◆ 24K LABS THE GOLD‑402 INDEX

10 Frameworks & Middleware 17

The layer between an application and the protocol — middleware, adapters, server scaffolding. Since AWS and Cloudflare made charging for an endpoint a console toggle, this shelf competes with a checkbox.

— a datacentre elevation drawing —

17 of 505 curated services sit on this shelf. 17 carry a dated knock; most recent . A knock is one HTTP request that got an answer — not a delivery test. Read a stamp as reachable and speaks the protocol, never as worth the money.

  • @moltrust/x402 Trust score middleware for x402 endpoints.
  • aixyz Next.js-like framework for building payment-native AI agents.
  • astro-x402 Astro middleware integration for the x402 Payment Protocol.
  • Azeth Provider Hono middleware for gating endpoints behind x402 with payment-agreement support for recurring agent-to-agen…
  • Cloudflare Agents SDK v0.4.0 x402 v2 migration support: `ClientEvmSigner` type, auto-selection from payment requirements, dual-header su…
  • FastAPI example Official complete FastAPI implementation with x402 payment middleware.
  • machi Agent behavior that compiles.
  • monapi One-line API monetization SDK.
  • nero-x402 First Account Abstraction-native x402 stack on NERO Chain.
  • Next.js route protection Official complete Next.js app example with x402 payment gates.
  • x402-axum Axum web framework integration (part of [x402-rs](https://github.com/x402-rs/x402-rs)).
  • x402-gateway-template Production-ready x402 gateway template.
  • x402-next App Router middleware for Next.js.
  • x402-rails Accept instant blockchain micropayments in Rails applications using x402.
  • x402-reqwest Reqwest HTTP client wrapper (part of x402-rs).
  • x402-spring-boot-starter Protect Java APIs with pay-per-call logic using a single Spring Boot annotation.
  • Zuplo x402 API gateway with x402 paywalls.