v4.20.10 v4.20.11

Name: fastmcp
Author: punkpeye

punkpeye/fastmcpSep 11, 2026 → Sep 11, 20260 days between releases

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Analyzing what changed between v4.20.10 and v4.20.11. This page updates automatically — usually within a minute.

The Two Releases

v4.20.10

Sep 11, 2026· 1 month ago

This release addresses a bug where tool capabilities were incorrectly hidden and enables the documented ping default for HTTP streaming connections.

Full release notes

v4.20.11

Sep 11, 2026· 1 month ago

This release fixes a bug where additional properties in tool output schemas were not being preserved correctly. It serves as a maintenance update to ensure data integrity and proper schema handling for MCP tools.

Full release notes