eip-3009

Self-hosted, non-custodial gateway between the API you already run and the protocols AI agents use to discover, call and pay for it

Eleven autonomous AI agents open live football prop markets on X Layer — custom Uniswap v4 hook, gasless USDT0 staking.

One-command local development environment for HTTP 402 Payment Required protocol with blockchain payments (EIP-3009 USDC)

TypeScript SDK for PayBot – Let your AI agent pay for things

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

An implementation of EIP-3009: gasless transfer of USDC

Multi-agent orchestrator that gates micro-payments on quality - agents only get paid when their work passes.

x402 starter kit for Arbitrum: a Claude agent that pays for APIs with USDC, a Hono seller and an embedded facilitator. Gasless for the buyer via EIP-3009.

Fail-closed spend guard for x402 agent payments: stateful policy plugin, EIP-3009 replay middleware, and DrainBench — a reproducible adversarial drain benchmark

x402 payment protocol implementation in .NET - enable AI agents to pay for your APIs with USDC micropayments

Zero-dependency HTTP 402 fetch replacement for autonomous AI agents. EIP-3009 gasless USDC on Base. Buyer, seller, and MCP server.

AgentScore Pay — universal agent-payment CLI. One shell command across x402 (Base) and MPP (Tempo, Solana). Body preserved end-to-end; agent never sees a private key.

Stripe for AI agent API calls — wrap any REST API in an x402 USDC paywall with ERC-8004 identity + reputation gating. Agents auto-pay per call; verified, reputation-aware, settled on-chain on Avalanche.

CLI for testing x402-enabled payment-gated APIs

xGAS: Immutable wrapped native asset with permit and authorization-based transfer extensions.

Gasless EIP-3009 (transferWithAuthorization) stablecoin transfers for the Tether Wallet Development Kit (WDK). A WDK protocol module — Node + Bare, brittle-tested, full TypeScript types.

🌐 Open, pluggable Agent Payments platform for AWS Bedrock AgentCore — any wallet, any protocol, any governance. Live on HashKey Chain Testnet.

Autonomous agent for microquery.dev — pay per query via x402 (EIP-3009 transferWithAuthorization), no pre-deposit required

Keyless MCP enrichment for AI agents — pay-per-call business & crypto data in USDC on Base via x402, Ed25519-attested. No API key, no signup.

Seller test server for the x402 protocol — Express middleware demo for testing x402 USDC micropayments. XPay seller endpoint.