X402 Chain Reads V1 Base Reads Bundle

{
  "ok": true,
  "parts": {
    "base_eth_getbalance": {
      "chain": "base",
      "hex": "0x0",
      "method": "eth_getBalance",
      "ok": true,
      "result": 0,
      "service": "x402_chain_reads_v1.base_eth_getbalance"
    },
    "network_info_summary": {
      "chain": "ethereum",
      "hex": {
        "eth_blockNumber": "0x18f1abd",
        "eth_chainId": "0x1",
        "eth_gasPrice": "0x1ce087cd"
      },
      "method": "summary",
      "ok": true,
      "result": {
        "base_fee_per_gas_wei": 484476877,
        "block_gas_limit": 59999943,
        "block_gas_used": 22212322,
        "block_number": 26155709,
        "block_timestamp": 1791559199,
        "block_transactions": 249,
        "chain_id": 1,
        "gas_price_wei": 484476877
      },
      "service": "x402_chain_reads_v1.network_info_summary"
    }
  },
  "service": "x402_chain_reads_v1.base_reads_bundle"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://ari001.tailb4ac3a.ts.net/v1/ventures/x402_chain_reads_v1/base_reads_bundle?address=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045'

# 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://ari001.tailb4ac3a.ts.net/v1/ventures/x402_chain_reads_v1/base_reads_bundle?address=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045' \
  | 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 $0.008 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.008" });
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 $0.008 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fari001.tailb4ac3a.ts.net%2Fv1%2Fventures%2Fx402_chain_reads_v1%2Fbase_reads_bundle
const res = await pay("https://ari001.tailb4ac3a.ts.net/v1/ventures/x402_chain_reads_v1/base_reads_bundle?address=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045");
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 $0.008 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.008"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://ari001.tailb4ac3a.ts.net/v1/ventures/x402_chain_reads_v1/base_reads_bundle?address=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045")
    print(res.status_code, res.text)