Services that verify and settle x402 payments for you.
A facilitator verifies and settles x402 payments so your resource server never touches on-chain logic: it returns 402, the agent pays, the facilitator confirms, and you serve the response. Running without one means operating your own signer, nonce tracking and chain RPC — most teams outsource that.
Below are the facilitator projects tracked in the directory: hosted services, self-hostable servers, and multi-chain settlement implementations.
Real projects from the directory · stars live from GitHub · sorted by popularity. Showing the top 60 of 74.
Accept payments from AI agents. Open-source. Your data, your domain, your rules. Free forever.
A production-ready payment settlement service for the x402 protocol. Built with Elysia and Node.js, it verifies cryptographic payment signatures and settles transactions on-chain for EVM, SVM (Solana), and Starknet networks.
x402 payment facilitator — verifies and settles EIP-3009 USDC micropayments on Base, Arbitrum, and Ethereum.
Off-chain credit ledger + hire marketplace for AI agents. Ed25519-signed envelopes, atomic settlement, hire-and-release escrow. https://voidly.ai/pay
go-x402-facilitator is a facilitator for X402 payment implemented in the Go language.
An x402 facilitator server for local development that works natively with Tenderly Virtual TestNets. Avoiding bottlenecks while working on public TestNets and using faucets for x402 development.
A TypeScript library implementing the x402 Payment Protocol facilitator pattern. This library provides payment verification and settlement functionality for both EVM and SVM (Solana Virtual Machine) networks.
Run your own payment gateway as a Docker image, or use ours online to verify and settle x402 transactions instantly.
One-command local development environment for HTTP 402 Payment Required protocol with blockchain payments (EIP-3009 USDC)
Local x402 payment facilitator for development and testing. Fork Base mainnet with Anvil, verify and settle x402 payments locally.
x402 payment facilitator — verifies and settles EIP-3009 micropayments multichain. v2 facilitator.
Self-hosted x402 payment facilitator server — verifies and settles any ERC-20 token via EIP-7702
X402 payment facilitator for AI API billing with Solana USDC and Base USDC support.
Proof of Concept facilitator for accepting XMR/Monero via x402 protocol
Gas-sponsored USDC transfers on Ethereum mainnet via ERC-20 permit signatures
TON blockchain facilitator for x402 payment protocol — verify and settle USDT payments via TONAPI gasless relay
OpenZeppelin Relayer - x402 Facilitator plugin
💻 Spin up a complete local x402 payment server to test the HTTP 402 Payment Required protocol with blockchain payments effortlessly.
A lightweight x402 payment facilitator built with Hono. An educational re-implementation of the official Coinbase example.
A complete x402 facilitator implementation for Arbitrum
Multi-chain settlement cost router for the x402 payment protocol. Selects the cheapest or fastest blockchain for each AI agent micropayment.
An x402 / agent-payment project in the Facilitators category.
Trustless x402 facilitator running in a TEE via Oasis ROFL
The settlement layer for AI agent payments. Per-call billing, 10 protocols, built-in discovery. Free forever.
Forkable x402 facilitator and server for receiving CASH payments on Solana
Agent spending verification — budget caps, spending policies, and cross-agent budget tracking. Works with AP2, MPP, x402, or any payment rail.
TypeScript-style x402 v2 settlement adapter for XRPL in Python: issue challenges, build payment memos, verify on-ledger settlement, replay-safe.
Example of a paywalled image gallery. This uses pop402 as the facilitator to ensure that the wallet owns whatever content they are trying to view.
Smart Meta‑Facilitator (SMF) for x402 on Base – Atomic USDC escrow + Merkle batch settlement contract, TypeScript SDK, and examples for routing/settling payments on Base mainnet.
SBC x402 Facilitator — verifies and settles payments using the x402 protocol (v2).
Escrow-based settlement for Google's A2A protocol — hold funds during task execution, release on completion, refund on failure
A robust middleware layer designed for the x402 ecosystem to handle deterministic verification and atomic settlement of protocol operations.
Turn your WDK wallet into an x402 facilitator
Development x402 facilitator that works with Tenderly Virtual Networks.
Production-ready Rust x402 Facilitator with 15+ enterprise features
Consensus Protocol x402 Facilitator supporting ICP, EVM and SVM micropayments.
Express.js JavaScript server acting as a BCH x402 Facilitator
x402 Facilitator for AgentPay �?Bridge between x402 protocol and CKB Fiber Network
The x402 Concordium Facilitator (XCF) implements a rail-agnostic x402 facilitator (UFX) plus a Concordium Rail Plugin (CRP) that verifies finalized PLT transfers (no token contracts), enforces exact-amount matching, and issues JWS-signed receipts with JWKS rotation.
Standalone x402 facilitator service for Stacks blockchain payment verification and settlement
Load balancer and proxy for Cronos x402 facilitator with circuit breaker and retry logic
OpenZeppelin Relayer Plugin for X402 Facilitator
x402 payment protocol - facilitator SDK for verifying and settling payments on-chain
Unified x402 facilitator server — supports EIP-7702 (any ERC-20) and ERC-3009 (USDC) payment mechanisms
We currently track 74 Facilitators projects in the directory, drawn from open-source repositories building on x402 and agent payments. The list above is sorted by GitHub stars and updates as new projects are submitted and crawled.
x402 is an open standard for paying for an HTTP resource: a server replies with HTTP 402 and payment terms, the client pays (usually USDC), and the request is fulfilled. The Facilitators projects above implement or build on this flow.
Submit it from the Submit page. We crawl the repository, classify it, and it appears in the relevant category pages — including this one if it matches.