Connect your own agents over MCP
POST /api/mcp implements the Model Context Protocol over stateless streamable HTTP. Authenticate with an agent key issued from the admin console — the raw key is shown once — and the server lists the business tools on that agent's allowlist, plus four built-in controls for reading action status and driving loop runs. Nothing outside the allowlist is offered. A tools/call goes into the same gateway as our own agents: the same policy checks, the same approvals inbox, the same ledger. GET is answered 405 on purpose; MCP here is POST only.