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Short, sourced guides on connecting MCP servers to Microsoft Copilot Studio. Numbers are live from the directory's nightly data build (2026-10-21).

Streamable HTTP vs SSE vs stdio: which MCP transports work with Copilot Studio

The three MCP transports, which one Copilot Studio accepts, and what to do with the 15,676 registry entries that are local-only packages.

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Verdicts are rule-based estimates from public metadata and a read-only protocol probe, not tested in Copilot Studio. Independent project, not affiliated with Microsoft.