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The Lighthouse page is the control panel for Harbor’s HTTP/SSE gateway. It lets you start, stop, and monitor the gateway that exposes your MCP servers over the network — and publish them to the internet via a secure tunnel.

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Controls

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Publish to Internet

The Publish section lets you expose your gateway to the internet without opening firewall ports or configuring a static IP. Click Publish and Harbor establishes an outbound QUIC tunnel to the relay server. Once published:

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Advanced options

Expand Advanced before publishing to set a custom subdomain (e.g. myname → myname.relay.harbormcp.ai). Leave blank for a random auto-assigned subdomain.

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Connecting from another machine

Use the public URL and bearer token to connect any MCP client:
You can also add it as a remote server in another Harbor instance via Servers → Add Server → Remote. See the Publishing guide for self-hosting, security details, and CLI usage.

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Signal Log

The Lighthouse page includes a live log viewer that streams gateway activity in real-time:
  • Auto-scrolls to the latest entries
  • Export logs to a file
  • Clear the log

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Security

When exposed to the network (0.0.0.0), configure a bearer token for authentication. Localhost connections are always trusted — no token required. Remote connections without a valid Authorization: Bearer <token> header are rejected with 401. Published tunnels are always protected by a bearer token — unauthenticated requests are rejected at the relay before they reach your machine. See the gateway guide for endpoint details and configuration.