Agentic Finance & Crossmint

1. cloudflare-agents: Agent-to-agent payments using Crossmint smart wallets + x402 protocol on Cloudflare Workers
2. hello-crossmint-wallets-a2a: React + Express A2A demo using Crossmint Wallets SDK with x402 payments and direct-transfer verification
3. hello-eoa-a2a: Minimal merchant/client using A2A JS SDK with EIP-3009 authorization signing and on-chain settlement
4. ping: Express TypeScript server with x402 paywall requiring USDC payment to access /ping endpoint
5. ping-crossmint: React + Express demo showing Crossmint smart wallet integration with x402 payment protocol and API key/Email OTP signers
6. events-concierge: MCP-based autonomous agent payment demo using Cloudflare Durable Objects, Crossmint wallets, and x402 for paid API access
7. send-tweet: A2A agent that posts tweets via Twitter API v2 after verifying USDC payment using direct-transfer scheme
8. weather: Express TypeScript server with x402 paywall requiring USDC payment to access /weather?city=CITY endpoint
9. worldstore-agent↗️: XMTP AI agent for purchasing Amazon products with gasless USDC payments on Base using Claude Sonnet 4 and Crossmint integration
10. x402-ad-agent↗️: Autonomous AI bidding system where Claude-powered agents compete for advertising space using blockchain payments through x402 protocol with real-time refund-as-signal pattern