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

# Connect Claude Code

> Connect Claude Code's Anthropic API route through the local CMX gateway.

# Connect Claude Code

Install Claude Code and configure its Anthropic access first. CMX detects its settings and can set `ANTHROPIC_BASE_URL` to the local gateway. The documented ready check looks for `ANTHROPIC_API_KEY` in Claude Code's environment; a browser sign-in alone may not appear as ready in `cmx providers claude list`.

```bash theme={null}
cmx setup --ask-connect-ready
cmx providers claude list
cmx harness enable claude
```

Keep your provider key in Claude Code's native environment, never in CMX configuration. Restart Claude Code, send a request, then compare `cmx stats` before and after. `cmx harness verify` checks that the client points to a live gateway.

## Return to a direct connection

```bash theme={null}
cmx harness disable claude
```

CMX restores the pre-connect settings while preserving unrelated edits when it can reconcile them. Restart Claude Code afterward. If your Claude Code account uses a subscription login rather than an API key, test a real request before relying on this route; native authentication behavior can differ by account and client version.


## Related topics

- [Connect OpenCode](/providers/opencode.md)
- [Connect Codex](/providers/codex.md)
- [Model providers and routes](/model-providers.md)