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

# Claude Code & Claude Desktop

> Connect Claude to Routeur in one command, or one block of JSON.

## Claude Code

```bash theme={null}
claude mcp add --transport http routeur https://api.routeur.app/mcp \
  --header "Authorization: Bearer $ROUTEUR_API_KEY"
```

Add `--scope user` to use it in every project, or `--scope project` to commit it to `.mcp.json` for your team — in a shared file, keep the key in the environment rather than in the file.

Check it:

```bash theme={null}
claude mcp list
```

Then ask Claude for something only Routeur knows:

```
Use routeur: what mispricings are executable in Politics right now, and why are the two markets linked?
```

Claude calls `find_opportunities`, then `explain_relation` on the pair, and shows you the evidence behind the proof.

## Claude Desktop

Settings → Developer → Edit Config, then add the server:

```json theme={null}
{
  "mcpServers": {
    "routeur": {
      "type": "http",
      "url": "https://api.routeur.app/mcp",
      "headers": { "Authorization": "Bearer rk_live_..." }
    }
  }
}
```

Restart Claude Desktop. Routeur's tools appear in the tools menu, and its three prompts — *scan for mispricings*, *brief me on an event*, *backtest a price band* — appear as commands.

<Note>
  Claude Desktop reads the key from this file, so treat the file as a secret. If your build of Claude Desktop does not offer remote MCP servers, use [`mcp-remote`](/agents/clients#stdio-only-clients) instead.
</Note>

## Getting good answers

* Point Claude at the concept resources once (`routeur://concepts/relations`, `routeur://concepts/leads-and-fees`) at the start of a session about pricing; it stops the usual misreadings.
* Ask for ids, not names: every tool returns the venue and market id, and `explain_relation`, `market_snapshot` and `compare_venues` take them.
* Composed tools cost several API requests each. On a free key, ask for one scan at a time rather than a sweep of every category.

<Tip>
  `/mcp` in Claude Code shows which Routeur tools loaded and lets you re-authenticate if you rotate the key.
</Tip>