2 Releases published by 2 people

• v1.10.0

  published Jun 26, 2025

• v1.10.1

  published Jun 27, 2025

7 Pull requests merged by 5 people

• Flaky test fix

  #1050 merged Jun 29, 2025

• Update MCP to use Pydantic>=2.11

  #1041 merged Jun 27, 2025

• Remove setting global logging config

  #1048 merged Jun 27, 2025

• Remove frozen from build

  #1040 merged Jun 26, 2025

• unpin jsonschema version

  #1037 merged Jun 26, 2025

• Update latest protocol version to 2025-06-18

  #1036 merged Jun 26, 2025

• feat: Add structured output support for tool functions

  #993 merged Jun 26, 2025

13 Pull requests opened by 12 people

• Bug fix: a missing type variable ReceiveResultT in the BaseSession class definition.

  #1034 opened Jun 26, 2025

• Adding roots changed and initialized notification handlers

  #1043 opened Jun 26, 2025

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

  #1044 opened Jun 26, 2025

• fix: support "form_post" to be one of response modes in authorization server metadata validation

  #1046 opened Jun 27, 2025

• Embed code snippets for README from executable examples

  #1055 opened Jun 29, 2025

• Fix JSON array response handling in StreamableHTTP client transport

  #1057 opened Jun 30, 2025

• feat: Allow any value type in get_prompt arguments

  #1058 opened Jun 30, 2025

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

  #1059 opened Jun 30, 2025

• Support falling back to OIDC metadata for auth

  #1061 opened Jun 30, 2025

• Update text to make clear Elicitation is not directly associated with…

  #1062 opened Jun 30, 2025

• tests: add lowest dependency tests

  #1067 opened Jul 1, 2025

• Add regression test for issue #1027

  #1069 opened Jul 1, 2025

• RFC9728 WWW-Authenticate parsing for MCP client

  #1071 opened Jul 2, 2025

9 Issues closed by 7 people

• How to get session_id in tool

  #986 closed Jul 1, 2025

• Given a server configuration, how can I know if it's sse or streamablehttp server?

  #983 closed Jul 1, 2025

• Bug Report: StreamableHTTP GET Requests Fail with "Bad Request: Missing session ID" During Initial Connection

  #1051 closed Jun 28, 2025

• Request redirection for the MCP server mounted with FastAPI

  #951 closed Jun 28, 2025

• Unintended global logging configuration introduced in v1.10.0

  #1045 closed Jun 27, 2025

• SseServerTransport should better handle the quoting the post message endpoint.

  #827 closed Jun 27, 2025

• New JSON Schema Requirement Bumps with LiteLLM

  #1029 closed Jun 26, 2025

• update latest version in SDK

  #923 closed Jun 26, 2025

• add Tool.outputSchema and CallToolResult.structuredContent

  #919 closed Jun 26, 2025

14 Issues opened by 13 people

• Unexpected connection closed

  #1070 opened Jul 2, 2025

• FastMCP 2.0 vs MCP Python SDK Server

  #1068 opened Jul 1, 2025

• MCP Completion Issue

  #1065 opened Jul 1, 2025

• Requesting the mcp server through the mcp stdio method cannot correctly read the environment variables

  #1064 opened Jul 1, 2025

• Issue: Custom HTTP Headers (e.g., mcp-session-id) Not Received by FastMCP Server

  #1063 opened Jun 30, 2025

• PydanticSchemaGenerationError: Unable to generate pydantic-core schema for Image type

  #1060 opened Jun 30, 2025

• inconsistent actions between python sdk and specification for Elicitation

  #1056 opened Jun 30, 2025

• WWW-Authenticate header is not respected by Client SDK

  #1054 opened Jun 28, 2025

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

  #1053 opened Jun 28, 2025

• The resource URL path is ignored when building the protected resource metadata URL

  #1052 opened Jun 28, 2025

• oauth protected resource metadata URL

  #1049 opened Jun 28, 2025

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

  #1038 opened Jun 26, 2025

• mcp.shared.auth_utils package not available on main branch

  #1035 opened Jun 26, 2025

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

  #1033 opened Jun 26, 2025

43 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.

• #552

  #707 commented on Jul 1, 2025 • 4 new comments

• Improved Trio support

  #946 commented on Jul 2, 2025 • 4 new comments

• Added CORS middleware to allow cross-origin requests

  #371 commented on Jun 28, 2025 • 1 new comment

• How tools should be created to use images in Claude Desktop?

  #771 commented on Jun 26, 2025 • 0 new comments

• Sending cancellation notification to server based on client anyio.CancelScope status

  #628 commented on Jun 28, 2025 • 0 new comments

• Align stdio shutdown sequence with spec

  #765 commented on Jul 1, 2025 • 0 new comments

• Feature: Async handling of sampling calls

  #840 commented on Jul 2, 2025 • 0 new comments

• Fix child process kill error with npx based servers

  #850 commented on Jul 1, 2025 • 0 new comments

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

  #882 commented on Jun 29, 2025 • 0 new comments

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

  #900 commented on Jul 1, 2025 • 0 new comments

• docs: add pre-commit install guide on CONTRIBUTING.md

  #995 commented on Jun 28, 2025 • 0 new comments

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

  #996 commented on Jun 28, 2025 • 0 new comments

• Enhance FastMCP server with port override functionality

  #997 commented on Jun 26, 2025 • 0 new comments

• fix: use normalized path for sse message endpoint

  #1000 commented on Jul 1, 2025 • 0 new comments

• Fix FastMCP integration tests and transport security

  #1001 commented on Jun 30, 2025 • 0 new comments

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

  #1002 commented on Jun 28, 2025 • 0 new comments

• feat: default streamable_http_path to "/" for consistency

  #1007 commented on Jul 2, 2025 • 0 new comments

• fix: Add exception handling for POST request failures in StreamableHTTP

  #1008 commented on Jun 27, 2025 • 0 new comments

• feat: Make maximum message size configurable

  #1019 commented on Jun 27, 2025 • 0 new comments

• Implement support for `client_credentials`

  #1020 commented on Jul 2, 2025 • 0 new comments

• add resource templates in example to make example complete

  #1021 commented on Jun 26, 2025 • 0 new comments

• add authorizer plugin to enable fine grained authorization checks on …

  #1032 commented on Jun 28, 2025 • 0 new comments

• Enable FastMCP to filter tools, prompts, resources using a fine grained policy

  #1031 commented on Jun 26, 2025 • 0 new comments

• Bug Report: FastMCP `RuntimeError: Received request before initialization was complete` Leading to Empty SSE Responses When Embedded in FastAPI

  #737 commented on Jun 27, 2025 • 0 new comments

• BUG REPORT: HTTP errors are being silently swallowed in the StreamableHTTP client

  #1010 commented on Jun 27, 2025 • 0 new comments

• Question: How to log information in MCP server

  #467 commented on Jun 27, 2025 • 0 new comments

• Empty tools list when calling tools/list method

  #1030 commented on Jun 28, 2025 • 0 new comments

• how to manage multi streamable http server lifespan

  #713 commented on Jun 29, 2025 • 0 new comments

• context.report_progress not sending notifications on streamable-http

  #953 commented on Jun 29, 2025 • 0 new comments

• enhance auth server discovery with OAuth2 and OIDC metadata support

  #976 commented on Jun 30, 2025 • 0 new comments

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

  #959 commented on Jun 30, 2025 • 0 new comments

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

  #412 commented on Jul 1, 2025 • 0 new comments

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

  #987 commented on Jul 1, 2025 • 0 new comments

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

  #961 commented on Jul 1, 2025 • 0 new comments

• Unable to run a minimal MCP server and testing it with mcp inspector.

  #858 commented on Jul 1, 2025 • 0 new comments

• VSCode Support

  #1024 commented on Jul 1, 2025 • 0 new comments

• Claude Desktop never uses resources from my MCP server

  #1016 commented on Jul 1, 2025 • 0 new comments

• The cleanup procedure after "yield" in lifespan is unreachable on Windows

  #1027 commented on Jul 1, 2025 • 0 new comments

• SSE 路径带上key，messages/接口如何获取到这个key，进行message消息里的auth认证

  #497 commented on Jul 2, 2025 • 0 new comments

• how to get http request headers in mcp tools logic when i use streamable http mode to run mcp server ?

  #750 commented on Jul 2, 2025 • 0 new comments

• Important - List Resource is not working

  #268 commented on Jul 2, 2025 • 0 new comments

• AssertionError: Unexpected message while using middlewares

  #883 commented on Jul 2, 2025 • 0 new comments

• Pass Token Bearer from Client to MCP Server

  #998 commented on Jul 2, 2025 • 0 new comments