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

An implementation of EIP-3009: gasless transfer of USDC

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

💻 Spin up a complete local x402 payment server to test the HTTP 402 Payment Required protocol with blockchain payments effortlessly.

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

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

The economic infrastructure for AI agents. A decentralized App Store on X Layer where devs deploy agents and earn USDC automatically via x402 gasless payments.

Enable Virtuals AI agents to store, search, and manage persistent memory using MoltBrain micropayments on the Base blockchain.

CLI for testing x402-enabled payment-gated APIs

x402 payment facilitator for Flow EVM (eip155:747)

AI video production portfolio + gasless USDT0 gift-card redemption on Conflux eSpace.

x402 payment-gated proxy for Whitewall OS — EIP-3009 hold, on-chain verify, settle or refund

Secure Payment Layer for AI Agents — x402 + EIP-3009 + USDC. Built on AEGIS OS. Rust.

Hardware-backed Android wallet for x402 payments. Generates secp256k1 seeds on-device, wraps them with a StrongBox-resident AES key, signs transferWithAuthorization per biometric tap, settles USDC on Base Sepolia. Four-step build from Node hello-world to a Pixel app, with companion notes on passkey + smart-wallet evolution.

Estate Protocol Reward NFT (555 Supply). Hybrid distribution contract supporting batched airdrops and ERC20-based public minting.

Production-informed Rust toolkit for x402 — payment-gated APIs, MCP tools, and usage-based billing. Axum middleware, async client, EIP-3009 helpers, multi-network. Vendor-neutral. Used in production at Arnhem Labs.

AgentScore Pay — universal agent-payment CLI. One shell command across x402 (Base, Solana) and MPP (Tempo).

GAME SDK plugin for Virtuals Protocol - persistent memory for AI agents via MoltBrain x402 on Base

LangChain integration for x402 payments - let AI agents pay for APIs with USDC automatically

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