# Connect an MCP client

The MCP endpoint gives an agent eight read-only tools.
The MCP endpoint is public and needs no login.
It supports the 2026-07-28 protocol and a 2025-03-26 compatibility path.

Use the LUCA Pay endpoint for Pay questions:

```text
https://luca-pay-agents-preview.pages.dev/mcp
```

Use the LUCA Plus endpoint for Plus questions:

```text
https://luca-plus-agents-preview.pages.dev/mcp
```

For a client that takes a remote MCP URL, add the URL.
For a client that needs a local process, use the [local MCP guide](/docs/how-to/use-cli/).

After connection, call `get_product_overview`.
Then call `answer_question` with the person's question.
Open the returned source URLs before you answer.

For a modern protocol check, send `server/discover`:

```bash
curl -X POST 'https://luca-pay-agents-preview.pages.dev/mcp' \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -H 'MCP-Protocol-Version: 2026-07-28' \
  -H 'Mcp-Method: server/discover' \
  -d '{"jsonrpc":"2.0","id":1,"method":"server/discover","params":{"_meta":{"io.modelcontextprotocol/protocolVersion":"2026-07-28","io.modelcontextprotocol/clientInfo":{"name":"example","version":"1.0"},"io.modelcontextprotocol/clientCapabilities":{}}}}'
```

The endpoint is read-only.
It does not collect leads or submit an application.