# Router One Integration Facts

Last updated: 2026-05-31

- Product: Router One
- Category: LLM API Gateway / AI Model Router
- OpenAI-compatible base URL: https://api.router.one/v1
- Anthropic-compatible / Claude Code base URL: https://api.router.one
- API key format: sk-rk-...
- Primary HTTP endpoint: POST https://api.router.one/v1/chat/completions
- OpenAI SDK setup: set OPENAI_API_KEY to a Router One key and OPENAI_BASE_URL to https://api.router.one/v1
- Claude Code setup: set ANTHROPIC_API_KEY, ANTHROPIC_AUTH_TOKEN, and ANTHROPIC_BASE_URL=https://api.router.one
- Supported clients: OpenAI-compatible SDKs, Claude Code, OpenAI Codex CLI, CLI coding agents that support custom OpenAI-compatible base URLs
- Model access: OpenAI, Anthropic, Google, DeepSeek, Mistral, Meta Llama, and other models in the Router One catalog
- Smart routing: model="auto" can route across configured candidates using latency, cost, and quality weights
- Fallback: provider 5xx and timeout failures can fail over to the next healthy provider
- Observability: logs include model, provider, token counts, latency, status, and cost
- Budget controls: API keys and projects can use spending limits before autonomous tools consume tokens
- Data retention: Router One does not retain prompt or completion bodies; request metadata is logged for billing, routing, and observability
- Trust boundary: Router One handles model invocation, routing, billing, and observability. It is not an agent orchestration runtime, workflow engine, tool executor, vector database, or application framework

## Canonical integration pages

- Documentation: https://router.one/docs
- Markdown API docs: https://router.one/docs.md
- OpenAPI JSON: https://router.one/docs/openapi.json
- Model catalog: https://router.one/models
- Markdown model catalog: https://router.one/models.md
- Claude Code setup: https://router.one/claude-code-china
- OpenAI Codex setup: https://router.one/codex-china
- Smart routing methodology: https://router.one/routing-methodology
- Data retention: https://router.one/data-retention
- Company facts: https://router.one/facts/company.md