ToolVet
77trust / 100

Filter

by Kertivo Logs in Developer tools

x402 APIPassing, checked 57 min ago

Filter a JSON/NDJSON event log by field/operator/time range; returns matching events. Use when an agent needs to pull matching rows (thresholds, equality, substring, threshold crossings, time windows) out of a log or metrics event list. Body: {events:[...]|"<ndjson>", filter:{field,op,value?,direction?,timeField?,from?,to?,limit?}}. Ops: gt,gte,lt,lte,eq,ne,contains,crosses_threshold. Free demo at POST /demo; docs at /openapi.json.

POST
https://logfilter.hectichustle.workers.dev/filter
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
433 ms
801 ms slowest 5%
Last check
Passed
57 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 · Watch with other listings

How to call it

POST https://logfilter.hectichustle.workers.dev/filter

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://logfilter.hectichustle.workers.dev/filter
content-type: application/json

{
  "events": [
    {
      "cpu": 40,
      "timestamp": "2026-01-01T00:00:00Z"
    },
    {
      "cpu": 95,
      "timestamp": "2026-01-01T00:01:00Z"
    }
  ],
  "filter": {
    "field": "cpu",
    "op": "gt",
    "value": 90
  }
}

Parameters

ParameterTypeRequiredDescription
eventsarray or stringYesArray of event objects, or an NDJSON string (one JSON object per line)
filterobjectYes

Example response

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

{
  "counts": {
    "inTimeRange": 2,
    "input": 2,
    "matched": 1,
    "returned": 1,
    "truncated": false
  },
  "events": [
    {
      "cpu": 95,
      "timestamp": "2026-01-01T00:01:00Z"
    }
  ]
}

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://logfilter.hectichustle.workers.dev/filter' \
  -H 'content-type: application/json' \
  --data-raw '{"events":[{"cpu":40,"timestamp":"2026-01-01T00:00:00Z"},{"cpu":95,"timestamp":"2026-01-01T00:01:00Z"}],"filter":{"field":"cpu","op":"gt","value":90}}'

# 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://logfilter.hectichustle.workers.dev/filter' \
  -H 'content-type: application/json' \
  --data-raw '{"events":[{"cpu":40,"timestamp":"2026-01-01T00:00:00Z"},{"cpu":95,"timestamp":"2026-01-01T00:01:00Z"}],"filter":{"field":"cpu","op":"gt","value":90}}' \
  | 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%2Flogfilter.hectichustle.workers.dev%2Ffilter&method=POST
const res = await pay("https://logfilter.hectichustle.workers.dev/filter", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "events": [
      {
        "cpu": 40,
        "timestamp": "2026-01-01T00:00:00Z"
      },
      {
        "cpu": 95,
        "timestamp": "2026-01-01T00:01:00Z"
      }
    ],
    "filter": {
      "field": "cpu",
      "op": "gt",
      "value": 90
    }
  }),
});
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://logfilter.hectichustle.workers.dev/filter",
        json={
            "events": [
                {
                    "cpu": 40,
                    "timestamp": "2026-01-01T00:00:00Z",
                },
                {
                    "cpu": 95,
                    "timestamp": "2026-01-01T00:01:00Z",
                },
            ],
            "filter": {
                "field": "cpu",
                "op": "gt",
                "value": 90,
            },
        },
    )
    print(res.status_code, res.text)

Security scan

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