MCP Apps formalizes interactive tool interfaces
MCP maintainers launched an official extension for forms, visualizations and workflows inside conversations.
Event Source published Indexed Verified
Why it matters
Users can manipulate tool results directly instead of requesting every change in text.
A closer look
Tool metadata references ui:// resources rendered in sandboxed iframes. JSON-RPC over postMessage connects the interface and host.
Who this is for
MCP server developers and conversational product teams
Original sources
Revisions & corrections (1)
— Initial source-verified editorial collection