The current implementations of ChatGPT Apps and MCP Apps rely on Resource metadata
This is a missing implementation in the current Python SDK which disables usage of decorator as an example.
How Has This Been Tested?
Unit testing and end to end integration (MCP Inspector/ChatGPT)
Breaking Changes
No
Types of changes
Bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds functionality)
Breaking change (fix or feature that would cause existing functionality to change)
maxisbey
added
enhancement
Request for a new feature that's not currently supported
P2
Moderate issues affecting some users, edge cases, potentially valuable feature
labels
Jan 12, 2026
Add meta field support to Resource, ResourceTemplate, FunctionResource,
and ReadResourceContents. The metadata is propagated through the decorator,
resource/template storage, list operations, and read responses via the
_meta protocol field.
Cherry-picked from 0da9a07 (PR #1840).
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Motivation and Context
The current implementations of ChatGPT Apps and MCP Apps rely on Resource metadata
This is a missing implementation in the current Python SDK which disables usage of decorator as an example.
How Has This Been Tested?
Unit testing and end to end integration (MCP Inspector/ChatGPT)
Breaking Changes
No
Types of changes
Checklist
Additional context
This has been list as a part of the MCP Apps Working Group initiative