Email Spf

{
  "count": 2,
  "failed": 0,
  "results": [
    {
      "input": "github.com",
      "result": {
        "dns_lookups": 8,
        "domain": "github.com",
        "multiple_records": false,
        "over_10_lookup_limit": false,
        "parsed": {
          "all": {
            "meaning": "softfail",
            "qualifier": "~"
          },
          "includes": [
            "spf.protection.outlook.com"
          ],
          "ip4": [
            "192.30.252.0/22"
          ]
        },
        "present": true,
        "record": "v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com ... ~all",
        "warnings": []
      }
    },
    {
      "input": "…",
      "result": {
        "…": "…"
      }
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://intel.rallylive.ca/bulk/email/spf?domains=github.com%2C+example.com%2C+cloudflare.com'

# 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://intel.rallylive.ca/bulk/email/spf?domains=github.com%2C+example.com%2C+cloudflare.com' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fintel.rallylive.ca%2Fbulk%2Femail%2Fspf
const res = await pay("https://intel.rallylive.ca/bulk/email/spf?domains=github.com%2C+example.com%2C+cloudflare.com");
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://intel.rallylive.ca/bulk/email/spf?domains=github.com%2C+example.com%2C+cloudflare.com")
    print(res.status_code, res.text)