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Availability of the meta parameter in tool definition on the server

feature requestRequest for a new feature that's not currently supportedRequest for a new feature that's not currently supported

P0Broken core functionality, security issues, critical missing featureBroken core functionality, security issues, critical missing feature

ready for workEnough information for someone to start working onEnough information for someone to start working on

Status: Closed (completed).

#1462 In modelcontextprotocol/python-sdk;

· by gabteixeira was closed on Oct 17, 2025

feat: add tool metadata in FastMCP.tool decorator

needs maintainer actionPotentially serious issue - needs proactive fix and maintainer attentionPotentially serious issue - needs proactive fix and maintainer attention

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 1463

#1463 In modelcontextprotocol/python-sdk;

· by mat-octave was closed on Oct 17, 2025

Allow CallToolResult to be returned directly to support _meta field for OpenAI Apps

enhancementNew feature or requestNew feature or request

needs maintainer actionPotentially serious issue - needs proactive fix and maintainer attentionPotentially serious issue - needs proactive fix and maintainer attention

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 1459

#1459 In modelcontextprotocol/python-sdk;

· by BrandonShar was closed on Oct 21, 2025

Expose RequestParams._meta in ClientSession.call_tool

needs maintainer actionPotentially serious issue - needs proactive fix and maintainer attentionPotentially serious issue - needs proactive fix and maintainer attention

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 1231

#1231 In modelcontextprotocol/python-sdk;

· by samchenatti was closed on Oct 17, 2025