# Claude Code with zurelay

> Anthropic’s coding agent for the terminal and IDE. Made by Anthropic.

Source: https://zurelay.com/docs/integrations/claude-code

The examples use `claude-opus-5-5`. Any Claude model ID from [the models page](https://zurelay.com/docs/models) works.

## Set it up

1. Set `ANTHROPIC_BASE_URL` to `https://api.zurelay.com`, with no `/v1`. Claude Code adds `/v1/messages` itself.
2. Set `ANTHROPIC_AUTH_TOKEN` to your zurelay key. It’s sent as a Bearer token, with no approval prompt.
3. Point the Opus, Sonnet and Haiku aliases at zurelay models, then run `claude`.
4. To keep the setup, put the same values in the `env` block of `~/.claude/settings.json`.

## Configuration

**Shell** (`terminal`):

```bash
export ANTHROPIC_BASE_URL="https://api.zurelay.com"
export ANTHROPIC_AUTH_TOKEN="$ZURELAY_API_KEY"
export ANTHROPIC_DEFAULT_OPUS_MODEL="claude-opus-5-5"
export ANTHROPIC_DEFAULT_SONNET_MODEL="claude-sonnet-5-5"
export ANTHROPIC_DEFAULT_HAIKU_MODEL="claude-sonnet-5-5"

claude --model claude-opus-5-5
```

**settings.json** (`~/.claude/settings.json`):

```json
{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.zurelay.com",
    "ANTHROPIC_AUTH_TOKEN": "<ZURELAY_API_KEY>",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "claude-opus-5-5",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "claude-sonnet-5-5",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "claude-sonnet-5-5"
  },
  "model": "claude-opus-5-5"
}
```

> **Note:** Claude Code speaks the Anthropic API, so it runs on Claude models. Map the Haiku alias too: Claude Code uses it for background work. In the VS Code extension, add the same variables under `claudeCode.environmentVariables`.

[Claude Code’s own docs](https://code.claude.com/docs/en/llm-gateway-connect)