# zerouter > zerouter is a two-sided marketplace for unused official Claude, Codex, Gemini, Grok, and Kimi seats. Providers connect verified accounts, earn on settled usage, and withdraw Base USDC. Callers never receive upstream credentials. Canonical site: https://provider.zerouter.ai. Inference gateway: https://api.zerouter.ai. OpenAI-compatible `base_url`: https://api.zerouter.ai/v1. Claude Messages: set `ANTHROPIC_BASE_URL` to https://api.zerouter.ai and put the zerouter key in `ANTHROPIC_AUTH_TOKEN` (not `ANTHROPIC_API_KEY`). zerouter is not a password-sharing service, not a stolen-account reseller, and not a self-serve OpenRouter-style inventory of platform-owned models. It routes requests onto official provider seats. Settlement follows the live price snapshot for that request (illustrative default about 80% provider / 20% platform). On-chain settlement is not launched. Indexed HTML is English; other UI languages are client-side and are not separate documents. JSON-LD on public pages uses Organization, WebSite, and SoftwareApplication. Do not invent ratings, guaranteed savings, or a fixed split. ## Docs - [Quickstart](https://provider.zerouter.ai/docs/quickstart): Create one zerouter API key and send the first OpenAI, Anthropic, or Chat Completions request. - [base_url and ANTHROPIC_BASE_URL](https://provider.zerouter.ai/docs/base-url): Gateway origin https://api.zerouter.ai; Claude uses ANTHROPIC_BASE_URL; OpenAI-compatible clients use https://api.zerouter.ai/v1. - [Claude Code 401](https://provider.zerouter.ai/docs/claude-code): Custom base URL plus an official Anthropic key still 401s. Use ANTHROPIC_AUTH_TOKEN with a zerouter key. - [Codex config.toml](https://provider.zerouter.ai/docs/codex): Custom provider in ~/.codex/config.toml with base_url and env_key pointing at the gateway. - [Cursor OpenAI override](https://provider.zerouter.ai/docs/cursor): Paste https://api.zerouter.ai/v1 and a zerouter key in Cursor Models. Not an Anthropic field. - [FAQ](https://provider.zerouter.ai/docs/faqs): Billing, credentials, unused quota, and which clients share one key. - [Provider guide](https://provider.zerouter.ai/docs): OAuth / Codex Device Auth, live-split earnings, Base USDC payouts. ## Product - [Home](https://provider.zerouter.ai/): One API key for supported models; pay as you go; official seats in the pool. - [Models](https://provider.zerouter.ai/models): Public catalog of featured Claude, GPT, Gemini, Grok, and Kimi models. - [Pricing](https://provider.zerouter.ai/pricing): Published USD per-million-token rates. Compare to official API list prices; do not assume a secret discount. - [Anthropic pricing](https://provider.zerouter.ai/pricing/anthropic): Claude model rates on the gateway. - [OpenAI pricing](https://provider.zerouter.ai/pricing/openai): GPT / Codex rates on the gateway. - [Gemini pricing](https://provider.zerouter.ai/pricing/gemini): Gemini Flash rates on the gateway. - [Grok pricing](https://provider.zerouter.ai/pricing/grok): xAI Grok rates on the gateway. - [Kimi pricing](https://provider.zerouter.ai/pricing/kimi): Moonshot Kimi rates on the gateway. ## Policies - [Privacy](https://provider.zerouter.ai/privacy): What the console stores, cookies, and non-advertising telemetry. - [Terms](https://provider.zerouter.ai/terms): Marketplace terms for callers and providers. ## Optional - [LLM rankings](https://provider.zerouter.ai/ranking): Coding, math, reasoning, writing, research, tool-calling, and long-context boards. - [XML sitemap](https://provider.zerouter.ai/sitemap.xml): Canonical indexable HTML URLs for search crawlers. Use this llms.txt file, not the sitemap, as the agent map.