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

CLI for testing x402-enabled payment-gated APIs

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

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

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

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

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

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

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