1 Release published by 1 person

• v1.13.0

  published Aug 14, 2025

2 Pull requests merged by 2 people

• fix: prevent async generator cleanup errors in StreamableHTTP transport

  #1271 merged Aug 14, 2025

• Update dependencies and fix type issues

  #1268 merged Aug 14, 2025

3 Pull requests opened by 3 people

• Fastmcp logging progress example

  #1270 opened Aug 13, 2025

• fix: error too many values to unpack (expected 2)

  #1279 opened Aug 17, 2025

• Support SSL certificate verification option when creating httpx AsyncClient

  #1280 opened Aug 18, 2025

2 Issues closed by 2 people

• Potential memory leak in StreamableHTTPSessionManager due to idle sessions not being cleaned up

  #1283 closed Aug 19, 2025

• Support unix domain sockets for local transport

  #1266 closed Aug 13, 2025

10 Issues opened by 10 people

• 怎么实现类似https://open.bigmodel.cn/api/mcp/web_search/sse?Authorization= YOUR API Key 这样的授权功能

  #1282 opened Aug 19, 2025

• Modular system to define MCP Primitives

  #1281 opened Aug 18, 2025

• StdioServerTransport Fails to Invoke Tool Handlers on Linux (Python SDK)

  #1278 opened Aug 16, 2025

• How to get environment variables on the server?

  #1277 opened Aug 15, 2025

• mcp.server.fastmcp.FastMCP doesn't behave the same as fastmcp.FastMCP

  #1276 opened Aug 15, 2025

• Bad Request when using multiple workers

  #1275 opened Aug 15, 2025

• Streamable HTTP client performance regression starting with v1.12.0

  #1274 opened Aug 14, 2025

• FASTMCP_ env var prefixes no longer respected since 1.12.3

  #1273 opened Aug 14, 2025

• Server hangs when shutting down if a connection is still open

  #1272 opened Aug 14, 2025

• FastMCP server death on client HEAD calls

  #1269 opened Aug 13, 2025

20 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 ValidationOptions for lenient output schema validation

  #1260 commented on Aug 20, 2025 • 4 new comments

• Added Audio to FastMCP

  #1130 commented on Aug 16, 2025 • 2 new comments

• Fix workspace configuration error with structured_output_lowlevel.py

  #1259 commented on Aug 14, 2025 • 0 new comments

• Implement RFC 7523 JWT flows

  #1247 commented on Aug 18, 2025 • 0 new comments

• fix: Handle SSE Disconnects Properly When use starlette middleware

  #1222 commented on Aug 19, 2025 • 0 new comments

• Feature: Non-Blocking call_tool and request state externalisation

  #1209 commented on Aug 20, 2025 • 0 new comments

• docs: clarify streamable_http_path configuration when mounting servers

  #1172 commented on Aug 14, 2025 • 0 new comments

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

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

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

  #880 commented on Aug 20, 2025 • 0 new comments

• Option to not rewrite the logging configuration

  #420 commented on Aug 19, 2025 • 0 new comments

• MCP connection fails silently

  #1100 commented on Aug 19, 2025 • 0 new comments

• can we call tools and return steaming output?

  #472 commented on Aug 18, 2025 • 0 new comments

• AssertionError: Unexpected message while using middlewares

  #883 commented on Aug 16, 2025 • 0 new comments

• Support Tag-Based Tool Filtering in MCP Server

  #522 commented on Aug 16, 2025 • 0 new comments

• Is call_tool response streaming

  #470 commented on Aug 15, 2025 • 0 new comments

• Question: How to authorise a client with Bearer header with SSE?

  #431 commented on Aug 15, 2025 • 0 new comments

• MCP servers can not be accessed via Docker and docker-compose anymore.

  #790 commented on Aug 14, 2025 • 0 new comments

• What is the recommended way of writing unit tests for MCP endpoints?

  #1252 commented on Aug 14, 2025 • 0 new comments

• MCP cannot process fastapi JSONResponse

  #1160 commented on Aug 14, 2025 • 0 new comments

• Python SDK v2

  #1253 commented on Aug 13, 2025 • 0 new comments