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Update FastMCP for 6/18/2025 MCP Protocol Update

enhancementNew feature or requestNew feature or request

feature

Status: Open.

#899 In jlowin/fastmcp;

· jlowin opened on Jun 20, 2025

 ·  

MCP 6/18/25

Issue with Azure App Service and Copilot Studio Agent integration

bugSomething isn't workingSomething isn't working

Status: Open.

#891 In jlowin/fastmcp;

· langhorstg316 opened on Jun 20, 2025

OpenAPI Server base path does not get into account by FASTMCP server

bugSomething isn't workingSomething isn't working

Status: Open.

#886 In jlowin/fastmcp;

· thedevd opened on Jun 20, 2025

LLM may send all-string arguments; FastMCP crashes instead of gracefully handling input—suggest fallback/robustness mechanism

bugSomething isn't workingSomething isn't working

Status: Open.

#883 In jlowin/fastmcp;

· waylandun opened on Jun 20, 2025

Unknown SSE event: ping

bugSomething isn't workingSomething isn't working

Status: Open.

#876 In jlowin/fastmcp;

· jalbarracinv opened on Jun 19, 2025

Host option not supported when using streamable-http

bugSomething isn't workingSomething isn't working

Status: Open.

#873 In jlowin/fastmcp;

· AgentCosmic opened on Jun 19, 2025

Add server map/manifest CLI command

enhancementNew feature or requestNew feature or request

Status: Open.

#866 In jlowin/fastmcp;

· jlowin opened on Jun 18, 2025

The registered tool support non-async method

enhancementNew feature or requestNew feature or request

Status: Open.

#864 In jlowin/fastmcp;

· cuckootan opened on Jun 18, 2025

AssertionError: Unexpected message while using middleware

bugSomething isn't workingSomething isn't working

Status: Open.

#858 In jlowin/fastmcp;

· JonZeolla opened on Jun 17, 2025

FastMCP does not work with OpenAI's responses API

bugSomething isn't workingSomething isn't working

Status: Open.

#855 In jlowin/fastmcp;

· iitgrad opened on Jun 17, 2025

A “413 Request Entity Too Large” error is reported when transferring a file larger than 2MB from the client to the server.

bugSomething isn't workingSomething isn't working

Status: Open.

#854 In jlowin/fastmcp;

· yangchangping opened on Jun 17, 2025

Client returns 405 method not allowed with SSE connections

bugSomething isn't workingSomething isn't working

Status: Open.

#853 In jlowin/fastmcp;

· AthaSSiN opened on Jun 16, 2025