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GeezerVison is showing github.com — History for docs - modelcontextprotocol/python-sdk

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  1. Commits on Nov 5, 2026

    • Keep unknown keys on client and server capabilities (#3812)

      KludexKludex
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  2. Commits on Oct 27, 2026

    • Carry `capabilities.extensions` on legacy `initialize` handshakes (#3776)

      KludexKludex
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  3. Commits on Oct 24, 2026

    • Give bare `dict`, `set` and `frozenset` return annotations structured output (#3758)

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    • Treat `typing.Dict[str, X]` return annotations like `dict[str, X]` (#3756)

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    • Drop generated titles from tool input and output schemas (#3757)

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  4. Commits on Oct 16, 2026

    • Add cache fields to directory read and `_meta` to `Skill` (#3719)

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  5. Commits on Oct 13, 2026

    • Return invalid params for unknown prompts and missing arguments (#3696)

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    • Read MCP Apps tool results from notification params (#3679)

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  6. Commits on Oct 12, 2026

    • Drop support for Python 3.10 (#3690)

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  7. Commits on Oct 11, 2026

    • Add `Skills` extension (#3485)

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  8. Commits on Oct 2, 2026

    • Link What's new to the Header parameters page (#3632)

      maxisbeymaxisbey
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    • Look the tool schema up by name for Mcp-Param-* validation instead of running tools/list (#3630)

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    • Retry a tool call once after a HeaderMismatch rejection (#3627)

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    • Omit an empty _meta and empty params from outbound requests (#3628)

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    • Document how a handler deals with cancellation (#3625)

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    • Let MCPServer opt out of serving subscriptions/listen (#3626)

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    • Describe the ID-JAG confidential-client rule as SDK policy, not a SEP-990 requirement (#3622)

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    • Keep the live Context when a prompt or template annotates Context[T] (#3624)

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    • Reject a tool with an invalid x-mcp-header annotation at registration (#3620)

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    • Document the timeout a hand-built httpx2 client needs (#3618)

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    • docs: add a middleware tutorial that refuses tool calls (#3613)

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  9. Commits on Oct 1, 2026

    • Expose an SSE event size limit in Streamable HTTP clients (#3600)

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  10. Commits on Sep 7, 2026

    • Replace RootModel wrappers with type aliases and TypeAdapter validation (#3470)

      KludexKludex
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  11. Commits on Sep 5, 2026

    • docs: stop presenting the in-memory client as the way to connect (#3443)

      maxisbeymaxisbey
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    • Add AuthSettings.validate_token_resource to check a bearer token's resource (#3447)

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  12. Commits on Sep 4, 2026

    • Follow redirects only within the MCP endpoint's origin (#3397)

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    • Deprecate constructing the pre-provisioned OAuth clients without an issuer (#3435)

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  13. Commits on Sep 2, 2026

    • Validate the authorization server metadata issuer on every discovery path (#3398)

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  14. Commits on Aug 28, 2026

    • Expire idle Streamable HTTP sessions by default and cap concurrent sessions (#3395)

      maxisbeymaxisbey
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  15. Commits on Aug 25, 2026

    • Point imports of mcp.server.fastmcp at the migration guide (#3388)

      maxisbeymaxisbey
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  16. Commits on Aug 24, 2026

    • Log MCPServer handler exceptions by kind and keep crash details off the wire (#3314)

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      maxisbeyKludex
      maxisbey
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      Kludex
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  17. Commits on Aug 20, 2026

    • Apply the request body limit to the SSE and OAuth endpoints (#3336)

      maxisbeymaxisbey
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    • Hand TypedDict tool results to pydantic natively (#3331)

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  18. Commits on Aug 17, 2026

    • Acknowledge notification POSTs with 202 on the 2026-07-28 HTTP entry (#3326)

      maxisbeymaxisbey
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    • docs: cover the remaining Tier 1 audit items (#3325)

      maxisbeymaxisbey
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