metaengine-openapi-fastapi 1.0.0

Generate idiomatic Python (Pydantic v2 + httpx) clients and models from OpenAPI specifications. Self-contained — no .NET install required.

metaengine-openapi-fastapi

Generate idiomatic Python clients and models from an OpenAPI specification — Pydantic v2 models and an async httpx client, with optional docstrings, validation, and camelCase field aliases.

Powered by MetaEngine. The wheel is self-contained: it bundles a platform-native runner, so no .NET installation is required.

Install

pip install metaengine-openapi-fastapi

Usage

metaengine-openapi-fastapi <input> <output> [options]

Argument / Option	Description
input	OpenAPI specification file path or URL
output	Output directory for generated Python files
--include-tags <tags>	Only generate operations with these tags (comma-separated)
--service-suffix <name>	Service naming suffix (default: Service)
--options-threshold <n>	Parameter count at which a method switches to an options object (default: 4)
--camel-case-aliases	Generate camelCase field aliases for Pydantic models
--documentation	Generate docstring comments
--strict-validation	Enable strict OpenAPI validation
--verbose	Enable verbose logging

Example

metaengine-openapi-fastapi ./petstore.json ./generated --camel-case-aliases --documentation

Supported platforms

Pre-built wheels are published for Linux (x86_64, aarch64), macOS (Apple Silicon + Intel), and Windows (x64).

License

MIT