X402 Top Sellers

{
  "data": {
    "howToRead": "returningBuyersFloor is the payer count of the seller's strongest listing whose …",
    "listingsRead": 35125,
    "ok": true,
    "readAt": "2026-10-09T17:24:10.841Z",
    "sellers": [
      {
        "callsPerPayer": 83.4,
        "callsSummed": 392794,
        "itsCalls": 392794,
        "listings": 1,
        "listingsWithReturningBuyers": 1,
        "networks": {},
        "payersSummed": 4710,
        "priceUsd": {},
        "rank": 1,
        "returningBuyersFloor": 4710,
        "seller": "www.ax1.vc",
        "strongestListing": "https://www.ax1.vc/api/dashboard/q-verdict/resource"
      }
    ],
    "sellersWithReturningBuyers": 499
  },
  "ok": true,
  "paid": 0.01
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://apexfaucet.xyz/api/x402/x402-top-sellers?limit=25'

# 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://apexfaucet.xyz/api/x402/x402-top-sellers?limit=25' \
  | 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%2Fapexfaucet.xyz%2Fapi%2Fx402%2Fx402-top-sellers
const res = await pay("https://apexfaucet.xyz/api/x402/x402-top-sellers?limit=25");
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://apexfaucet.xyz/api/x402/x402-top-sellers?limit=25")
    print(res.status_code, res.text)