pi -e 'print \"# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n\" if !$s{$ARGV}++' $(find . -name '*.py')"
+  - "perl -pi -e 'print \"# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n\" if !$s{$ARGV}++ && !/^# Copyright/' $(find . -name '*.py')"
   - "ruff check . --fix-only"
   - "ruff format ."
 

From 4b8d3ffbbca123ca9e117c5e462b5445bd874401 Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Fri, 24 Apr 2026 12:33:24 -0700
Subject: [PATCH 09/11] Simplify copyright post-hook with perl slurp mode

Use -0777 slurp mode with a single substitution instead of
line-by-line processing with a per-file hash tracker.
---
 openapi-python-client-config.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openapi-python-client-config.yaml b/openapi-python-client-config.yaml
index 430cefb..f5cd209 100644
--- a/openapi-python-client-config.yaml
+++ b/openapi-python-client-config.yaml
@@ -4,7 +4,7 @@ literal_enums: true
 
 post_hooks:
   - "perl -pi -e 's/token: str\\K$/ = field(repr=False)/' client.py"
-  - "perl -pi -e 'print \"# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n\" if !$s{$ARGV}++ && !/^# Copyright/' $(find . -name '*.py')"
+  - "perl -0777 -pi -e 's/\\A(?!# Copyright)/# Copyright 2026 IonQ, Inc.\\n# SPDX-License-Identifier: Apache-2.0\\n\\n/' $(find . -name '*.py')"
   - "ruff check . --fix-only"
   - "ruff format ."
 

From 5150eec4dcbc90a655e92962493b76b8124293f1 Mon Sep 17 00:00:00 2001
From: Guen Prawiroatmodjo <4041805+guenp@users.noreply.github.com>
Date: Fri, 24 Apr 2026 15:24:18 -0700
Subject: [PATCH 10/11] Remove package documentation from package_init template

Removed detailed package documentation and examples from the Jinja template.
---
 custom-templates/package_init.py.jinja | 130 +------------------------
 1 file changed, 1 insertion(+), 129 deletions(-)

diff --git a/custom-templates/package_init.py.jinja b/custom-templates/package_init.py.jinja
index 8e3bcbf..57227d4 100644
--- a/custom-templates/package_init.py.jinja
+++ b/custom-templates/package_init.py.jinja
@@ -2,132 +2,4 @@
 # Copyright 2026 IonQ, Inc.
 # SPDX-License-Identifier: Apache-2.0
 
-"""A Python client library for the [IonQ Cloud Platform API](https://docs.ionq.com/).
-
-Provides full access to IonQ's quantum computing services with typed models for all
-request and response objects. Supports both synchronous and asynchronous usage.
-
-## Quick start
-
-```python
-from ionq_core import IonQClient
-from ionq_core.api.backends import get_backends
-
-# Authenticate with the IONQ_API_KEY environment variable
-client = IonQClient()
-
-# List available quantum backends
-for backend in get_backends.sync(client=client):
-    print(f"{backend.backend}: {backend.status}")
-```
-
-## Authentication
-
-Get an API key from the [IonQ Cloud Console](https://cloud.ionq.com), then
-either set the ``IONQ_API_KEY`` environment variable or pass it directly:
-
-```python
-client = IonQClient()                       # reads IONQ_API_KEY
-client = IonQClient(api_key="your-key")     # explicit key
-```
-
-## Submitting a job
-
-```python
-from ionq_core.api.default import create_job
-from ionq_core.models.circuit_job_creation_payload import CircuitJobCreationPayload
-
-job = create_job.sync(
-    client=client,
-    body=CircuitJobCreationPayload.from_dict({
-        "type": "ionq.circuit.v1",
-        "backend": "simulator",
-        "shots": 1000,
-        "input": {
-            "gateset": "qis",
-            "circuit": [
-                {"gate": "h", "targets": [0]},
-                {"gate": "cnot", "targets": [0], "controls": [1]},
-            ],
-        },
-    }),
-)
-```
-
-## Key features
-
-- **Sync and async** - every endpoint has ``.sync()`` and ``.asyncio()`` variants.
-- **Automatic retries** - transient errors (429, 5xx) are retried with exponential
-  backoff. See `IonQClient` for configuration.
-- **Typed exceptions** - HTTP errors are raised as `AuthenticationError`,
-  `RateLimitError`, `ServerError`, etc. See `_exceptions` for the full hierarchy.
-- **Pagination helpers** - `iter_jobs` and `aiter_jobs` follow cursors automatically.
-- **Job polling** - `wait_for_job` and `async_wait_for_job` poll until completion.
-- **Session management** - `SessionManager` wraps the session lifecycle as a
-  context manager.
-- **Native gate matrices** - `gpi_matrix`, `gpi2_matrix`, `ms_matrix`, and
-  `zz_matrix` return pure-Python unitary matrices for simulation and verification.
-- **Extensibility** - `ClientExtension` lets downstream SDKs inject hooks, headers,
-  custom transports, and error mappers without modifying this library.
-"""
-
-from ._exceptions import (
-    APIConnectionError,
-    APIError,
-    APITimeoutError,
-    AuthenticationError,
-    BadRequestError,
-    IonQError,
-    NotFoundError,
-    PermissionDeniedError,
-    RateLimitError,
-    ServerError,
-)
-from ._extensions import AsyncEventHook, ClientExtension, EventHook
-from ._gates import gpi2_matrix, gpi_matrix, ms_matrix, zz_matrix
-from ._pagination import aiter_jobs, aiter_session_jobs, iter_jobs, iter_session_jobs
-from ._polling import (
-    JobFailedError,
-    JobTimeoutError,
-    async_wait_for_job,
-    wait_for_job,
-)
-from ._session import SessionManager
-from .client import AuthenticatedClient, Client
-from .ionq_client import IonQClient, __version__
-from .types import UNSET, Unset
-
-__all__ = (
-    "UNSET",
-    "APIConnectionError",
-    "APIError",
-    "APITimeoutError",
-    "AsyncEventHook",
-    "AuthenticatedClient",
-    "AuthenticationError",
-    "BadRequestError",
-    "Client",
-    "ClientExtension",
-    "EventHook",
-    "IonQClient",
-    "IonQError",
-    "JobFailedError",
-    "JobTimeoutError",
-    "NotFoundError",
-    "PermissionDeniedError",
-    "RateLimitError",
-    "ServerError",
-    "SessionManager",
-    "Unset",
-    "__version__",
-    "aiter_jobs",
-    "aiter_session_jobs",
-    "async_wait_for_job",
-    "gpi2_matrix",
-    "gpi_matrix",
-    "iter_jobs",
-    "iter_session_jobs",
-    "ms_matrix",
-    "wait_for_job",
-    "zz_matrix",
-)
+{{ safe_docstring(package_description) }}

From ae88c49eaf4a6771e099b9f9d65e32f86c3283b2 Mon Sep 17 00:00:00 2001
From: Spencer Churchill <25377399+splch@users.noreply.github.com>
Date: Sun, 26 Apr 2026 07:19:03 -0700
Subject: [PATCH 11/11] Fix merge conflict: restore imports in template, remove
 copyright

The merge from main lost the imports and __all__ from the
package_init template and re-introduced the copyright header
that the post-hook now handles.
---
 custom-templates/package_init.py.jinja | 63 +++++++++++++++++++++--
 ionq_core/__init__.py                  | 71 +-------------------------
 2 files changed, 61 insertions(+), 73 deletions(-)

diff --git a/custom-templates/package_init.py.jinja b/custom-templates/package_init.py.jinja
index 57227d4..c602cf0 100644
--- a/custom-templates/package_init.py.jinja
+++ b/custom-templates/package_init.py.jinja
@@ -1,5 +1,62 @@
 {% from "helpers.jinja" import safe_docstring %}
-# Copyright 2026 IonQ, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
 {{ safe_docstring(package_description) }}
+from ._exceptions import (
+    APIConnectionError,
+    APIError,
+    APITimeoutError,
+    AuthenticationError,
+    BadRequestError,
+    IonQError,
+    NotFoundError,
+    PermissionDeniedError,
+    RateLimitError,
+    ServerError,
+)
+from ._extensions import AsyncEventHook, ClientExtension, EventHook
+from ._gates import gpi2_matrix, gpi_matrix, ms_matrix, zz_matrix
+from ._pagination import aiter_jobs, aiter_session_jobs, iter_jobs, iter_session_jobs
+from ._polling import (
+    JobFailedError,
+    JobTimeoutError,
+    async_wait_for_job,
+    wait_for_job,
+)
+from ._session import SessionManager
+from .client import AuthenticatedClient, Client
+from .ionq_client import IonQClient, __version__
+from .types import UNSET, Unset
+
+__all__ = (
+    "UNSET",
+    "APIConnectionError",
+    "APIError",
+    "APITimeoutError",
+    "AsyncEventHook",
+    "AuthenticatedClient",
+    "AuthenticationError",
+    "BadRequestError",
+    "Client",
+    "ClientExtension",
+    "EventHook",
+    "IonQClient",
+    "IonQError",
+    "JobFailedError",
+    "JobTimeoutError",
+    "NotFoundError",
+    "PermissionDeniedError",
+    "RateLimitError",
+    "ServerError",
+    "SessionManager",
+    "Unset",
+    "__version__",
+    "aiter_jobs",
+    "aiter_session_jobs",
+    "async_wait_for_job",
+    "gpi2_matrix",
+    "gpi_matrix",
+    "iter_jobs",
+    "iter_session_jobs",
+    "ms_matrix",
+    "wait_for_job",
+    "zz_matrix",
+)
diff --git a/ionq_core/__init__.py b/ionq_core/__init__.py
index f84d0bc..fbee532 100644
--- a/ionq_core/__init__.py
+++ b/ionq_core/__init__.py
@@ -1,76 +1,7 @@
 # Copyright 2026 IonQ, Inc.
 # SPDX-License-Identifier: Apache-2.0
 
-"""A Python client library for the [IonQ Cloud Platform API](https://docs.ionq.com/).
-
-Provides full access to IonQ's quantum computing services with typed models for all
-request and response objects. Supports both synchronous and asynchronous usage.
-
-## Quick start
-
-```python
-from ionq_core import IonQClient
-from ionq_core.api.backends import get_backends
-
-# Authenticate with the IONQ_API_KEY environment variable
-client = IonQClient()
-
-# List available quantum backends
-for backend in get_backends.sync(client=client):
-    print(f"{backend.backend}: {backend.status}")
-```
-
-## Authentication
-
-Get an API key from the [IonQ Cloud Console](https://cloud.ionq.com), then
-either set the ``IONQ_API_KEY`` environment variable or pass it directly:
-
-```python
-client = IonQClient()  # reads IONQ_API_KEY
-client = IonQClient(api_key="your-key")  # explicit key
-```
-
-## Submitting a job
-
-```python
-from ionq_core.api.default import create_job
-from ionq_core.models.circuit_job_creation_payload import CircuitJobCreationPayload
-
-job = create_job.sync(
-    client=client,
-    body=CircuitJobCreationPayload.from_dict(
-        {
-            "type": "ionq.circuit.v1",
-            "backend": "simulator",
-            "shots": 1000,
-            "input": {
-                "gateset": "qis",
-                "circuit": [
-                    {"gate": "h", "targets": [0]},
-                    {"gate": "cnot", "targets": [0], "controls": [1]},
-                ],
-            },
-        }
-    ),
-)
-```
-
-## Key features
-
-- **Sync and async** - every endpoint has ``.sync()`` and ``.asyncio()`` variants.
-- **Automatic retries** - transient errors (429, 5xx) are retried with exponential
-  backoff. See `IonQClient` for configuration.
-- **Typed exceptions** - HTTP errors are raised as `AuthenticationError`,
-  `RateLimitError`, `ServerError`, etc. See `_exceptions` for the full hierarchy.
-- **Pagination helpers** - `iter_jobs` and `aiter_jobs` follow cursors automatically.
-- **Job polling** - `wait_for_job` and `async_wait_for_job` poll until completion.
-- **Session management** - `SessionManager` wraps the session lifecycle as a
-  context manager.
-- **Native gate matrices** - `gpi_matrix`, `gpi2_matrix`, `ms_matrix`, and
-  `zz_matrix` return pure-Python unitary matrices for simulation and verification.
-- **Extensibility** - `ClientExtension` lets downstream SDKs inject hooks, headers,
-  custom transports, and error mappers without modifying this library.
-"""
+"""A client library for accessing IonQ Cloud Platform API"""
 
 from ._exceptions import (
     APIConnectionError,