Initial open source release

Rust code generator for strongly-typed structs, HTTP clients, and SSE streaming
clients from OpenAPI 3.1 specifications. Originally built internally at GPU CLI
for generating typed Rust clients for OpenAI, Anthropic, and other APIs.

- Full OpenAPI 3.1 support (objects, arrays, enums, oneOf, anyOf, allOf, discriminators)
- HTTP client generation with retry, tracing, and auth middleware
- SSE streaming client generation with reconnection
- TOML configuration and CLI binary (openapi-gen)
- 156 tests, zero unwrap() in production code, clippy clean

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: lightsofapollo

.github/workflows/ci.yml

@@ -0,0 +1,48 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo test --all-features
+
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo clippy --all-features -- -D warnings
+
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - run: cargo fmt --check
+
+  doc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo doc --no-deps --all-features
+        env:
+          RUSTDOCFLAGS: -D warnings

.gitignore

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+/target
+Cargo.lock
+*.swp
+*.swo
+*~
+.DS_Store

Cargo.toml

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+[package]
+name = "openapi-generator"
+version = "0.1.0"
+edition = "2024"
+rust-version = "1.85.0"
+authors = ["James Lalonde"]
+license = "MIT"
+description = "Generate strongly-typed Rust structs, HTTP clients, and SSE streaming clients from OpenAPI 3.1 specifications"
+repository = "https://github.com/jameslal/openapi-generator"
+keywords = ["openapi", "codegen", "rust", "sse", "api-client"]
+categories = ["development-tools", "web-programming"]
+readme = "README.md"
+
+[dependencies]
+clap = { version = "4.5", features = ["derive"] }
+once_cell = "1.19"
+prettyplease = "0.2"
+proc-macro2 = "1.0"
+quote = "1.0"
+reqwest = { version = "0.11", features = ["json", "blocking", "stream"] }
+reqwest-middleware = "0.4"
+reqwest-retry = "0.7"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+serde_yaml = "0.9"
+syn = { version = "2.0", features = ["parsing"] }
+thiserror = "1.0"
+tokio = { version = "1.0", features = ["full"] }
+tempfile = "3.0"
+insta = { version = "1.41", features = ["yaml"] }
+url = "2.5"
+toml = "0.8"
+validator = { version = "0.20", features = ["derive"] }
+specta = { version = "2.0.0-rc", features = ["derive"], optional = true }
+heck = "0.5"
+
+[dev-dependencies]
+serde_yaml = "0.9"
+insta = { version = "1.41", features = ["yaml"] }
+
+[features]
+specta = ["dep:specta"]
+
+[[bin]]
+name = "openapi-gen"
+path = "src/bin/openapi-gen.rs"
+
+[lints.clippy]
+unwrap_used = "deny"
+expect_used = "warn"

LICENSE

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+MIT License
+
+Copyright (c) 2025 James Lalonde
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.