How AuraGate works

# Step 1 — Hit the endpoint, receive 402
curl -i https://auragate.app/api/premium/oracle-check -H "x-payer: 0xYourWalletAddress"

# Step 2 — Sign USDC authorization and retry
curl -X GET https://auragate.app/api/premium/oracle-check \
  -H "X-PAYMENT: <signed-eip3009-authorization>" \
  -H "X-PAYER: 0xYourWalletAddress"
# → 200 OK + JSON data + x-receipt-id

// my-agent.mjs — buy from AuraGate (Node 18+)
const endpoint = "https://auragate.app/api/premium/oracle-check";

// Step 1: first call → 402
const first = await fetch(endpoint);
console.log("Status:", first.status); // 402

// Step 2: pay via Circle Gateway, auto-retry
const { GatewayClient } = await import("@circle-fin/x402-batching/client");
const gw = new GatewayClient({ chain: "arcTestnet", privateKey: process.env.BUYER_PRIVATE_KEY });
await gw.deposit("0.10");             // fund gateway once
const { data } = await gw.pay(endpoint);
console.log("Data:", data);

const catalog = await fetch("https://auragate.app/api/agent").then(r => r.json());
let spent = 0, budget = 0.10;
for (const svc of catalog.services) {
  if (spent + Number(svc.price.amount) > budget) continue;
  const { data } = await gw.pay(svc.url);
  console.log(svc.name, "→", data);
  spent += Number(svc.price.amount);
}

// x402 endpoint — Next.js / Express / any HTTP server
export async function GET(req) {
  if (!req.headers.get("x-payment")) {
    return Response.json({
      x402Version: 2,
      accepts: [{
        scheme: "exact",
        network: "eip155:5042002",       // Arc Testnet
        asset: "0x<USDC-on-Arc>",
        amount: "2000",                   // $0.002 (6 decimals)
        payTo: "0xYourSellerWallet",
        maxTimeoutSeconds: 60
      }],
      error: "Payment required"
    }, { status: 402 });
  }
  return Response.json({ result: "your data here" });
}

curl -X POST https://auragate.app/api/services/probe \
  -H "Content-Type: application/json" \
  -d '{ "url": "https://my-api.com/endpoint", "method": "GET", "price": "0.002" }'
# → { "ok": true, "checks": [ ... ] }

curl -X POST https://auragate.app/api/services \
  -H "Content-Type: application/json" \
  -d '{
    "name": "My Weather API",
    "description": "Live weather, pay-per-call.",
    "category": "data",
    "price": "0.002",
    "method": "GET",
    "sellerName": "MyCompany",
    "sellerAddress": "0xYourWalletAddress",
    "externalUrl": "https://my-api.com/x402/weather",
    "docsUrl": "https://my-api.com/docs",
    "tags": ["weather", "realtime"],
    "sampleResponse": { "city": "Hanoi", "temp": 31 }
  }'