mcepl
57cab0b321
- [v1.x] Buffer per-request StreamableHTTP streams; store
priming event before dispatch by @maxisbey in #2948
- [v1.x] Set Development Status classifier to Production/Stable
by @maxisbey in #2976
- [v1.x] Support TransportSecuritySettings in the WebSocket
server transport by @maxisbey in #2992
Update to 1.28.0:
- Deprecations
- Two API surfaces now emit DeprecationWarning ahead of their
removal in v2. Nothing is removed in 1.x, and the warnings
fire only when the deprecated API is called - importing the
modules stays silent.
- WebSocket transport - mcp.client.websocket.websocket_client
and mcp.server.websocket.websocket_server. WebSocket was
never part of the MCP specification; use the streamable
HTTP transport instead. The TypeScript SDK has likewise
removed its WebSocket client for v2
(modelcontextprotocol/typescript-sdk#1783).
- Experimental tasks API - ClientSession.experimental,
Server.experimental, ServerSession.experimental, and the
experimental_task_handlers= kwarg on ClientSession. Tasks
(SEP-1686) were removed from the MCP specification and are
expected to return as a separate MCP extension.
- If your test suite runs with filterwarnings = ["error"] and
exercises these paths, add a scoped ignore such as ignore:The
experimental tasks API is deprecated:DeprecationWarning or
ignore:The WebSocket .* transport is
deprecated:DeprecationWarning.
- See #2828 for full details.
- What's Changed
- [v1.x] Support Python 3.14 by @maxisbey in #2769
- fix: omit null optional fields from task result payloads by
@liuzemei in #2809
- [v1.x] Deprecate the WebSocket transport and the
experimental tasks entry points by @maxisbey in #2828
- [v1.x] Add a v2 status banner to the README by @maxisbey in
#2835
- [v1.x] Deflake the child process cleanup tests by @maxisbey
in #2839