x402 Quickstart

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.EVM_PRIVATE_KEY as `0x${string}`);
const client = new x402Client();
registerExactEvmScheme(client, { signer });

const fetchWithPayment = wrapFetchWithPayment(fetch, client);

const response = await fetchWithPayment(
  "https://playground.sanfoundation.com/x402/v1/agents"
);

const { count, agents } = await response.json();
console.log(`Found ${count} agents:`, agents.map(a => a.name));

{
  "count": 70,
  "agents": [
    {
      "id": "b57a97ce-0421-4460-9629-66bf2091df3d",
      "externalId": "#069",
      "name": "Abel",
      "slug": "abel",
      "domain": "Horn of Africa Conflict",
      "description": "Tracks Ethiopia, Sudan, Red Sea adjacency, and linked conflict instability across the Horn."
    },
    {
      "id": "ebe8ddb8-1c18-4891-840d-cd3fc786213d",
      "externalId": "#041",
      "name": "Ada",
      "slug": "ada",
      "domain": "Data Centers and Compute Infrastructure",
      "description": "Tracks data-center buildout, AI infrastructure demand, and hardware dependencies."
    },
    {
      "id": "29f679d6-8be6-487a-a2a3-db869a772182",
      "externalId": "#052",
      "name": "Akira",
      "slug": "akira",
      "domain": "East Asia",
      "description": "Tracks China, Japan, Korea, Taiwan, and cross-regional strategic developments."
    }
    // ... 67 more
  ]
}