Repository Issue Activity (beta)

#671 Bug Report: MCP Apps UI Resource Not Rendering in Claude Desktop / claude.ai

#143 setupSizeChangedNotifications reports size before content is ready, causing widgets to collapse

#694 Clarify host behavior for rendering an MCP App view when the tool result is an error (isError: true)

#688 Minimal preferred size

#674 Set up public MCP Apps platform tests

#692 Showcase: Mimir — local-first persistent memory server (43 MCP tools, AES-256, bi-temporal)

#431 Accessibility

#678 Support configuring approved redirect domains for ui/open-link

#689 Guidelines for hosts to support Command Line (CLI) MCP Apps

#387 Support `frameDomains` → `frame-src` CSP Mapping for External Iframe Embeds

#605 Support `wasm-unsafe-eval` CSP directive to enable WebAssembly in MCP Apps

#684 Pinned or Split Screen MCP Apps

#687 fresh install of basic-host example fails

#686 autoResize misses absolutely-positioned portal growth (popover opens → no size-changed)

#676 Should hostCapabilities.appTools exist?

#682 د

#673 Adding an official MCP App validator

#672 Explore UI views that are not tied to specific tool calls

#668 Clarify MCP Apps behavior with code mode

#669 Define a breaking-change process for Apps security and CSP behavior

#670 Explore MCP App discovery mechanisms

#665 @modelcontextprotocol/ext-apps consumers ship ~140K of unused zod v4 locale files in browser bundles

#458 Multiple `initialize` calls per conversation breaks `Mcp-Session-Id` linking

#661 ,.

#647 `tools/call` requests no longer echo `Mcp-Session-Id` (violates Streamable HTTP spec)