v4.23.5

Name: fastmcp
Author: punkpeye

punkpeye/fastmcpv4.23.5Oct 20, 2026by github-actions[bot]

Upgrading?

AI Summary

This release focuses on stabilizing tool interactions by fixing how annotations and metadata are handled in tool results, as well as ensuring Zod 3 schemas remain intact in edge environments.

Key Highlights

Fixed acceptance of annotations and _meta on tool result content
Preserved Zod 3 tool parameter schemas in edge scenarios
Resolved issue #451 regarding tool result content
Resolved issue #452 regarding Zod schema compatibility

Full Release Notes

## [4.23.5](https://github.com/punkpeye/fastmcp/compare/v4.23.4...v4.23.5) (2026-10-20)


### Bug Fixes

* accept annotations and _meta on tool result content ([#451](https://github.com/punkpeye/fastmcp/issues/451)) ([4914feb](https://github.com/punkpeye/fastmcp/commit/4914feb9916d77e9d5eec8f8d88f9485c37792bf))
* **edge:** preserve Zod 3 tool parameter schemas ([#452](https://github.com/punkpeye/fastmcp/issues/452)) ([633e24f](https://github.com/punkpeye/fastmcp/commit/633e24ffeb4cdadaca661d9539bbc84c9367f29e))

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