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modelcontextprotocol
python-sdk
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fix(mcpserver): preserve Annotated/Field metadata for dict[str, T] return types
Docs Preview Cleanup
#393:
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fix(server): don't raise when tool_use is not followed by tool_result
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fix(server): guard error-path send into closed session stream
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feat(mcpserver): let ToolError carry content for is_error results
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Add list_all_* helpers that drain pagination on the client
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#389:
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Fix substring matches in WWW-Authenticate parsing
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Clarify missing tool_result validation error
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fix(streamable-http): reject duplicate in-flight request ids
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fix(dispatcher): reject duplicate in-flight request ids
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Preserve query components in PRM resource URLs
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fix: forbid extra arguments in FastMCP tool arg models (#3067)
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fix(server): guard GET SSE response with CancelScope to prevent Windows deadlock (#2653)
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docs: clarify OpenTelemetry spans for resources and prompts
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fix(server): reject changed duplicate initialize
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fix(stdio): serve bufferless std streams as text instead of crashing
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fix: catch BrokenPipeError in stdio stdout_writer
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fix: Raise StreamableHTTPError on reconnection failure
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fix(server): generate tool output schema in serialization mode
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fix: self-describing error for requests before session initialization (was generic -32602)
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fix: include RFC 6750 scope parameter in insufficient_scope challenge
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fix(streamable-http): close SSE responses on errors
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feat: expand InitializationState with explicit lifecycle state machine
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#372:
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fix: preserve notification metadata when related_request_id is 0
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fix(server): allow tools with outputSchema to surface errors via unstructured content
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fix(shared): strip envelope fields when forwarding JSONRPCRequest
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