Skip to main content

​
fastmcp.utilities.mime

MIME type constants and helpers for MCP Apps UI resources. This module has no dependencies on the server or resource packages, so it can be safely imported from anywhere.

​
Functions

​
resolve_ui_mime_type 

resolve_ui_mime_type(uri: str, explicit_mime_type: str | None) -> str | None
Return the appropriate MIME type for a resource URI. For ui:// scheme resources, defaults to UI_MIME_TYPE when no explicit MIME type is provided. Args:
  • uri: The resource URI string
  • explicit_mime_type: The MIME type explicitly provided by the user
Returns:
  • The resolved MIME type (explicit value, UI default, or None)