Indices

{
  "coinCount": 2,
  "data": {
    "index": {
      "createdAt": "2026-09-20T20:38:03.359863+00:00",
      "description": "AI Agents",
      "id": "21d4e2c1-b314-4eb6-99a2-99605a6b912c",
      "name": "AI Agents",
      "slug": "ai-agents"
    },
    "members": [
      {
        "ath": 3.45,
        "change24h": -0.91613,
        "change30d": 52.8926,
        "change7d": -1.3295,
        "coinId": "fetch-ai",
        "marketCap": 535134666,
        "marketCapRank": 113,
        "name": "Artificial Superintelligence Alliance",
        "price": 0.231509,
        "refreshedAt": "2026-10-02T11:31:18.324+00:00",
        "symbol": "FET",
        "totalVolume": 154761387
      },
      {
        "coinId": "example-unpriced-coin",
        "market": null
      }
    ]
  },
  "disclaimer": "Market data and analysis, not investment advice.",
  "source": "Blockchain IQ",
  "terms": "https://www.blockchainiq.co/terms"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://www.blockchainiq.co/api/x402/v1/indices/:slug'

# 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://www.blockchainiq.co/api/x402/v1/indices/:slug' \
  | 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%2Fwww.blockchainiq.co%2Fapi%2Fx402%2Fv1%2Findices%2F%3Aslug
const res = await pay("https://www.blockchainiq.co/api/x402/v1/indices/:slug");
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://www.blockchainiq.co/api/x402/v1/indices/:slug")
    print(res.status_code, res.text)