Shipping to Microsoft 365 Copilot

Copilot renders MCP apps as interactive widgets inside declarative agents. You attach an MCP server-based plugin whose tools return UI. Copilot supports both MCP Apps and the OpenAI Apps SDK, with the coverage documented in host-capability-matrix.

Prerequisites

• A remote MCP server (local stdio is not an option here).
• Visual Studio Code.
• Microsoft 365 Agents Toolkit 6.12.0 or later.
• MCP Inspector for verifying server responses before wiring Copilot up.
• The general Copilot extensibility requirements (tenant, licensing).

Allowed URLs — the step everyone misses

Both your MCP server and your identity provider must allowlist these.