Entities Balance History

{
  "data": {
    "address": "0xf977814e90da44bfa03b6295a0616a897441acec",
    "chainId": 1,
    "granularity": "day",
    "points": [
      {
        "balanceWei": "539595914555870218390945",
        "blockNumber": 26034715,
        "changeWei": "-395468990561863",
        "timestamp": 1790035200,
        "txCount": 5,
        "usd": {
          "priceCarried": false,
          "priceHour": 1790118000,
          "priceUsd": 2752.12810717,
          "valueUsd": 1485037082.963312
        }
      }
    ],
    "summary": {
      "endBalanceWei": "439595910247318790802490",
      "firstActivityTimestamp": 1562683760,
      "lastActivityTimestamp": 1790836655,
      "maxBalanceWei": "539595914951339208952808",
      "minBalanceWei": "439595910247318790802490",
      "startBalanceWei": "539595914951339208952808",
      "totalInflowWei": "0",
      "totalOutflowWei": "100000004704020418150318",
      "totalTxCount": 50
    }
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/balance-history?limit=10'

# 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://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/balance-history?limit=10' \
  | 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%2Fmpp.tracefast.xyz%2Fapi%2Fv1%2Fchains%2F1%2Fentities%2F%3Aaddress%2Fbalance-history
const res = await pay("https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/balance-history?limit=10");
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://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/balance-history?limit=10")
    print(res.status_code, res.text)