ToolVet
77trust / 100

Checks Service

by Annalist in Onchain & crypto

x402 APIPassing, checked 2 h ago

Use before paying an x402 service: independent checks by host or URL. Uptime and latency from repeated unpaid probes, whether the quoted price and payout wallet match the listing, real on-chain usage over 30 days with fake volume removed (self-funded payers, crawler bots, one-wallet dominance), test purchases and domain age, with a grade and reasons. Rankings are never for sale. Signed.

GET https://api.annalist.dev/v1/checks/service

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime
100%
Response time
527 ms typical, 532 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

GET https://api.annalist.dev/v1/checks/service

Each call costs $0.01 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.annalist.dev/v1/checks/service?host=api.annalist.dev

Parameters

ParameterTypeRequiredDescription
hoststringNohost name, for example api.example.com
urlstringNoor any URL on the service

Example response

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

{
  "data": {
    "flags": [],
    "grade": "B",
    "host": "api.example.com",
    "reasons": [
      "quoted price matches listing"
    ],
    "reliability": {
      "up_share_7d": 0.98
    },
    "usage": {
      "organic_payers_30d": 41
    }
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.annalist.dev/v1/checks/service?host=api.annalist.dev'

# 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.annalist.dev/v1/checks/service?host=api.annalist.dev' \
  | 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 $0.01 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.annalist.dev%2Fv1%2Fchecks%2Fservice
const res = await pay("https://api.annalist.dev/v1/checks/service?host=api.annalist.dev");
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 $0.01 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.get("https://api.annalist.dev/v1/checks/service?host=api.annalist.dev")
    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
2 h agoPassed402653 ms$0.01
6 h agoPassed402527 ms$0.01
10 h agoPassed402532 ms$0.01
14 h agoPassed402501 ms$0.01
23 h agoPassed40243 ms$0.01