4.19.1 v4.20.15

Name: fastmcp
Author: punkpeye

punkpeye/fastmcpSep 18, 2026 → Sep 21, 20262 days between releases

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Analyzing what changed between 4.19.1 and v4.20.15. This page updates automatically — usually within a minute.

The Two Releases

4.19.1

Sep 18, 2026· 1 month ago

Minimal release notes: "* Fixed Cannot send Emails in some cases (#3575) * Fixed WOPI apps stopped working (#3577)"

Full release notes

v4.20.15

Sep 21, 2026· 1 month ago

This release improves server stability and robustness by fixing crash scenarios related to logging failures and ensuring proper handling of tools calls with missing arguments.

Full release notes