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Before you begin

  1. Sign up for a free account at verlon.ai/signup
  2. Get your API key from the Dashboard
  3. Create your first gate with your desired model configuration

Install an SDK

Verlon is a drop-in gateway: you call it with the official OpenAI SDK (or Anthropic SDK) in any language — no Verlon-specific client required.

Make your first request

Point the client at Verlon and pass your gate’s ID as the model — Verlon routes the request to whatever model the gate is configured for, with fallbacks, spending caps, and logging applied on the way through.
Already calling OpenAI or Anthropic directly? You don’t need the gate ID at all to start — swap baseURL and apiKey, keep your model names, and Verlon picks up the traffic. See Migrate an existing app.

What’s Next?

OpenAI SDK Integration

Streaming, tool calling, and the full migration guide

Gates & Routing

Understand how gates provide smart routing and fallbacks

Agent Tracing

Trace agent runs with the Verlon SDK — tasks, tools, and sessions

Dashboard Guide

Deep dive into creating and configuring gates