v4.23.4

Name: fastmcp
Author: punkpeye

punkpeye/fastmcpv4.23.4Oct 20, 2026by github-actions[bot]

Upgrading?

What changed from v4.23.3 → v4.23.4?What's new in v4.23.5 after v4.23.4?

AI Summary

This release focuses on bug fixes in the Edge and OpenAPI modules to ensure data integrity. It addresses specific issues regarding tool result fields and server variable defaults to improve the reliability of tool execution and API generation.

Key Highlights

Preserved explicit tool result fields in the Edge module
Preserved literal server variable defaults in OpenAPI generation
Improved data integrity for MCP tool execution

Full Release Notes

## [4.23.4](https://github.com/punkpeye/fastmcp/compare/v4.23.3...v4.23.4) (2026-10-20)


### Bug Fixes

* **edge:** preserve explicit tool result fields ([#445](https://github.com/punkpeye/fastmcp/issues/445)) ([93c1a2b](https://github.com/punkpeye/fastmcp/commit/93c1a2bdb2cfbabb242805e5c1ab02cf5d10f91f))
* **openapi:** preserve literal server variable defaults ([#448](https://github.com/punkpeye/fastmcp/issues/448)) ([7402a96](https://github.com/punkpeye/fastmcp/commit/7402a96d36b3afb3ea9b2a4d5e89dd83a8f1e410))

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