create-typescript-x402-server

Build TypeScript servers that gate API endpoints behind Algorand (AVM) payments using Express.js or Hono middleware.

The server middleware intercepts requests to protected routes, checks for a valid X-PAYMENT header, and either returns 402 (pay first) or passes through to the route handler (payment verified).

There are three middleware variants, from simplest to most configurable:

Create x402 payment-protected servers with Express.js and Hono. Use when building a resource server that returns 402 Payment Required, setting up payment middleware, configuring protected routes, implementing multi-network support (AVM+EVM+SVM), integrating paywall UI, building facilitator servers, or implementing dynamic pricing. Strong triggers include "create an x402 server", "add payment middleware to Express", "protect routes with x402", "set up payment-gated API", "hono payment middleware", "402 payment required server", "x402 express server", "x402 hono server", "build a facilitator server", "fee abstraction server". Source: algorand-devrel/algorand-agent-skills.