Paste your API key, pick your tool, and download ready-to-use config files.
📘First time? Download our step-by-step guide — opening the generator, generating your files, setting up Claude Code, and editing your own config later. Includes an FAQ.⬇ Download guide (PDF)
⚠Match your group. Your key only works with the model / group it was purchased for. After setup, pick that model inside Claude Code — if you choose a model your key does not cover, it will not work (you may see “model not found”, 401, or 404 errors). All purchased keys are non-refundable — double-check before you buy.
The key you received after purchase. It starts with sk-gos-.
All keys route through the Gratobeun Gateway (https://api.gratobeun.com/v1).
Codex (unavailable)
Claude Code
⛔Codex is no longer available. Gratobeun now serves Claude Code only. Please use the Claude Code tab above to generate your configuration.
ℹThese files default to gpt-5.5. Pick whichever model your key's group supports from inside the Codex extension — it switches models directly. To change the startup default, edit the model / review_model lines in config.toml.
config.toml
Place in ~/.codex/ · Windows: press Win+R → %USERPROFILE%\.codex
auth.json
Place in the same ~/.codex/ folder, next to config.toml.
ℹThis file points Claude Code at the Gratobeun Gateway. Pick whichever model your key's group supports from inside Claude Code — it switches models directly. Claude Code needs a Claude-tier key; if your key isn't for a Claude group the gateway returns a clean error (non-Claude keys won't work here).
settings.json
Place in ~/.claude/ · Windows: press Win+R → %USERPROFILE%\.claude
⚠Enter your API key above to fill in the files. They are generated entirely in your browser — your key is never uploaded anywhere.
🔒Privacy: This page runs 100% in your browser. Your API key is never sent to Gratobeun or any server — generation happens locally. You can even save this page and use it offline.