ToolVet
75trust / 100

Wallet Snapshot

by stall-row in Onchain & crypto

x402 APIPassing, checked 4 min ago

Snapshot one Base wallet in a single call: ETH balance, top token holdings, first and last activity, and outgoing transaction count. Use this when an agent needs a wallet's shape before deciding to pay, trust, or transact with it. Explorer fields that cannot be supplied come back marked unknown, never invented.

POST
https://stall-row-production.up.railway.app/v1/wallet-snapshot
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
609 ms
1.6 s slowest 5%
Last check
Passed
4 min ago, next in 28 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://stall-row-production.up.railway.app/v1/wallet-snapshot

Each call costs $0.005 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.

POST https://stall-row-production.up.railway.app/v1/wallet-snapshot
content-type: application/json

{
  "address": "0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F"
}

Parameters

ParameterTypeRequiredDescription
addressstringYes

Example response

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

Example response, 26 lines
{
  "address": "0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F",
  "eth_balance": "0.0042",
  "eth_balance_source": "blockscout",
  "eth_balance_wei": "4200000000000000",
  "first_activity": "2025-11-02T14:03:11.000000Z",
  "is_contract": false,
  "last_activity": "2026-10-20T09:41:52.000000Z",
  "note": "Fields marked unknown could not be supplied by their source.",
  "outgoing_tx_count_nonce": 137,
  "sources": {
    "activity_window": "blockscout",
    "eth_balance": "blockscout",
    "token_balances": "blockscout"
  },
  "token_balances": [
    {
      "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "balance": "12.5",
      "balance_raw": "12500000",
      "decimals": 6,
      "name": "USD Coin",
      "symbol": "USDC"
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://stall-row-production.up.railway.app/v1/wallet-snapshot' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F"}'

# 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://stall-row-production.up.railway.app/v1/wallet-snapshot' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F"}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fstall-row-production.up.railway.app%2Fv1%2Fwallet-snapshot&method=POST
const res = await pay("https://stall-row-production.up.railway.app/v1/wallet-snapshot", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "address": "0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F"
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://stall-row-production.up.railway.app/v1/wallet-snapshot",
        json={
            "address": "0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F",
        },
    )
    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
4 min agoPassed402609 ms$0.005
6 h agoPassed402542 ms$0.005
11 h agoPassed4021.6 s$0.005