Welcome to Linkex Docs
One OpenAI-compatible endpoint for 40+ AI models, with agent-native stablecoin payments via the x402 protocol.
Linkex (linkex.ai) is a unified AI API gateway and a settlement layer for AI agents. It puts 40+ AI providers — OpenAI, Anthropic Claude, Google Gemini, and more — behind a single OpenAI-compatible endpoint with per-token, pay-as-you-go billing.
What makes Linkex different: your agent can pay for itself. Accounts can be funded with stablecoins over the x402 protocol on BNB Smart Chain, Base, and Solana — no credit card, no human in the loop.
5-minute Quickstart
Register, create a key, and make your first API call.
Buying Credits
Crypto wallet, autonomous x402, or Alipay+ — pick your rail.
For Agents
Agent credentials, spend caps, and self-funding via x402.
Integrations
Binance Agentic Wallet, Claude Code, Cursor, and any OpenAI SDK.
At a glance
| API base URL | https://linkex.ai/v1 (OpenAI-compatible) |
| Also accepts | Anthropic Messages (/v1/messages), Gemini (/v1beta/...) |
| Billing | Per-token, pay-as-you-go — live prices |
| Funding rails | Crypto wallet (Base / BNB Chain / Solana), x402 autonomous top-up, Alipay+ e-wallets |
| Agent support | Scoped agent keys with spend caps, revocable at any time |
| Machine-readable | /llms.txt — every page is available as raw Markdown |