v4.21.2 v31.5.3
punkpeye/fastmcpSep 25, 2026 → Sep 25, 20260 days between releases
AI comparison unavailable for this pair right now — see the full release notes below for what each version contains.
The Two Releases
v4.21.2
v4.21.2
Sep 25, 2026· 27 days ago
Focuses on refining tool input schemas and error handling. It fixes errors for unknown resources, ensures free-form arguments are handled correctly, and improves security by hiding unauthorized tools.
Full release notes