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.

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

A complete x402 facilitator implementation for Arbitrum

A searchable index of x402-enabled APIs for autonomous agents

x402 Protocol Facilitator for the Nano network

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

Satoshi x402 Facilitator — https://facilitator.bitcoinsapi.com — Base + Solana, gas sponsoring, open source

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

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