x402-facilitator

Rust SDK for the x402 payment protocol.

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.

Golang implementation of an x402 payment facilitator

x402 payment facilitator — verifies and settles EIP-3009 USDC micropayments on Base, Arbitrum, and Ethereum.

Self-hosted x402 payment facilitator server — verifies and settles any ERC-20 token via EIP-7702

This experimental project explores how Zenon can serve as a settlement rail for HTTP-native payments between AI agents, APIs, and autonomous services.

Self-serve x402 payment infrastructure for AI agents. Pay-per-call APIs with USDC on Base, Solana, and Cosmos.

MCP-native pay-per-tool-call micropayments for AI agents (Solana + USDC + x402)

A complete x402 facilitator implementation for Arbitrum

Experimental terminal gateway for x402-powered APIs, HTTP 402 payments, and agent-ready workflows on Base.

On-chain attestation service that lets agents prove they produced a specific output (hash + metadata) at a given time, settled via x402 on Algorand.

Learn x402 and ship pay-per-request APIs on Solana. Free interactive tutorial, live 402 lab, checker, and middleware generator — for humans and AI agents.

x402 Protocol Facilitator for the Nano network

Consensus Protocol x402 Facilitator supporting ICP, EVM and SVM micropayments.

Public dashboard of Venice AI rate-limit/balance info and Facilitator balance. Allows anyone on the internet to top up the Facilitator

A simple Stellar x402 Middleware

x402 settlement facilitator + EAS-compatible threat-intel attestation issuer on Base mainnet

SBC x402 Facilitator — verifies and settles payments using the x402 protocol (v2).

A searchable index of x402-enabled APIs for autonomous agents