ToolVet
78trust / 100

Calc Hat

by magent in Other

x402 APIPassing, checked 3 h ago

HAT (Lou 2008 Neurology) for sICH after stroke thrombolysis. Diabetes or glucose >200 mg/dL (1; not additive). NIHSS <15 0, 15-20 1, >20 2. CT hypodensity none 0, <1/3 MCA 1, >1/3 MCA 2 (no equals-1/3). Max 5. Collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3. Glucose in mg/dL (mmol × 18). Not a tPA withhold. magent does not assign NIHSS or read CT.

POST
https://api.magentlab.com/api/calc/hat
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
237 ms
434 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.magentlab.com/api/calc/hat

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://api.magentlab.com/api/calc/hat
content-type: application/json

{
  "items": [
    {
      "diabetes": false,
      "glucose_mg_dl": 108,
      "glucose_mmol_l": 6,
      "hypodensity": "none",
      "nihss": 10
    },
    {
      "diabetes": false,
      "glucose_mg_dl": 108,
      "glucose_mmol_l": 6,
      "hypodensity": "none",
      "nihss": 10
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 88 lines
{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Lou M, Safdar A, Mehdiratta M, Kumar S, Schlaug G, Caplan L, Searls D, Selim M",
        "doi": "10.1212/01.wnl.0000330297.58334.dd",
        "id": "lou-2008",
        "pmid": "18955684",
        "source": "Neurology. 2008;71(18):1417-1423",
        "title": "The HAT Score: a simple grading scale for predicting hemorrhage after thrombolysis"
      },
      "components": [
        {
          "diabetes": false,
          "factor": "diabetes_or_glucose",
          "points": 0,
          "present": false,
          "value": 108
        },
        {
          "factor": "nihss",
          "points": 0,
          "present": false,
          "value": 10
        },
        {
          "factor": "hypodensity",
          "points": 0,
          "present": false,
          "value": "none"
        }
      ],
      "diabetes": false,
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "hat",
      "formula_expression": "HAT = (diabetes OR baseline glucose >200 mg/dL) 1 (not additive) + NIHSS (<15 0, 15-20 1, >20 2) + hypodensity (none 0, <1/3 MCA 1, >1/3 MCA 2); Lou 2008; max 5; collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3",
      "glucose_mg_dl": 108,
      "hypodensity": "none",
      "max_score": 5,
      "nihss": 10,
      "score": 0,
      "sich_percent": 2
    },
    {
      "citation": {
        "authors": "Lou M, Safdar A, Mehdiratta M, Kumar S, Schlaug G, Caplan L, Searls D, Selim M",
        "doi": "10.1212/01.wnl.0000330297.58334.dd",
        "id": "lou-2008",
        "pmid": "18955684",
        "source": "Neurology. 2008;71(18):1417-1423",
        "title": "The HAT Score: a simple grading scale for predicting hemorrhage after thrombolysis"
      },
      "components": [
        {
          "diabetes": false,
          "factor": "diabetes_or_glucose",
          "points": 0,
          "present": false,
          "value": 108
        },
        {
          "factor": "nihss",
          "points": 0,
          "present": false,
          "value": 10
        },
        {
          "factor": "hypodensity",
          "points": 0,
          "present": false,
          "value": "none"
        }
      ],
      "diabetes": false,
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "hat",
      "formula_expression": "HAT = (diabetes OR baseline glucose >200 mg/dL) 1 (not additive) + NIHSS (<15 0, 15-20 1, >20 2) + hypodensity (none 0, <1/3 MCA 1, >1/3 MCA 2); Lou 2008; max 5; collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3",
      "glucose_mg_dl": 108,
      "hypodensity": "none",
      "max_score": 5,
      "nihss": 10,
      "score": 0,
      "sich_percent": 2
    }
  ],
  "path": "/api/calc/hat"
}

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://api.magentlab.com/api/calc/hat' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"diabetes":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hypodensity":"none","nihss":10},{"diabetes":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hypodensity":"none","nihss":10}]}'

# 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://api.magentlab.com/api/calc/hat' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"diabetes":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hypodensity":"none","nihss":10},{"diabetes":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hypodensity":"none","nihss":10}]}' \
  | 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.magentlab.com%2Fapi%2Fcalc%2Fhat&method=POST
const res = await pay("https://api.magentlab.com/api/calc/hat", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "diabetes": false,
        "glucose_mg_dl": 108,
        "glucose_mmol_l": 6,
        "hypodensity": "none",
        "nihss": 10
      },
      {
        "diabetes": false,
        "glucose_mg_dl": 108,
        "glucose_mmol_l": 6,
        "hypodensity": "none",
        "nihss": 10
      }
    ]
  }),
});
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://api.magentlab.com/api/calc/hat",
        json={
            "items": [
                {
                    "diabetes": False,
                    "glucose_mg_dl": 108,
                    "glucose_mmol_l": 6,
                    "hypodensity": "none",
                    "nihss": 10,
                },
                {
                    "diabetes": False,
                    "glucose_mg_dl": 108,
                    "glucose_mmol_l": 6,
                    "hypodensity": "none",
                    "nihss": 10,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

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