chore(main): release 1.0.0 (#590)

🤖 I have created a release *beep* *boop*
---


##
[1.0.0](v1.0.0-beta.0...v1.0.0)
(2026-07-22)

`@a2a-js/sdk` is now generally available. This release promotes the v1.0
line to stable, implementing the full [A2A Protocol Specification
v1.0](https://a2a-protocol.org/v1.0.0/specification/) across all three
transports (JSON-RPC, HTTP+JSON/REST, gRPC), with opt-in v0.3 backward
compatibility for staged migrations.

Upgrading from `0.3.x`? See the [v0.3 → v1.0 migration
guide](https://github.com/a2aproject/a2a-js/blob/v1.0.0/docs/migration-guide.md).
Interoperating with peers still on v0.3? See the [end-user v0.3
compatibility
guide](https://github.com/a2aproject/a2a-js/blob/v1.0.0/docs/compatibility-v0_3.md).


### ⚠ BREAKING CHANGES

* unify A2AError hierarchy with transport specific subclasses
([#587](#587))
* **server:** replace individual properties with SendMessageRequest in
RequestContext ([#581](#581))

### Features

* add state bag and ServerCallContextBuilder to ServerCallContext
([#364](#364))
([477e394](477e394))
* export SSE wire-format helpers from public entry point
([#548](#548))
([8bc21f5](8bc21f5)),
closes [#547](#547)
* **server:** expose SendMessageRequest metadata to AgentExecutor via
RequestContext ([#564](#564))
([a92f54e](a92f54e))
* **server:** replace individual properties with SendMessageRequest in
RequestContext ([#581](#581))
([7cd30de](7cd30de))
* unify A2AError hierarchy with transport specific subclasses
([#587](#587))
([4806f8f](4806f8f))


### Bug Fixes

* **client:** bound SSE event size to prevent client-side memory
exhaustion ([#582](#582))
([e6e8ce9](e6e8ce9))
* **client:** cancel the SSE stream on teardown to avoid leaking
connections ([#580](#580))
([83269a5](83269a5))
* **grpc:** preserve null values in protobuf Struct
([#578](#578))
([f447e4e](f447e4e)),
closes [#576](#576)
* resolve sdk compatibility bugs
([#568](#568))
([b57f026](b57f026))
* **server:** await _handleProcessingError so blocking drains surface
errors ([#579](#579))
([5833652](5833652))
* support GET for resubscribe route
([#569](#569))
([8dd43d1](8dd43d1))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

---------

Co-authored-by: JakubWorek <jakubworek@google.com>

Author: a2a-bot

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.0.0-beta.0"
+  ".": "1.0.0"
 }

CHANGELOG.md

@@ -1,5 +1,39 @@
 # Changelog
 
+## [1.0.0](https://github.com/a2aproject/a2a-js/compare/v1.0.0-beta.0...v1.0.0) (2026-07-22)
+
+`@a2a-js/sdk` is now generally available. This release promotes the v1.0 line to stable, implementing the full [A2A Protocol Specification v1.0](https://a2a-protocol.org/v1.0.0/specification/) across all three transports (JSON-RPC, HTTP+JSON/REST, gRPC), with opt-in v0.3 backward compatibility for staged migrations.
+
+Upgrading from `0.3.x`? See the [v0.3 → v1.0 migration guide](https://github.com/a2aproject/a2a-js/blob/v1.0.0/docs/migration-guide.md).
+Interoperating with peers still on v0.3? See the [end-user v0.3 compatibility guide](https://github.com/a2aproject/a2a-js/blob/v1.0.0/docs/compatibility-v0_3.md).
+
+Changes below cover what landed since `v1.0.0-beta.0` — for the complete v0.3 → v1.0 delta, see the [`1.0.0-beta.0`](#100-beta0-2026-07-01) and [`1.0.0-alpha.0`](#100-alpha0-2026-05-11) entries below.
+
+
+### ⚠ BREAKING CHANGES
+
+* unify A2AError hierarchy with transport specific subclasses ([#587](https://github.com/a2aproject/a2a-js/issues/587))
+* **server:** replace individual properties with SendMessageRequest in RequestContext ([#581](https://github.com/a2aproject/a2a-js/issues/581))
+
+### Features
+
+* add state bag and ServerCallContextBuilder to ServerCallContext ([#364](https://github.com/a2aproject/a2a-js/issues/364)) ([477e394](https://github.com/a2aproject/a2a-js/commit/477e394981a92a118f3a738a0401fc45193612da))
+* export SSE wire-format helpers from public entry point ([#548](https://github.com/a2aproject/a2a-js/issues/548)) ([8bc21f5](https://github.com/a2aproject/a2a-js/commit/8bc21f5697f4b3ea31a1788747db418e6619809f)), closes [#547](https://github.com/a2aproject/a2a-js/issues/547)
+* **server:** expose SendMessageRequest metadata to AgentExecutor via RequestContext ([#564](https://github.com/a2aproject/a2a-js/issues/564)) ([a92f54e](https://github.com/a2aproject/a2a-js/commit/a92f54ec6ea5aa0c3d13891fd4ad110e97b07e93))
+* **server:** replace individual properties with SendMessageRequest in RequestContext ([#581](https://github.com/a2aproject/a2a-js/issues/581)) ([7cd30de](https://github.com/a2aproject/a2a-js/commit/7cd30dea0082e2d1491f1ec4e037e06b2e408462))
+* unify A2AError hierarchy with transport specific subclasses ([#587](https://github.com/a2aproject/a2a-js/issues/587)) ([4806f8f](https://github.com/a2aproject/a2a-js/commit/4806f8f757c7b945d1d588804cbfe06fc2d30a10))
+
+
+### Bug Fixes
+
+* **client:** bound SSE event size to prevent client-side memory exhaustion ([#582](https://github.com/a2aproject/a2a-js/issues/582)) ([e6e8ce9](https://github.com/a2aproject/a2a-js/commit/e6e8ce9af036f10ca020286fe4bfa649994e7b84))
+* **client:** cancel the SSE stream on teardown to avoid leaking connections ([#580](https://github.com/a2aproject/a2a-js/issues/580)) ([83269a5](https://github.com/a2aproject/a2a-js/commit/83269a5a30f7a4860df80fe12f80d8f2d532e8cf))
+* **grpc:** preserve null values in protobuf Struct ([#578](https://github.com/a2aproject/a2a-js/issues/578)) ([f447e4e](https://github.com/a2aproject/a2a-js/commit/f447e4e72332fd9f5aa32ba3fccd1464d2de4627)), closes [#576](https://github.com/a2aproject/a2a-js/issues/576)
+* resolve sdk compatibility bugs ([#568](https://github.com/a2aproject/a2a-js/issues/568)) ([b57f026](https://github.com/a2aproject/a2a-js/commit/b57f026f82b022eee16bd09907a9ecac0162784f))
+* **server:** await _handleProcessingError so blocking drains surface errors ([#579](https://github.com/a2aproject/a2a-js/issues/579)) ([5833652](https://github.com/a2aproject/a2a-js/commit/5833652fbe4eab1a3d10437b2d6db7b0fe22233f))
+* support GET for resubscribe route ([#569](https://github.com/a2aproject/a2a-js/issues/569)) ([8dd43d1](https://github.com/a2aproject/a2a-js/commit/8dd43d1484bb7bf4dfc786eca1c4ce2d40441d73))
+
+
 ## [1.0.0-beta.0](https://github.com/a2aproject/a2a-js/compare/v1.0.0-alpha.0...v1.0.0-beta.0) (2026-07-01)
 
 The v0.3 backward-compatibility layer is now complete, marking this release as the first one bringing v1.0 and v0.3 support together.

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@a2a-js/sdk",
-  "version": "1.0.0-beta.0",
+  "version": "1.0.0",
   "description": "Server & Client SDK for Agent2Agent protocol",
   "license": "Apache-2.0",
   "repository": {