3 Pull requests merged by 2 people

• add pytest-pretty dev dependency

  #546 merged Apr 29, 2025

• add a timeout arguments on per-request basis (as per MCP specifications)

  #601 merged Apr 29, 2025

• replace inefficient use of to_jsonable_python

  #545 merged Apr 26, 2025

14 Pull requests opened by 9 people

• StreamableHttp client transport

  #573 opened Apr 23, 2025

• Allow function argument to be excluded from the tool's JSON schema

  #574 opened Apr 23, 2025

• Preserve non-ASCII characters in JSON output for better multilingual support

  #580 opened Apr 24, 2025

• Fix handle sse disconnect event to free read_stream_writers[session_id]

  #582 opened Apr 24, 2025

• Fix: memory leak and exit problems

  #586 opened Apr 25, 2025

• StreamableHttp -- resumability support for servers

  #587 opened Apr 25, 2025

• Private add_tool from Tool object instead of function

  #588 opened Apr 26, 2025

• Wrap JSONRPC messages with SessionMessage for metadata support

  #590 opened Apr 27, 2025

• use metadata from SessionMessage to propagate related_request_id

  #591 opened Apr 27, 2025

• StreamableHttp - client resumability

  #595 opened Apr 28, 2025

• Fix Windows subprocess NotImplementedError (STDIO clients)

  #596 opened Apr 28, 2025

• fix for SSE URL handling when a server name is specified

  #597 opened Apr 28, 2025

• Streamable Http - clean up server memory streams

  #604 opened Apr 29, 2025

• feat(blocks): introduce pluggable Block registry (no behavior change)

  #606 opened Apr 30, 2025

9 Issues closed by 3 people

• `@mcp.tool()` Fails to Find Context Argument if its Type `Context` Includes Type Variables

  #357 closed Apr 26, 2025

• `ModuleNotFoundError: No module named 'pydantic_core._pydantic_core'` when importing from `mcp.server` even though `pydantic-core` is installed

  #570 closed Apr 24, 2025

• Unable to use mysql connector in custom mcp server

  #571 closed Apr 24, 2025

• Streamable Http MCP server python SDK

  #531 closed Apr 24, 2025

• [Feature Request] Support for Streamable HTTP in Python SDK

  #558 closed Apr 24, 2025

• Streamable HTTP Support

  #405 closed Apr 24, 2025

• Does version 1.6.0 still not support Streamable HTTP?

  #506 closed Apr 24, 2025

• Unexpected script installation behavior with pip install mcp

  #579 closed Apr 24, 2025

• `NotImplementedError` on Windows with `stdio_client` and default `asyncio` backend

  #572 closed Apr 23, 2025

16 Issues opened by 16 people

• Failed to run server: No module named 'sqlalchemy'

  #605 opened Apr 29, 2025

• Clarification needed on passing session/request metadata (e.g., database identifier)

  #603 opened Apr 29, 2025

• get_prompt doesn't return the prompt description

  #602 opened Apr 29, 2025

• SDKs and other middleware SHOULD allow these timeouts to be configured on a per-request basis.

  #600 opened Apr 29, 2025

• Dynamic load or unload mcp tools

  #599 opened Apr 29, 2025

• call_tool Hangs During In-Memory Testing When Server Sends Notifications Before Response

  #594 opened Apr 28, 2025

• Response Transformation Hook/Middleware in call_tool()

  #593 opened Apr 28, 2025

• MCP stdio transport inconsistent CallTooResult return

  #592 opened Apr 27, 2025

• Chinese conversion garbled characters

  #589 opened Apr 27, 2025

• Python MCP SDK: Incorrect handling of absolute paths in SSE endpoint URLs leads to incorrect URL construction.

  #585 opened Apr 25, 2025

• Could you provide a demo for sse MCP client?

  #584 opened Apr 25, 2025

• SSE connection not established while trying to list tools via inspector

  #583 opened Apr 24, 2025

• [Feature Proposal] Dynamic Server Management with McpClientManager + FastAPI

  #581 opened Apr 24, 2025

• `RuntimeError: Attempted to exit cancel scope in a different task` when cleaning up multiple MCPClient instances out-of-order

  #577 opened Apr 24, 2025

• Tutorials or examples of running MCP server on EC2, with client that connects online instead of with STDIO Server

  #576 opened Apr 23, 2025

• Bug: RuntimeError during cleanup on Windows – no running event loop

  #575 opened Apr 23, 2025

60 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• Add ToolAnnotations support in FastMCP and lowlevel servers

  #482 commented on Apr 29, 2025 • 7 new comments

• StreamableHttp - Server transport with state management

  #553 commented on Apr 29, 2025 • 5 new comments

• StreamableHttp - stateless server support

  #554 commented on Apr 29, 2025 • 2 new comments

• Properly clean up response streams in BaseSession

  #515 commented on Apr 29, 2025 • 2 new comments

• StreamableHttp - GET request standalone SSE

  #561 commented on Apr 29, 2025 • 1 new comment

• Custom MCP requests + hooks

  #535 commented on Apr 29, 2025 • 1 new comment

• fix: Update @mcp.resource to use function documentation as default descrip…

  #489 commented on Apr 29, 2025 • 0 new comments

• Fix: Use absolute path to uv executable when installing MCP server (closes #478)

  #481 commented on Apr 29, 2025 • 0 new comments

• Add message queue for SSE messages POST endpoint

  #459 commented on Apr 24, 2025 • 0 new comments

• Fix: Use absolute path to uv executable in Claude Desktop config

  #440 commented on Apr 29, 2025 • 0 new comments

• feat: add message to ProgressNotification

  #435 commented on Apr 29, 2025 • 0 new comments

• MCP enable over UNIX socket

  #430 commented on Apr 29, 2025 • 0 new comments

• Fix setup instructions for Claud and MCP

  #425 commented on Apr 29, 2025 • 0 new comments

• Streamable HTTP client transport

  #416 commented on Apr 23, 2025 • 0 new comments

• Support Disabling SSL verification for testing

  #415 commented on Apr 29, 2025 • 0 new comments

• Prevent stdio connection hang for missing server path.

  #401 commented on Apr 29, 2025 • 0 new comments

• Fix SSE client handling of nested path URLs

  #386 commented on Apr 29, 2025 • 0 new comments

• Added support for raw request injection in RequestContext.

  #380 commented on Apr 29, 2025 • 0 new comments

• Fix process termination in stdio client

  #496 commented on Apr 29, 2025 • 0 new comments

• fix: implemented exception handling for client indefinite blocks

  #500 commented on Apr 30, 2025 • 0 new comments

• feat: use contextvar to pass process for easier access

  #513 commented on Apr 28, 2025 • 0 new comments

• Keep GitHub Actions up to date with GitHub's Dependabot

  #517 commented on Apr 29, 2025 • 0 new comments

• perf: clean up SSE session writer

  #518 commented on Apr 25, 2025 • 0 new comments

• llamallama-3.2-90b-vision-preview is deprecated

  #523 commented on Apr 29, 2025 • 0 new comments

• Python lint: Ruff rules for pylint and code complexity

  #525 commented on Apr 29, 2025 • 0 new comments

• Add mount_path support for proper SSE endpoint routing with multiple FastMCP servers

  #540 commented on Apr 28, 2025 • 0 new comments

• sse-pass-http-req

  #549 commented on Apr 29, 2025 • 0 new comments

• Fix stdio_client kill process after timeout

  #555 commented on Apr 29, 2025 • 0 new comments

• test: add pytest coverage for SSE transport functions

  #557 commented on Apr 27, 2025 • 0 new comments

• Fix hanging on streams when stdio_client exiting

  #559 commented on Apr 29, 2025 • 0 new comments

• MCP SSE Server: Received request before initialization was complete

  #423 commented on Apr 23, 2025 • 0 new comments

• `sse_client` fails if URL is not on the root path

  #563 commented on Apr 23, 2025 • 0 new comments

• sse_app() ignores mount prefix, resulting in 404 from client

  #412 commented on Apr 23, 2025 • 0 new comments

• On Windows 11 when you initialize an mcp client it hangs indefinitely

  #552 commented on Apr 23, 2025 • 0 new comments

• Add default /docs route to list information about the SSE MCP server

  #193 commented on Apr 23, 2025 • 0 new comments

• Unable to add annotations data with @FastMCP.tool() decorator

  #511 commented on Apr 24, 2025 • 0 new comments

• can we call tools and return steaming output?

  #473 commented on Apr 25, 2025 • 0 new comments

• FastMCP server with SSE transport fails to shut down on a signal

  #514 commented on Apr 25, 2025 • 0 new comments

• Passing client context to tools

  #375 commented on Apr 25, 2025 • 0 new comments

• MCP Server with Python on Claude Desktop Never Exits

  #526 commented on Apr 27, 2025 • 0 new comments

• Add support for tool annotations

  #445 commented on Apr 27, 2025 • 0 new comments

• MCP Python client fails to load the server

  #291 commented on Apr 28, 2025 • 0 new comments

• MCP server with STDIO transport throws an 'Error: SSE connection not established' when attempting to connect via MCP Inspector

  #542 commented on Apr 28, 2025 • 0 new comments

• `@app.resource()` does not accept `ctx: Context`

  #244 commented on Apr 28, 2025 • 0 new comments

• Implement Streamable HTTP transport

  #443 commented on Apr 28, 2025 • 0 new comments

• MCP Server Session Lost in Multi-Worker Environment

  #520 commented on Apr 28, 2025 • 0 new comments

• Adding Opentelemetry to MCP SDK

  #421 commented on Apr 28, 2025 • 0 new comments

• cannot get response from await session.call_tool()

  #262 commented on Apr 29, 2025 • 0 new comments

• Proactor Windows warning on cleanup when using stdio_client

  #391 commented on Apr 29, 2025 • 0 new comments

• Official Adapter Functions for LLM Providers in MCP Python SDK

  #235 commented on Apr 29, 2025 • 0 new comments

• How to get session_id in tool

  #485 commented on Apr 30, 2025 • 0 new comments

• enable http headers in sse in the context

  #216 commented on Apr 24, 2025 • 0 new comments

• Add support for serverside oauth

  #255 commented on Apr 29, 2025 • 0 new comments

• fix: enable HTTP redirect handling in SSE client

  #284 commented on Apr 29, 2025 • 0 new comments

• show_server_info

  #296 commented on Apr 23, 2025 • 0 new comments

• Add OAuth authentication client for HTTPX

  #308 commented on Apr 24, 2025 • 0 new comments

• send errors to pending requests if server closes

  #333 commented on Apr 29, 2025 • 0 new comments

• feat(client/sse): allow to set the timeout of `POST /messages`

  #340 commented on Apr 29, 2025 • 0 new comments

• Chatbot example: clean up servers in correct order

  #353 commented on Apr 29, 2025 • 0 new comments

• fix: prevent process hanging in stdio_client context manager

  #361 commented on Apr 29, 2025 • 0 new comments