Token Check

{
  "chain": "base",
  "chain_id": 8453,
  "contract": {
    "is_contract": true,
    "is_eip1967_proxy": false,
    "owner_renounced": true
  },
  "disclaimer": "Informational on-chain data only. Not financial, investment, legal or tax advice. Heuristic flags can be wrong; do your own research.",
  "flags": [],
  "holders": {
    "holders_count": 948126,
    "top10_share_ex_pools_burn": 0.318,
    "top1_share_ex_pools_burn": 0.1166
  },
  "liquidity": {
    "best_estimate_usd": 2618438.83,
    "onchain_approx_liquidity_usd": 1779451.93
  },
  "risk_level": "low",
  "schema_version": "1.0",
  "status": "ok",
  "token": "0x532f27101965dd16442E59d40670FaF5eBB142E4",
  "token_info": {
    "decimals": 18,
    "name": "Brett",
    "symbol": "BRETT"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.x402risk.com/v1/token-check' \
  -H 'content-type: application/json' \
  --data-raw '{"token":"0x532f27101965dd16442E59d40670FaF5eBB142E4"}'

# 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 - -X POST 'https://api.x402risk.com/v1/token-check' \
  -H 'content-type: application/json' \
  --data-raw '{"token":"0x532f27101965dd16442E59d40670FaF5eBB142E4"}' \
  | 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%2Fapi.x402risk.com%2Fv1%2Ftoken-check&method=POST
const res = await pay("https://api.x402risk.com/v1/token-check", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "token": "0x532f27101965dd16442E59d40670FaF5eBB142E4"
  }),
});
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.post(
        "https://api.x402risk.com/v1/token-check",
        json={
            "token": "0x532f27101965dd16442E59d40670FaF5eBB142E4",
        },
    )
    print(res.status_code, res.text)