ToolVet
77trust / 100

Crypto Explain Tx

by ISHOB in Onchain & crypto

x402 APIPassing, checked 1 h ago

Explain any mined transaction in plain English: what happened (swap, transfer, approval, NFT buy/sell/mint, wrap, contract deploy, failed + revert reason), the sender's net token changes with USD values, every token and native-coin movement, approvals granted, the function called (named from the verified ABI or a signature database, with decoded arguments) and the fee. Rule-based, no AI. Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain.

GET
https://api.ishob.com/v1/crypto/explain-tx
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
593 ms
1.0 s slowest 5%
Last check
Passed
1 h 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 · Watch with other listings

How to call it

GET https://api.ishob.com/v1/crypto/explain-tx

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.

GET https://api.ishob.com/v1/crypto/explain-tx?chain=base&hash=0x08ee682f9d01628aa8397e1ecc0c37cf47e468d67f711f3bc7e94addba0efffe

Parameters

ParameterTypeRequiredDescription
chainstringYes One of: ethereum, base, arbitrum, optimism, polygon, bsc.
hashstringYesTransaction hash (0x + 64 hex)

Example response

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

{
  "action": "swap",
  "function": {
    "name": "execute(bytes,bytes[])",
    "source": "verified ABI (Sourcify)"
  },
  "sender_changes": [
    {
      "amount": 134.2189,
      "direction": "out",
      "symbol": "XRC"
    },
    {
      "amount": 0.001633,
      "direction": "in",
      "symbol": "ETH",
      "usd": 4.1
    }
  ],
  "status": "success",
  "summary": "On Base at 2026-10-14 04:32 UTC: 0x09c1…d159 swapped 134.2189 XRC for 0.001633 ETH ($4.10) via UniversalRouter through 1 pool. Fee: 0.000001001 ETH (<$0.01)."
}

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 'https://api.ishob.com/v1/crypto/explain-tx?chain=base&hash=0x08ee682f9d01628aa8397e1ecc0c37cf47e468d67f711f3bc7e94addba0efffe'

# 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://api.ishob.com/v1/crypto/explain-tx?chain=base&hash=0x08ee682f9d01628aa8397e1ecc0c37cf47e468d67f711f3bc7e94addba0efffe' \
  | 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%2Fapi.ishob.com%2Fv1%2Fcrypto%2Fexplain-tx
const res = await pay("https://api.ishob.com/v1/crypto/explain-tx?chain=base&hash=0x08ee682f9d01628aa8397e1ecc0c37cf47e468d67f711f3bc7e94addba0efffe");
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.get("https://api.ishob.com/v1/crypto/explain-tx?chain=base&hash=0x08ee682f9d01628aa8397e1ecc0c37cf47e468d67f711f3bc7e94addba0efffe")
    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
1 h agoPassed402593 ms$0.005
5 h agoPassed402135 ms$0.005
9 h agoPassed4021.0 s$0.005
13 h agoPassed402818 ms$0.005
18 h agoPassed402847 ms$0.005
Show 5 older checks
22 h agoPassed402550 ms$0.005
26 h agoPassed402788 ms$0.005
30 h agoPassed402522 ms$0.005
35 h agoPassed402765 ms$0.005
45 h agoPassed40237 ms$0.005