ToolVet
80trust / 100

Kya

by Citiview Agent Market in Onchain & crypto

x402 APIPassing, checked 40 min ago

Know Your Agent: trust check on an agent's wallet before you transact with it. x402 payment history matched against every seller in Coinbase's x402 directory (payments, USDC spent, sellers, last payment), wallet age, smart wallet or key, balances, OFAC sanctions screen, listed seller status, and a risk score with a plain verdict.

GET
https://agents.citiviewgroup.com/v1/kya
Price
$0.009
per call in USDC
Uptime
100%
last 30 days
Response time
58 ms
94 ms slowest 5%
Last check
Passed
40 min ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://agents.citiviewgroup.com/v1/kya

Each call costs $0.009 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://agents.citiviewgroup.com/v1/kya?wallet=0xfA61DfF49eA196a2ec823bc75aFBd648321D3526

Parameters

ParameterTypeRequiredDescription
walletstringYesAgent wallet address (Base)

Example response

The provider's example. We can't check it without paying.

{
  "risk_score": 10,
  "verdict": "established agent wallet",
  "x402_buyer": {
    "distinct_sellers": 1,
    "payments_found": 120,
    "usd_paid": 0.6
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.009.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://agents.citiviewgroup.com/v1/kya?wallet=0xfA61DfF49eA196a2ec823bc75aFBd648321D3526'

# 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://agents.citiviewgroup.com/v1/kya?wallet=0xfA61DfF49eA196a2ec823bc75aFBd648321D3526' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.009 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.009" });
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 $0.009 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagents.citiviewgroup.com%2Fv1%2Fkya
const res = await pay("https://agents.citiviewgroup.com/v1/kya?wallet=0xfA61DfF49eA196a2ec823bc75aFBd648321D3526");
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.009 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.009"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://agents.citiviewgroup.com/v1/kya?wallet=0xfA61DfF49eA196a2ec823bc75aFBd648321D3526")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
40 min agoPassed40294 ms$0.009
5 h agoPassed40287 ms$0.009
9 h agoPassed40258 ms$0.009
13 h agoPassed40275 ms$0.009
18 h agoPassed40255 ms$0.009
Show 1 older checks
27 h agoPassed40256 ms$0.01

History

15 Oct 2026Price changed from $0.01 to $0.009