# `Cairnloop.Web.MCP.AuthPlug`
[🔗](https://github.com/szTheory/cairnloop/blob/main/lib/cairnloop/web/mcp/auth_plug.ex#L1)

Validates Bearer tokens for MCP.
Does NOT halt the connection on failure. Simply assigns `conn.assigns.mcp_token` if valid.

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*Consult [api-reference.md](api-reference.md) for complete listing*