Records Checked

{
  "citations": {
    "agency": "National Weather Service",
    "officialSiteUrl": "https://www.weather.gov",
    "retrievedAtUtc": "2026-08-30T18:00:00.000Z",
    "sourceUrl": "https://api.weather.gov/alerts/active"
  },
  "grades": [],
  "official": {
    "cadence": "hourly",
    "record_id": "nws_alerts_2026-08-30T18",
    "schema": "paylyte.ingest.us_official_records.v1",
    "sku": "nws_alerts",
    "source_url": "https://api.weather.gov/alerts/active",
    "status": "final",
    "vintage": "2026-08-30T18"
  },
  "product": "records.checked",
  "proofOfOutcome": {
    "fileSha256Hex": "fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210",
    "note": "Paylyte hashes the official source and stamps that hash on Bitcoin. That is Proof of Outcome for Official checked records.",
    "payloadSha256Hex": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
  },
  "recordId": "nws_alerts_2026-08-30T18",
  "tier": "records",
  "whatWasProven": {
    "dirtyCopy": "A dirty copy is any other alert list: a model summary, a tweet, or a rewritten table. Compare that copy to this official hash. If they differ, the copy is not the NWS feed.",
    "note": "You buy not getting lied to. You do not buy a stamp on a free PDF.",
    "official": "The official source is the agency file at the official URL. Its hash is file_sha256_hex. The sealed record hash is payload_sha256_hex."
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.paylyte.ai/v1/data/records/checked?record_id=nws_alerts_2026-08-30T18'

# 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://api.paylyte.ai/v1/data/records/checked?record_id=nws_alerts_2026-08-30T18' \
  | 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 $0.25 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.25" });
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 $0.25 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.paylyte.ai%2Fv1%2Fdata%2Frecords%2Fchecked
const res = await pay("https://api.paylyte.ai/v1/data/records/checked?record_id=nws_alerts_2026-08-30T18");
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 $0.25 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.25"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.paylyte.ai/v1/data/records/checked?record_id=nws_alerts_2026-08-30T18")
    print(res.status_code, res.text)