Frequently asked questions

zerouter is a marketplace for unused official Claude, Codex, Gemini, Grok, and Kimi seats. Providers host quota they are not using. Callers pay per token with one key. The split on each settled request is 80/20.

Sign in, create one platform API key, then point your client at the zerouter gateway. Claude Code needs ANTHROPIC_BASE_URL plus ANTHROPIC_AUTH_TOKEN. The same key works for other clients that allow a custom endpoint.

The caller home walkthrough covers the three steps. Open the models catalog to pick a model id.

Claude Code, Codex CLI, OpenCode, Cursor, Aider, Cline, Roo Code, Kilo Code, Continue, Gemini CLI, Windsurf, and anything you add in CC Switch as a custom provider.

SDKs: OpenAI (Python and TypeScript), Anthropic, LangChain, LlamaIndex, PydanticAI, Vercel AI SDK, Mastra, or plain HTTP. The client has to allow a custom base URL.

Set ANTHROPIC_BASE_URL to the zerouter gateway. Put the platform key in ANTHROPIC_AUTH_TOKEN. If you leave it in ANTHROPIC_API_KEY, Claude Code still talks to Anthropic and you get 401.

You need two values: the base URL and one API key. Same key works for Codex CLI, Cursor, and CC Switch if those clients let you set a custom endpoint.

Almost always the env var. Custom gateways read ANTHROPIC_AUTH_TOKEN. ANTHROPIC_API_KEY is the official Anthropic key and ignores your base URL.

Also check you did not paste a trailing slash that your client doubles up, and that the key is a zerouter key, not a leftover Anthropic key.

Setup questions and incidents go to Telegram. Product notes are posted on X. Include the request id from the usage ledger when you ask about a failed call.

Provider payout and Codex Device Auth steps are in the docs.

Current flagship models from Claude, GPT, Gemini, Grok, and Kimi. The public catalog updates as seats come online. Each model lists its protocol path and the published USD per 1M rates.

Browse the models catalog or the pricing table for the live list.

No. Providers own the seats. We take a cut of settled usage, so swapping in a cheaper model would cut our own fee.

The model string you send is the model that is billed.

No. The path is zerouter, then the official API. There is no reseller chain in the middle that can rewrite prompts.

Providers authorize on the official domain. Callers only get a platform API key.

Callers never see it. Providers finish OAuth or device auth on api.anthropic.com / auth.openai.com. We store an encrypted credential for routing only.

If you are a caller, you only receive a platform API key.

No monthly seat fee. Input, output, and cache tokens are billed at the published USD per 1M rate for that model. The snapshot stored with the request is the one that counts.

Recharge when you need to. One balance covers every supported model. Methods and minimums are on the recharge screen.

Often, because you are using unused subscription quota, not buying Anthropic API list price. We do not resell logins.

Published per-million rates are on the pricing page. Compare those numbers to official API.

Illegal content, CSAM, non-consensual sexual content, and scraping model output to train or distill another model. Repeat abuse can close the account. The Terms of Service is the full list.