> ## Documentation Index
> Fetch the complete documentation index at: https://docs.harbormcp.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Lighthouse (Gateway)

> Start and monitor the HTTP/SSE gateway, and publish your tools to the internet.

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.

## Controls

| Control               | Description                                                                    |
| --------------------- | ------------------------------------------------------------------------------ |
| **Start/Stop toggle** | Launch or shut down the gateway                                                |
| **Expose to network** | Toggle between localhost-only (`127.0.0.1`) and network-accessible (`0.0.0.0`) |
| **Bearer token**      | Set a token required for remote (non-localhost) access                         |
| **Endpoint URL**      | Shows the gateway URL — click to copy                                          |

## 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:

| Field            | Description                                                     |
| ---------------- | --------------------------------------------------------------- |
| **Public URL**   | The internet-accessible endpoint — click to copy                |
| **Bearer token** | Auto-generated token required by remote callers — click to copy |

### 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.

### Connecting from another machine

Use the public URL and bearer token to connect any MCP client:

```sh theme={null}
# Claude Code
claude mcp add harbor --transport http https://abc123.relay.harbormcp.ai/mcp \
  --header "Authorization: Bearer hbr_..."

# curl
curl -X POST https://abc123.relay.harbormcp.ai/mcp \
  -H "Authorization: Bearer hbr_..." \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"tools/list","params":{},"id":1}'
```

You can also add it as a remote server in another Harbor instance via **Servers → Add Server → Remote**.

See the [Publishing guide](/guides/publishing) for self-hosting, security details, and CLI usage.

## 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

## 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](/guides/gateway) for endpoint details and configuration.