stablecoin-payments

The agent-native LLM router for autonomous agents. Every frontier model behind one wallet, <1ms local routing, USDC payments on Base & Solana via x402.

🚀 Curated list of x402 resources: HTTP 402 Payment Required protocol for blockchain payments, crypto micropayments, AI agents, API monetization. Includes SDKs (TypeScript, Python, Rust), examples, facilitators (Coinbase, Cloudflare), MCP integration, tutorials. Accept USDC payments with one line of code. Perfect for AI agent economy.

Yolfi Agent Kit SDK, CLI, and MCP server for AI coding agents.

QPi-Stablecoin is the official repository for the QPi project, which aims to transform Pi Coin into a quantum-secure stablecoin pegged to the value of $314.159.

Building your first stablecoin payment flow on Arc Testnet

The MPP registry — 100+ Machine Payments Protocol tools, SDKs, services, and payment methods across 15+ chains. The definitive directory for Stripe + Tempo agent payments.

Open-source software for building a neobank. Product screens, a 181-operation banking API, a double-entry ledger and a canonical stablecoin FX engine. MIT licensed, self-hostable, runs on Node or Cloudflare Workers.

Programmable Wallets for Salesforce, powered by Circle Programmable Wallets, is an open source solution built on Circle Programmable Wallet technology to operating 100% within the Salesforce ecosystem.

Medusa v2 plugin adding UCP and ACP endpoints plus Prism stablecoin payments for AI-agent commerce

Collateral that can still sell itself — Magpie's x402 agent API: borrow SOL programmatically on Solana.

USDZ BEP20 Stablecoin. It is pegged to BUSD. Universal solution for payments, remittance, banking, trading, and many other business applications

Node.js and TypeScript SDK for ButterPay crypto payment gateway. Accept BTC, ETH, USDC, USDT at 0.8% flat fees with one-call integration.

Manage AI agent teams locally using CLI, OAuth, and API tools to simulate a virtual company with autonomous workflows.

Not just a crypto wallet 🌏 ₿ #doyourownresearch

lightning payment services for stablecoins

Production reference for agentic commerce: protocols (ACP, AP2, x402, MCP), stablecoin rails, agent skills, and the merchant playbooks specs leave out — refunds, multi-chain settlement, catalog discovery, fraud, jurisdiction, receipts. Maintained by Cryptorefills.

TrustLink Pay is an identity-first Solana payment system that lets users send and receive crypto using phone numbers and 10-digit TINs instead of wallet addresses. WhatsApp handles authentication, business verification, and payment notifications, while TSN settles payments through privacy-preserving vault routing.

TypeScript library to build and verify USDC payments and subscriptions on Solana, with SIWS. Built on @solana/kit.

Whether you're running an online store or a retail location, we have the tools you need to start accepting crypto payments.

X402 payment facilitator for AI API billing with Solana USDC and Base USDC support.