Fortytwo API documentation

The Fortytwo API is compatible with the OpenAI Chat Completions API. Base URL: https://api.fortytwo.network/v1. It has two endpoints:

Endpoint	Purpose
`GET /v1/models`	List the available model IDs
`POST /v1/chat/completions`	Generate a response

Every request needs an API key.

curl https://api.fortytwo.network/v1/models \
  -H "Authorization: Bearer $FORTYTWO_API_KEY"

Quickstart

Create a key and send the first request.

New to API keys? Connect Hermes Agent, Kilo Code, Cline, pi and more.

Create an API key and send it with each request.

Model IDs, limits and supported features.

Prices per model and what is billed.

Fields and responses of both endpoints.

Last modified on October 26, 2026