Route and execute (max tier)

Describe a task (or name a slug) and the Smart Order Router resolves the best-matching tool and RUNS it in the same call — flat $0.55 covering any tool listed at $0.5 or less, from THIS host's catalog or any external x402 seller in the open index (paid over x402 on your behalf, result relayed). One payment, one request, result + receipt. /api/route quotes which tier a task needs; pricier tools return a self-correcting 409 with their direct route.

Input

Example output

{
  "receipt": {
    "slug": "hash",
    "route": "POST /api/hash",
    "underlyingPriceUsd": 0.001,
    "paidUsd": 0.55,
    "routingFeeUsd": 0.009,
    "seller": "internal",
    "resolvedBy": "slug",
    "ts": "2026-07-10T00:00:00.000Z",
    "callRef": "sha256:…  (recomputable: sha256 of {\"nonce\":<payment authorization nonce>,\"slug\":…,\"ts\":…} — null on nonce-less calls)"
  },
  "result": {
    "algo": "sha256",
    "hex": "…",
    "base64": "…"
  }
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/route/execute-max \
  -H "Content-Type: application/json" \
  -d '{"slug":"hash","params":{"text":"agent402","algo":"sha256"}}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

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

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/route/execute-max", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "slug": "hash",
    "params": {
      "text": "agent402",
      "algo": "sha256"
    }
  }),
});

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