Agent Zero MCP Server is an SSE MCP running on the same URL and port as the Web UI + /mcp/sse or /mcp/http path.
The same applies if you run A0 on a public URL using a tunnel.
The token used in the URL is automatically generated from your username and password. This same token is also used for external API endpoints. The token changes when you update your credentials.
The token is intentionally not retrievable from OpenOperator. Replace YOUR_SPYNEL_AGENT_ZERO_API_KEY with the value configured as your Hugging Face secret SPYNEL_AGENT_ZERO_API_KEY.