Records Purchase

{
  "record": {
    "applicability": null,
    "citation": null,
    "document_type": null,
    "evidence": [],
    "feed_id": "bc-childcare",
    "fields": {
      "action_required": null,
      "change_from_previous": null,
      "deadline": null,
      "effective_at": null,
      "penalty_exposure": null,
      "related_ids": null
    },
    "id": "83f5c7ee8bb0aae86e47cd17f3285cbe",
    "jurisdiction": null,
    "notice_id": null,
    "rule_action": null,
    "source": {
      "checked_at": null,
      "name": null,
      "published_at": null,
      "updated_at": null,
      "url": null
    },
    "sponsored": null,
    "summary": null,
    "tags": [],
    "title": "Example record; values depend on the purchased source"
  },
  "schema_version": "agent-record/v1",
  "scope": "current_version"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://bcchildcare.getregisters.com/api/v1/records/:rid/purchase'

# 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://bcchildcare.getregisters.com/api/v1/records/:rid/purchase' \
  | 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%2Fbcchildcare.getregisters.com%2Fapi%2Fv1%2Frecords%2F%3Arid%2Fpurchase
const res = await pay("https://bcchildcare.getregisters.com/api/v1/records/:rid/purchase");
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://bcchildcare.getregisters.com/api/v1/records/:rid/purchase")
    print(res.status_code, res.text)