Add Trust Verification to Your AI Agent in 3 Lines of Code

The Problem: Who Just Called Your API? AI agents are calling other agents' APIs now. No browser session. No OAuth consent screen. No CAPTCHA. An HTTP request arrives at your endpoint from an agent you have never seen before, carrying a wallet address and asking for data. How do you know it is legitimate? Protocols like x402 solve the payment question. An agent proves it can pay by signing a USDC transaction on Base. But payment alone does not prove identity. A fresh wallet with $5 in it can pay for your API just fine. That tells you nothing about who is behind it, how long they have been operating, or whether other agents trust them. You need a trust layer. And you can add one to an Express API in 3 lines. Let me show you. The 3 Lines Here is a standard Express endpoint with no verification: import express from ' express ' ; const app = express (); app . get ( ' /api/data ' , ( req , res ) => { res . json ({ data : ' anyone can access this ' }); }); app . listen ( 3000 ); Now, the prot