feat: MCP app support — interactive iframe UIs in chat#28
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gabe-lyons wants to merge 3 commits intomainfrom
Open
feat: MCP app support — interactive iframe UIs in chat#28gabe-lyons wants to merge 3 commits intomainfrom
gabe-lyons wants to merge 3 commits intomainfrom
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Promotes MCP_APP from WORK_TYPES to INTERACTIVE_TYPES so app frames render alongside proposal cards instead of collapsing with tool calls. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Adds end-to-end support for MCP apps — interactive iframe-based UIs that the agent can spawn inline in chat (e.g. for context curation, proposal flows). Built on top of the existing MCP context-platform integration; cherry-picked from
talksterand tidied up.MCP_APPSSE event,mcp_app_toolwrapper that emitsMCP_APP_READY:<app_id>markers,/api/mcp_apps/*endpoints (resolve UI + tool-call proxy), proposals/results tool pair, MCP UI + resources context modules.MCPAppFrameiframe host with postMessage bridge (useMcpAppBridge+protocol.ts),MCPAppMessageadapter for SSE payloads,ProposalsMessage/ProposalResultsMessage/SelectionChipcomponents.MCP_APPout of the collapsibleAgentWorkBlockintoINTERACTIVE_TYPES, so app frames render as siblings of proposal cards and stay visible instead of collapsing with tool calls.Test plan
just test— unit tests includingtests/unit/test_business_context_suppression.pyget_context-style tool, confirm the iframe renders inline and stays visible across turn collapsemcp_app-sourced user message routes back through SSEcd frontend && pnpm tsc --noEmit🤖 Generated with Claude Code