releases

pez 2026-03-23T13:15:59.298529Z

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pez 2026-03-23T13:16:11.954479Z

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Shantanu Kumar 2026-03-23T14:42:53.919239Z

PluMCP: Clojure/ClojureScript library for building https://modelcontextprotocol.io/ Clients and Servers Version 0.2.0-beta5 is released to Clojars. This release fixes MCP client HTTP transport issues and addresses usability/issues in client/server "request cancellation". • Repo: https://github.com/plumce/plumcp • Changelog:

- Added
  - Client/Server "Request Cancellation" support functions
    - `cancel-sent-request`
    - `cancel-request-received?`
  - Sampling entity generator fns
    - `make-sampling-text-message`
    - `make-sampling-text-message-request`
    - `make-sampling-text-message-result`
  - Roundtrip tests
    - test-client-request-cancellation
    - test-server-request-cancellation
- Changed
  - Client HTTP transport:
  - Treat all non-200 responses as errors, not just 400/404/500
    - JSON-RPC errors have `:plumcp.core/http-status` placed under `:error`
    - Remove support for redundant `:on-other-response` option kwarg
  - Gracefully handle server not supporting GET (stream)
    - Retry fetching GET-stream (only once) after JVM/IOException
- Fixed
  - Request cancellation for both client and server
Please share your feedback/questions/followup in #plumcp or in thread.

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