Documentation: LLM Gateway API, SDKs & Guides

nRouter provides a unified, zero-markup LLM gateway to access any model in the live catalog using a single sk-nrouter-* virtual key with built-in budgets, guardrails, and real-time observability.

Quick links

• Start building: Quick Start, Migration Guide, or Introduction.
• Integrations: SDKs, Framework integrations, and API reference.
• Governance: API keys, Budget controls, Routing setup, Dashboard guides, and Webhooks.

Example request

export NROUTER_API_KEY="sk-nrouter-…"

curl https://api.nrouter.ai/v1/chat/completions \
  -H "Authorization: Bearer $NROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"nrouter/auto","messages":[{"role":"user","content":"Hello!"}]}'