v4.22.9 v4.22.8
punkpeye/fastmcpOct 14, 2026 → Oct 14, 20260 days between releases
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Analyzing what changed between v4.22.9 and v4.22.8. This page updates automatically — usually within a minute.
The Two Releases
v4.22.9
v4.22.9
Oct 14, 2026· 7 days ago
Improves CLI robustness by validating arguments and rejecting unknown commands/options, alongside better session ping management.
Full release notesv4.22.8
v4.22.8
Oct 14, 2026· 7 days ago
Corrects JSON-RPC error responses for malformed URIs and missing arguments, and enhances OpenAPI media type recognition.
Full release notes