# x402go Documentation

- [x402Go](https://docs.x402go.online/index.md): Accept stablecoin payments on your API with x402.
- [Quickstart](https://docs.x402go.online/quickstart.md): Protect an Express endpoint with x402 and get paid in stablecoins through x402Go.
- [How it works](https://docs.x402go.online/guides/how-it-works.md): Understand the x402 payment lifecycle and how x402Go routes settled payments.
- [Express](https://docs.x402go.online/guides/express.md): Charge for Express endpoints with x402 and let x402Go verify, settle, and pay you.
- [Hono](https://docs.x402go.online/guides/hono.md): Charge for Hono endpoints with x402 and let x402Go verify, settle, and pay you.
- [Next.js](https://docs.x402go.online/guides/nextjs.md): Charge for Next.js App Router endpoints with x402 and let x402Go verify, settle, and pay you.
- [Celo Sepolia sandbox](https://docs.x402go.online/guides/celo-sepolia.md): Test your x402Go integration end to end on Celo Sepolia with free testnet USDC before you go live.
- [Security and contracts](https://docs.x402go.online/guides/security.md): How to keep your API key safe, how payments are routed, and the verified contract addresses behind x402Go.
- [API reference](https://docs.x402go.online/api-reference/overview.md): Base URL, authentication, and the request and response formats for the x402Go facilitator endpoints.


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