All issues

Search results

Extend permission-policy negotiation for media/video widgets (fullscreen, presentation/Cast, remote-playback, PiP, encrypted-media)

Status: Open.

#757 In modelcontextprotocol/ext-apps;

· lukaskroepfl opened on Aug 25, 2026

MCP spec conformance: 5 requirements violated (via @hasmcp/mcp-spec-test) — spec 2025-11-25

Status: Open.

#756 In modelcontextprotocol/ext-apps;

· hasmcp-dev opened on Aug 24, 2026

MCP spec conformance: 10 requirements violated (via @hasmcp/mcp-spec-test) — spec 2026-07-28

Status: Open.

#755 In modelcontextprotocol/ext-apps;

· hasmcp-dev opened on Aug 24, 2026

Host support for persistent (pip/pinned) app views: clinical use case where inline rendering breaks the core loop

Status: Open.

#754 In modelcontextprotocol/ext-apps;

· Conicia opened on Aug 24, 2026

Widget callServerTool calls hardcode bare tool names, breaking under multi-server MCP hosts

Status: Open.

#753 In modelcontextprotocol/ext-apps;

· jcollas opened on Aug 23, 2026

Grok host: MCP Apps iframe rendering unstable for Paybox connector (custom BYO MCP)

Status: Open.

#750 In modelcontextprotocol/ext-apps;

· cursor opened on Aug 19, 2026

No way to distinguish an app-initiated tools/call from a model-initiated one

Status: Open.

#746 In modelcontextprotocol/ext-apps;

· blakebauman opened on Aug 15, 2026

Apps cannot call their server's tools through a namespacing aggregator

Status: Open.

#745 In modelcontextprotocol/ext-apps;

· blakebauman opened on Aug 15, 2026

Add UI "preload" Control and "ui/close" Signal for MCP Apps Tool-Driven Widgets

enhancementNew feature or requestNew feature or request

Status: Open.

#744 In modelcontextprotocol/ext-apps;

· sunnymitramsft opened on Aug 14, 2026

MCP Apps Conformance Test - Host Interface Requirements

Status: Open.

#743 In modelcontextprotocol/ext-apps;

· qchuchu opened on Aug 13, 2026

Documentation for MCP Apps does not match 2026-07-28 specification

bugSomething isn't workingSomething isn't working

Status: Open.

#742 In modelcontextprotocol/ext-apps;

· symdeb opened on Aug 12, 2026

App view frame is labeled with the tool name, not its title — no _meta.ui field to name a view

Status: Open.

#740 In modelcontextprotocol/ext-apps;

· waddah12alhajar opened on Aug 5, 2026