1 Release published by 1 person

• v1.11.0

  published Jul 10, 2025

25 Pull requests merged by 14 people

• tests: use inline_snapshot.Is on parametrized test

  #945 merged Jul 14, 2025

• Close server session after handle stateless request

  #1116 merged Jul 14, 2025

• README - replace code snippets with examples - direct execution and display utilities

  #1137 merged Jul 14, 2025

• tests: mark trailing slash test as xfail

  #1138 merged Jul 14, 2025

• README - replace code snippets with examples

  #1136 merged Jul 14, 2025

• Fix BaseModel method name conflicts in func_metadata

  #1123 merged Jul 14, 2025

• add regression tests for #1113

  #1122 merged Jul 11, 2025

• Update routing for streamable HTTP to avoid 307 redirect

  #1115 merged Jul 11, 2025

• Avoiding to parse string arguments containing valid JSON if the argument annotation is str

  #1113 merged Jul 10, 2025

• Ensure failed oauth registration response is read before accessing response.text

  #1118 merged Jul 10, 2025

• The lifespan_context object here is not a dictionary like the other e…

  #1002 merged Jul 10, 2025

• Fix missing line in generated snippets

  #1117 merged Jul 10, 2025

• chore: add markdownlint on pre-commit hook and lint md files

  #996 merged Jul 10, 2025

• Adding description field to the FastMCP get_prompt method

  #614 merged Jul 9, 2025

• Fix: Prevent session manager shutdown on individual session crash

  #841 merged Jul 9, 2025

• fweinberger/align shutdown with spec

  #1091 merged Jul 9, 2025

• fix pyright check in CI

  #1108 merged Jul 9, 2025

• Fix completions

  #1107 merged Jul 9, 2025

• clean up log.error

  #1109 merged Jul 9, 2025

• Doc update + validation in SseServerTransport + existing test fixes: addresses Issue: #827

  #900 merged Jul 9, 2025

• Add regression test for issue #1027

  #1069 merged Jul 8, 2025

• #552

  #707 merged Jul 8, 2025

• remove max message size

  #1105 merged Jul 8, 2025

• Improve child process termination on POSIX & Windows

  #1078 merged Jul 8, 2025

• Unify process termination on POSIX & Windows (+ tests)

  #1044 merged Jul 8, 2025

10 Pull requests opened by 10 people

• Add streamable HTTP starlette example to Python SDK docs

  #1111 opened Jul 9, 2025

• Add httpx.HTTPStatusError error handling to tool run

  #1119 opened Jul 10, 2025

• [fix] add type field to client session config BaseModels

  #1127 opened Jul 11, 2025

• Added Audio to FastMCP

  #1130 opened Jul 12, 2025

• Allow arbitrary types in model creation by updating config in create_model

  #1132 opened Jul 12, 2025

• feat: ClientConnectionManager to manage multiple sessions without async with

  #1133 opened Jul 12, 2025

• Set LifespanResultT default=Any to prevent reportMissingTypeArgument

  #1139 opened Jul 14, 2025

• Add regression test for stateless request memory cleanup

  #1140 opened Jul 14, 2025

• fix: attempt to query resource-specific protected resource metadata before root PRM

  #1142 opened Jul 15, 2025

• Increasing Buffer Size in MCP stdio Transport

  #1143 opened Jul 15, 2025

15 Issues closed by 10 people

• uvicon server configured should be able to get extra settings from FastMcp constructor extra args.

  #1106 closed Jul 14, 2025

• test_streamable_http.py::test_streamablehttp_client_resumption hangs intermittently

  #744 closed Jul 11, 2025

• 307 Temporary Redirect

  #732 closed Jul 11, 2025

• Server

  #1114 closed Jul 11, 2025

• StreamableHTTP session manager shutting down

  #1104 closed Jul 11, 2025

• `simple-tool` exiting error

  #932 closed Jul 10, 2025

• Unexpected behavior of streamable-http transport on public server

  #1081 closed Jul 9, 2025

• `RuntimeError: Task group is not initialized` in the simplest possible MCP server with default config

  #838 closed Jul 9, 2025

• Implement Tool Annotations

  #910 closed Jul 9, 2025

• CallToolResult type missing member structuredContent

  #810 closed Jul 9, 2025

• `Context.session.send_notification` doesn't behave as expected

  #215 closed Jul 8, 2025

• MCP should specificy recommended tool permissions

  #322 closed Jul 8, 2025

• feat: Provide an option to increase request payload size in server implementation

  #959 closed Jul 8, 2025

• Re: Discussing the Decision to Not Make FastMCP the MCP Python standard

  #644 closed Jul 8, 2025

• Running into an `ImportError` when executing the MCP client in `examples/servers/simple-tool`

  #1101 closed Jul 8, 2025

14 Issues opened by 14 people

• streamable_http client call_tool hangs when receiving invalid JSONRPCMessage

  #1144 opened Jul 15, 2025

• Progress notifications cause server to hang on stdio transport

  #1141 opened Jul 14, 2025

• MCP Python SDK sessionId not maintained in browser with TypeScript SDK client

  #1135 opened Jul 14, 2025

• Use inspect.getdoc(fn) instead of fn.__doc__ in tool automatic description retrieval in FastMCP

  #1134 opened Jul 13, 2025

• Pydantic schema generation fails for non-standard output types in toolkit functions

  #1131 opened Jul 12, 2025

• Tool context kwarg detection not compatible with string-valued/__future__ annotations

  #1129 opened Jul 12, 2025

• Native sampling method on Context

  #1128 opened Jul 11, 2025

• Specifying capabilities w/ FastMCP Server

  #1126 opened Jul 11, 2025

• Is there a way to protect tools, ie auth parameters for @mcp.tool()?

  #1125 opened Jul 11, 2025

• How to stream reponse back from MCP server to Client? (MCP Tool Streaming)

  #1124 opened Jul 11, 2025

• MCP tool proxy, planned pull request. Allowing for Seamless Human or determinism (private keys, etc) in the middle.

  #1121 opened Jul 10, 2025

• How to create an inner decorator for tools?

  #1120 opened Jul 10, 2025

• Strings parameters tool containing serialized JSON objects are automatically decoded

  #1112 opened Jul 9, 2025

• MCP client not able to initiate StdioServerParameters while running in Jupyter Notebook

  #1103 opened Jul 8, 2025

40 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 support for remote-oauth-support Fix #686

  #764 commented on Jul 9, 2025 • 9 new comments

• Implement RFC9728 - Support WWW-Authenticate header by MCP client

  #1071 commented on Jul 14, 2025 • 1 new comment

• Fix/get prompt description

  #640 commented on Jul 14, 2025 • 1 new comment

• An error exists in the elicitation example

  #1084 commented on Jul 14, 2025 • 0 new comments

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

  #594 commented on Jul 14, 2025 • 0 new comments

• Streamable HTTP transport fails when accessing MCP server on Cloud Run using sdk

  #1053 commented on Jul 15, 2025 • 0 new comments

• show_server_info

  #296 commented on Jul 11, 2025 • 0 new comments

• Feature/add enable disable methods tools

  #728 commented on Jul 10, 2025 • 0 new comments

• feat: Add output schema generation for tools and update documentation

  #757 commented on Jul 8, 2025 • 0 new comments

• fix: add status field in Resource class and Resource as a return type in CallToolResult

  #758 commented on Jul 14, 2025 • 0 new comments

• Deleted hanging `prompt_manager.py` module since no file was using it.

  #864 commented on Jul 10, 2025 • 0 new comments

• OAuth Update: Adding the Client Credentials & Token Exchange Grant Types

  #882 commented on Jul 15, 2025 • 0 new comments

• Improved Trio support

  #946 commented on Jul 14, 2025 • 0 new comments

• Handle '&scope=' in authorize request to return empty list

  #979 commented on Jul 8, 2025 • 0 new comments

• Implement support for `client_credentials`

  #1020 commented on Jul 10, 2025 • 0 new comments

• Adding roots changed and initialized notification handlers

  #1043 commented on Jul 10, 2025 • 0 new comments

• feat: Add CORS configuration for browser-based MCP clients

  #1059 commented on Jul 10, 2025 • 0 new comments

• Support falling back to OIDC metadata for auth

  #1061 commented on Jul 14, 2025 • 0 new comments

• FEAT: enables oauth proxy capability

  #1075 commented on Jul 12, 2025 • 0 new comments

• Implemented runtime tools

  #1089 commented on Jul 14, 2025 • 0 new comments

• Unable to work properly with SSE transport when perform long time task

  #503 commented on Jul 8, 2025 • 0 new comments

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

  #511 commented on Jul 8, 2025 • 0 new comments

• Is call_tool response streaming

  #470 commented on Jul 8, 2025 • 0 new comments

• Different models for the same entity for FastMCP vs low-level.Server.

  #1033 commented on Jul 8, 2025 • 0 new comments

• FastMCP 2.0 vs MCP Python SDK Server

  #1068 commented on Jul 8, 2025 • 0 new comments

• How to actually build session persistence in streamable http MCP server?

  #880 commented on Jul 8, 2025 • 0 new comments

• How to handle user file inputs/outputs in MCP python?

  #1080 commented on Jul 8, 2025 • 0 new comments

• Claude Desktop never uses resources from my MCP server

  #1016 commented on Jul 9, 2025 • 0 new comments

• Bug Report: CallToolResult serialization fails with "Input should be a valid dictionary" error

  #987 commented on Jul 9, 2025 • 0 new comments

• oauth protected resource metadata URL

  #1049 commented on Jul 9, 2025 • 0 new comments

• Working example- httpstreamable

  #938 commented on Jul 9, 2025 • 0 new comments

• how to connect streamble http server by domain?

  #1077 commented on Jul 9, 2025 • 0 new comments

• how to pass the token to the MCP Server side

  #1094 commented on Jul 9, 2025 • 0 new comments

• Option to not rewrite the logging configuration

  #420 commented on Jul 9, 2025 • 0 new comments

• Add SSL Certificate Verification Options to FastMCP Client

  #870 commented on Jul 10, 2025 • 0 new comments

• Stateless Mode memory leak

  #756 commented on Jul 12, 2025 • 0 new comments

• Errors with Streamble HTTP

  #1072 commented on Jul 12, 2025 • 0 new comments

• MCP Server Internal Server Error Report

  #417 commented on Jul 14, 2025 • 0 new comments

• Response ID-value not matching request value, due to default int

  #961 commented on Jul 14, 2025 • 0 new comments

• MCP server: AccessToken class should have field for subject claim ("sub")

  #1038 commented on Jul 14, 2025 • 0 new comments