Every Agent Call Is Money You're Not Collecting

You built an MCP tool. You gave it away free. Nobody paid. You moved on. Here's what you should have done. x402-mcp. Three lines. Wrap your MCP handler. Set a price per tool call. Deploy to Vercel. Every time an agent calls your tool — it pays. $0.000001 to whatever you want. Instant USDC settlement on Base. No Stripe. No billing logic. No churn. npm install x402-mcp. Add server.paidTool. Set a price. Deploy. Done. Your tool is now a vending machine. Every agent in the world can discover and pay it. Without your involvement. The API economy just changed models. Most developers haven't noticed yet. Link in bio.