v4.20.15

Name: twenty
Author: twentyhq

twentyhq/twentyv4.20.15Sep 21, 2026by github-actions[bot]

Upgrading?

What changed from v0.16.30 → v4.20.15?What's new in v4.20.16 after v4.20.15?

AI Summary

Addresses stability issues by fixing tool invocation errors, logging failures, and OpenAPI JSON handling to prevent server crashes.

Key Highlights

Fixed tools/call requests without arguments
Improved logging error handling
Fixed OpenAPI empty property bodies

New Features

Accept tools/call requests without arguments
Improved logging error handling
Preserve JSON dictionary bodies with empty properties

Full Release Notes

## [4.20.15](https://github.com/punkpeye/fastmcp/compare/v4.20.14...v4.20.15) (2026-09-21)


### Bug Fixes

* accept a tools/call that omits params.arguments ([#383](https://github.com/punkpeye/fastmcp/issues/383)) ([e7e4520](https://github.com/punkpeye/fastmcp/commit/e7e45208d339101d8cf0eb39323fb3de56dbd960))
* catch failed log notifications instead of crashing the server ([#382](https://github.com/punkpeye/fastmcp/issues/382)) ([c15e194](https://github.com/punkpeye/fastmcp/commit/c15e194eab508e798cc43ca4e8c8cb66d3c29445))
* **openapi:** preserve JSON dictionary bodies with empty properties ([#381](https://github.com/punkpeye/fastmcp/issues/381)) ([d9edf6c](https://github.com/punkpeye/fastmcp/commit/d9edf6cb5befd49e65723b860fb5418cfb0c3c06))

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