# Linkex

> Linkex (linkex.ai) is a unified AI API gateway. It aggregates 40+ AI providers — OpenAI, Anthropic Claude, Google Gemini, and more — behind a single OpenAI-compatible endpoint, with usage-based per-token billing, rate limiting, and an admin dashboard. It also supports AI agents with native x402 payments (v2, exact scheme) on BNB Smart Chain, Base, and Solana.

Developer documentation: https://docs.linkex.ai (machine-readable index: https://docs.linkex.ai/llms.txt)

## Pages

- [Linkex — Unified AI API Gateway for 40+ Models](https://linkex.ai/): Linkex is a unified AI API gateway. Access OpenAI, Claude, Gemini, and 40+ providers through one OpenAI-compatible endpoint, with usage-based billing, rate limiting, and a clean admin dashboard.
- [x402 for AI Agents on Base — Linkex](https://linkex.ai/x402): Agent-native payments with the x402 protocol on Base. Let AI agents pay per API request autonomously, settled on-chain, through Linkex.
- [About Linkex — Unified AI API Gateway](https://linkex.ai/about): Linkex (linkex.ai) is a unified AI API gateway aggregating 40+ providers behind one API, with billing, rate limiting, and an admin dashboard for teams and agents.
- [Agent Team & x402 — Linkex](https://linkex.ai/agent): Build and deploy AI agents on Linkex. Native agent payments via the x402 protocol on Base, plus a unified API for the models your agents depend on.
- [Pricing & Models — Linkex AI API Gateway](https://linkex.ai/pricing): Transparent, pay-as-you-go pricing for 40+ AI models on Linkex. Compare per-token prices for OpenAI, Claude, Gemini, and more — no subscriptions, no lock-in.
- [AI Model Rankings — Linkex](https://linkex.ai/rankings): Live rankings of AI models by usage and popularity on Linkex. See which OpenAI, Claude, Gemini, and open models developers rely on most.
- [Terms of Service — Linkex](https://linkex.ai/legal/terms): The terms that govern your use of Linkex.
- [Refund Policy — Linkex](https://linkex.ai/legal/refund): Linkex refund and billing policy.
- [Privacy Policy — Linkex](https://linkex.ai/legal/privacy): How Linkex collects, uses, and protects your data.
- [User Agreement — Linkex](https://linkex.ai/user-agreement): The Linkex user agreement.

## Documentation

- [Linkex Docs](https://docs.linkex.ai): Quickstart, buying credits (crypto wallet / x402 / Alipay+), agent credentials, x402 protocol reference, integrations (Binance Agentic Wallet, Claude Code, Cursor, OpenAI SDK), API reference.