Skip Login

~/.claude/settings.json

{
  "apiKeyHelper": "echo {apiKey}"
}

Project settings

/path/to/project/.claude/settings.local.json

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://openrouter.ai/api",
    "ANTHROPIC_AUTH_TOKEN": "FILL-WITH-API-KEY",
    "ANTHROPIC_API_KEY": ""
  }
}