Route Recommend

{
  "formula_version": "rank_v1",
  "query": "check SPF DKIM DMARC for a domain",
  "recommendations": [
    {
      "catalog_price_usd": 0.01,
      "live_quote": [
        {
          "amount": "10000",
          "network": "eip155:8453",
          "scheme": "exact"
        }
      ],
      "method": "GET",
      "payers_30d": 9,
      "provider": "third-party",
      "rank": 1,
      "resource_url": "https://email-auth.use.x402atlas.com/check",
      "why": [
        "close match to the request (key words: dmarc, spf, dkim, domain)",
        "9 paying wallets in the last 30 days",
        "$0.01 per call",
        "passed a live payment-challenge check just now (223 ms)"
      ]
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://router.netintel.dev/route/recommend?q=check+SPF+DKIM+DMARC+for+a+domain'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://router.netintel.dev/route/recommend?q=check+SPF+DKIM+DMARC+for+a+domain' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

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

// Pays at most $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Frouter.netintel.dev%2Froute%2Frecommend
const res = await pay("https://router.netintel.dev/route/recommend?q=check+SPF+DKIM+DMARC+for+a+domain");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://router.netintel.dev/route/recommend?q=check+SPF+DKIM+DMARC+for+a+domain")
    print(res.status_code, res.text)