v4.20.0

hexgrad/kokorov4.20.0Sep 4, 2026by github-actions[bot]

AI Summary

Connects OpenAPI output schema and content structures with request serialization styles to improve the integration between the API definitions and the underlying request handling.

Key Highlights

Wires outputSchema and structuredContent with query/body serialization styles
Enhanced OpenAPI integration
Improved schema serialization

New Features

Wire outputSchema/structuredContent and query/body serialization styles

Full Release Notes

# [4.20.0](https://github.com/punkpeye/fastmcp/compare/v4.19.1...v4.20.0) (2026-09-04)


### Features

* **openapi:** wire outputSchema/structuredContent and query/body serialization styles ([#351](https://github.com/punkpeye/fastmcp/issues/351)) ([10b08f7](https://github.com/punkpeye/fastmcp/commit/10b08f7c6975ace9fcff1c24c5db815cc2f7565e))