v0.16.31 v4.22.1
low risk
vadimdemedes/inkSep 28, 2026 → Sep 30, 20262 days between releases
What's New
Newer release fixes protocol compliance and OpenAPI handling; older release added DeleteMessage gRPC RPC.
Improvements
- Improved protocol compliance during initialization
- Corrected OpenAPI parameter mapping for GET requests
- Enhanced error reporting for unavailable tools
Bug Fixes
- Answer -32602 for an unknown tool or resource
- Initialize with the client's protocol version
- Keep GETs with referenced array parameters as tools
Upgrade Notes
The provided release notes are for different repositories (Conduit and fastmcp) and are unrelated. No upgrade path exists between them.
The Two Releases
v0.16.31
v0.16.31
Sep 28, 2026· 24 days ago
Adds a new DeleteMessage gRPC RPC to the chat feature.
Full release notesv4.22.1
v4.22.1
Sep 30, 2026· 22 days ago
A patch release for fastmcp fixing protocol initialization, OpenAPI parameter handling, and error responses for unknown tools or resources.
Full release notes