ToolVet
68trust / 100

Calc Heaven

by magent in Security & trust

x402 APIFailing, checked 3 h ago

Davis 2017 HEAVEN criteria from six caller-assigned flags: hypoxemia (SpO2 ≤93% at initial laryngoscopy as assigned), extremes of size (pediatric ≤8 years or clinical obesity as assigned), anatomic challenges, vomit/blood/fluid, exsanguination, and limited neck mobility. high_risk iff any is true; criteria_met is the count of true flags (0-6); low_risk iff none. Not an intubation order. magent does not measure SpO2 or examine the airway. Not Mallampati, not EGRI.

POST
https://api.magentlab.com/api/calc/heaven
Price
$0.007
per call in USDC
Uptime
94.1%
last 30 days
Response time
156 ms
401 ms slowest 5%
Last check
Failed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 3 h ago: Timed out

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

How to call it

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

Each call costs $0.007 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/heaven
content-type: application/json

{
  "items": [
    {
      "anatomic_challenges": false,
      "exsanguination": false,
      "extremes_of_size": false,
      "hypoxemia": false,
      "neck_mobility_limited": false,
      "vomit_blood_fluid": false
    },
    {
      "anatomic_challenges": false,
      "exsanguination": false,
      "extremes_of_size": false,
      "hypoxemia": false,
      "neck_mobility_limited": false,
      "vomit_blood_fluid": false
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 98 lines
{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Davis DP, Olvera DJ",
        "doi": "10.1016/j.amj.2017.04.001",
        "id": "davis-2017",
        "pmid": "28739243",
        "source": "Air Med J. 2017;36(4):195-197",
        "title": "HEAVEN Criteria: Derivation of a New Difficult Airway Prediction Tool"
      },
      "criteria": [
        {
          "factor": "hypoxemia",
          "met": false
        },
        {
          "factor": "extremes_of_size",
          "met": false
        },
        {
          "factor": "anatomic_challenges",
          "met": false
        },
        {
          "factor": "vomit_blood_fluid",
          "met": false
        },
        {
          "factor": "exsanguination",
          "met": false
        },
        {
          "factor": "neck_mobility_limited",
          "met": false
        },
        {
          "factor": "high_risk_any",
          "met": false
        }
      ],
      "criteria_met": 0,
      "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": "heaven",
      "formula_expression": "high_risk iff hypoxemia or extremes_of_size or anatomic_challenges or vomit_blood_fluid or exsanguination or neck_mobility_limited; low_risk iff not high_risk; criteria_met is the count of those six flags that are true (Davis 2017 HEAVEN; high_risk iff any of six caller-assigned flags)",
      "high_risk": false,
      "low_risk": true
    },
    {
      "citation": {
        "authors": "Davis DP, Olvera DJ",
        "doi": "10.1016/j.amj.2017.04.001",
        "id": "davis-2017",
        "pmid": "28739243",
        "source": "Air Med J. 2017;36(4):195-197",
        "title": "HEAVEN Criteria: Derivation of a New Difficult Airway Prediction Tool"
      },
      "criteria": [
        {
          "factor": "hypoxemia",
          "met": false
        },
        {
          "factor": "extremes_of_size",
          "met": false
        },
        {
          "factor": "anatomic_challenges",
          "met": false
        },
        {
          "factor": "vomit_blood_fluid",
          "met": false
        },
        {
          "factor": "exsanguination",
          "met": false
        },
        {
          "factor": "neck_mobility_limited",
          "met": false
        },
        {
          "factor": "high_risk_any",
          "met": false
        }
      ],
      "criteria_met": 0,
      "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": "heaven",
      "formula_expression": "high_risk iff hypoxemia or extremes_of_size or anatomic_challenges or vomit_blood_fluid or exsanguination or neck_mobility_limited; low_risk iff not high_risk; criteria_met is the count of those six flags that are true (Davis 2017 HEAVEN; high_risk iff any of six caller-assigned flags)",
      "high_risk": false,
      "low_risk": true
    }
  ],
  "path": "/api/calc/heaven"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.007.

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/heaven' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"anatomic_challenges":false,"exsanguination":false,"extremes_of_size":false,"hypoxemia":false,"neck_mobility_limited":false,"vomit_blood_fluid":false},{"anatomic_challenges":false,"exsanguination":false,"extremes_of_size":false,"hypoxemia":false,"neck_mobility_limited":false,"vomit_blood_fluid":false}]}'

# 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/heaven' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"anatomic_challenges":false,"exsanguination":false,"extremes_of_size":false,"hypoxemia":false,"neck_mobility_limited":false,"vomit_blood_fluid":false},{"anatomic_challenges":false,"exsanguination":false,"extremes_of_size":false,"hypoxemia":false,"neck_mobility_limited":false,"vomit_blood_fluid":false}]}' \
  | 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 $0.007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.007" });
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 $0.007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fheaven&method=POST
const res = await pay("https://api.magentlab.com/api/calc/heaven", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "anatomic_challenges": false,
        "exsanguination": false,
        "extremes_of_size": false,
        "hypoxemia": false,
        "neck_mobility_limited": false,
        "vomit_blood_fluid": false
      },
      {
        "anatomic_challenges": false,
        "exsanguination": false,
        "extremes_of_size": false,
        "hypoxemia": false,
        "neck_mobility_limited": false,
        "vomit_blood_fluid": false
      }
    ]
  }),
});
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 $0.007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.007"})
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/heaven",
        json={
            "items": [
                {
                    "anatomic_challenges": False,
                    "exsanguination": False,
                    "extremes_of_size": False,
                    "hypoxemia": False,
                    "neck_mobility_limited": False,
                    "vomit_blood_fluid": False,
                },
                {
                    "anatomic_challenges": False,
                    "exsanguination": False,
                    "extremes_of_size": False,
                    "hypoxemia": False,
                    "neck_mobility_limited": False,
                    "vomit_blood_fluid": False,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

1 finding

  • Charges more than its listed price in payment
    Listed at $0.005, charges $0.007

Recent checks

WhenResultHTTPTimePrice
3 h agoTimed out---
8 h agoTimed out---
13 h agoPassed402234 ms$0.007
18 h agoPassed402156 ms$0.007
22 h agoPassed402228 ms$0.007
Show 10 older checks
27 h agoPassed402250 ms$0.007
32 h agoPassed402443 ms$0.007
36 h agoPassed402221 ms$0.007
40 h agoPassed402219 ms$0.007
44 h agoPassed402144 ms$0.007
2 days agoPassed402139 ms$0.007
2 days agoPassed402138 ms$0.007
2 days agoPassed402169 ms$0.007
3 days agoPassed402248 ms$0.007
3 days agoPassed402153 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007