ToolVet
75trust / 100

Feedback

by Rate a call you paid for in Onchain & crypto

x402 APIPassing, checked 5 h ago

Tell this server whether a call you paid for delivered what it promised. Bound to the receipt: give it the settlement transaction from that call's PAYMENT-RESPONSE (or Payment-Receipt) header and a verdict of "good" or "bad", and only the wallet the ledger records as having paid for that exact call can write it - so a rating here is always a real customer about a real purchase. One verdict per settlement transaction (sending another replaces yours, it never stacks).

POST
https://agent402.tools/api/feedback
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
321 ms
449 ms slowest 5%
Last check
Passed
5 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

POST https://agent402.tools/api/feedback

Each call costs $0.001 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://agent402.tools/api/feedback
content-type: application/json

{
  "tx": "0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb",
  "verdict": "good"
}

Parameters

ParameterTypeRequiredDescription
reasonstringNoWhat happened, in your own words. Optional on "good", required on "bad" (10 characters minimum, 1000 maximum). Stored for the operator, never published.
txstringYesSettlement transaction of the call you are rating, as carried in that response's PAYMENT-RESPONSE (x402) or Payment-Receipt (MPP) header.
verdictstringYes"good" (it delivered what it promised) or "bad" (it did not).

Example response

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

{
  "amountUsd": 0.01,
  "item": "crypto-price",
  "note": "responseSha256 is sha256 over the exact JSON bytes that call returned. It identifies the answer your verdict is about.",
  "recorded": true,
  "replaced": false,
  "responseSha256": "7d2a9b1c4e6f8a0b2c4d6e8f0a1b3c5d7e9f1a3b5c7d9e1f3a5b7c9d1e3f5a7b",
  "settledAt": "2026-09-03T15:16:06.000Z",
  "settlementTx": "0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb",
  "verdict": "good"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://agent402.tools/api/feedback' \
  -H 'content-type: application/json' \
  --data-raw '{"tx":"0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb","verdict":"good"}'

# 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://agent402.tools/api/feedback' \
  -H 'content-type: application/json' \
  --data-raw '{"tx":"0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb","verdict":"good"}' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Ffeedback&method=POST
const res = await pay("https://agent402.tools/api/feedback", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "tx": "0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb",
    "verdict": "good"
  }),
});
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://agent402.tools/api/feedback",
        json={
            "tx": "0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb",
            "verdict": "good",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
5 h agoPassed402322 ms$0.001
10 h agoPassed402305 ms$0.001
15 h agoPassed402316 ms$0.001
20 h agoPassed402350 ms$0.001
25 h agoPassed402449 ms$0.001
Show 10 older checks
30 h agoPassed402342 ms$0.001
34 h agoPassed402321 ms$0.001
39 h agoPassed402304 ms$0.001
44 h agoPassed402255 ms$0.001
2 days agoPassed402301 ms$0.001
2 days agoPassed402373 ms$0.001
2 days agoPassed402329 ms$0.001
3 days agoPassed402349 ms$0.001
3 days agoPassed402333 ms$0.001
3 days agoPassed402320 ms$0.001