ToolVet
80trust / 100

Fleet Anomaly

by iot.halowerk.com in Other

x402 APIPassing, checked 2 h ago

Computes cohort median, median absolute deviation and robust z-scores for one numeric reading per device. A caller-selected threshold determines flags. It detects cross-sectional outliers only and does not diagnose root cause or learn temporal behavior.

POST https://iot.halowerk.com/v1/fleet-anomaly

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime
100%
Response time
125 ms typical, 180 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

POST https://iot.halowerk.com/v1/fleet-anomaly

Each call costs $0.003 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://iot.halowerk.com/v1/fleet-anomaly
content-type: application/json

{
  "readings": [
    {
      "device_id": "pump-1",
      "value": 10.1
    },
    {
      "device_id": "pump-2",
      "value": 9.9
    },
    {
      "device_id": "pump-3",
      "value": 10.2
    },
    {
      "device_id": "pump-4",
      "value": 18.5
    }
  ],
  "threshold": 3.5
}

Parameters

ParameterTypeRequiredDescription
readingsarray of objectYes
thresholdnumberNoAbsolute robust z-score threshold.

Example response

The listing has no example response.

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://iot.halowerk.com/v1/fleet-anomaly' \
  -H 'content-type: application/json' \
  --data-raw '{"readings":[{"device_id":"pump-1","value":10.1},{"device_id":"pump-2","value":9.9},{"device_id":"pump-3","value":10.2},{"device_id":"pump-4","value":18.5}],"threshold":3.5}'

# 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://iot.halowerk.com/v1/fleet-anomaly' \
  -H 'content-type: application/json' \
  --data-raw '{"readings":[{"device_id":"pump-1","value":10.1},{"device_id":"pump-2","value":9.9},{"device_id":"pump-3","value":10.2},{"device_id":"pump-4","value":18.5}],"threshold":3.5}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fiot.halowerk.com%2Fv1%2Ffleet-anomaly&method=POST
const res = await pay("https://iot.halowerk.com/v1/fleet-anomaly", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "readings": [
      {
        "device_id": "pump-1",
        "value": 10.1
      },
      {
        "device_id": "pump-2",
        "value": 9.9
      },
      {
        "device_id": "pump-3",
        "value": 10.2
      },
      {
        "device_id": "pump-4",
        "value": 18.5
      }
    ],
    "threshold": 3.5
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://iot.halowerk.com/v1/fleet-anomaly",
        json={
            "readings": [
                {
                    "device_id": "pump-1",
                    "value": 10.1,
                },
                {
                    "device_id": "pump-2",
                    "value": 9.9,
                },
                {
                    "device_id": "pump-3",
                    "value": 10.2,
                },
                {
                    "device_id": "pump-4",
                    "value": 18.5,
                },
            ],
            "threshold": 3.5,
        },
    )
    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 agoPassed402143 ms$0.003
6 h agoPassed402101 ms$0.003
10 h agoPassed402128 ms$0.003
14 h agoPassed402176 ms$0.003
18 h agoPassed402119 ms$0.003
22 h agoPassed402137 ms$0.003
26 h agoPassed402180 ms$0.003
30 h agoPassed402137 ms$0.003
33 h agoPassed402164 ms$0.003
37 h agoPassed402124 ms$0.003
41 h agoPassed402123 ms$0.003
44 h agoPassed402125 ms$0.003
2 days agoPassed402135 ms$0.003
2 days agoPassed402131 ms$0.003
2 days agoPassed402189 ms$0.003