ToolVet
78trust / 100

Calc Nhfs

by magent in Other

x402 APIPassing, checked 3 h ago

Maxwell 2008 Nottingham hip fracture score: age <=65 0, 66-85 3, >=86 4; male 1; hemoglobin <=10 g/dL 1 (g/L / 10); caller-assigned AMTS <=6, lives in institution, >=2 comorbidities, and malignancy 1 each. Max 10. Integer score only; no predicted 30-day mortality percent. magent does not administer AMTS or clear a patient for surgery. Not the 2012 or 2015 recalibrations.

POST
https://api.magentlab.com/api/calc/nhfs
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
166 ms
505 ms slowest 5%
Last check
Passed
3 h 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://api.magentlab.com/api/calc/nhfs

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/nhfs
content-type: application/json

{
  "items": [
    {
      "age": 70,
      "amts_le_6": false,
      "comorbidities_ge_2": false,
      "hemoglobin_g_dl": 12,
      "hemoglobin_g_l": 120,
      "lives_in_institution": false,
      "malignancy": false,
      "sex": "female"
    },
    {
      "age": 70,
      "amts_le_6": false,
      "comorbidities_ge_2": false,
      "hemoglobin_g_dl": 12,
      "hemoglobin_g_l": 120,
      "lives_in_institution": false,
      "malignancy": false,
      "sex": "female"
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 130 lines
{
  "count": 2,
  "items": [
    {
      "age_years": 70,
      "amts_le_6": false,
      "citation": {
        "authors": "Maxwell MJ, Moran CG, Moppett IK",
        "doi": "10.1093/bja/aen236",
        "id": "maxwell-2008",
        "pmid": "18723517",
        "source": "Br J Anaesth. 2008;101(4):511-517",
        "title": "Development and validation of a preoperative scoring system to predict 30 day mortality in patients undergoing hip fracture surgery"
      },
      "comorbidities_ge_2": false,
      "components": [
        {
          "factor": "age",
          "points": 3,
          "present": true,
          "value": 70
        },
        {
          "factor": "sex",
          "points": 0,
          "present": false,
          "value": "female"
        },
        {
          "factor": "hemoglobin",
          "points": 0,
          "present": false,
          "value": 12
        },
        {
          "factor": "amts_le_6",
          "points": 0,
          "present": false
        },
        {
          "factor": "lives_in_institution",
          "points": 0,
          "present": false
        },
        {
          "factor": "comorbidities_ge_2",
          "points": 0,
          "present": false
        },
        {
          "factor": "malignancy",
          "points": 0,
          "present": 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": "nhfs",
      "formula_expression": "NHFS = age (≤65 0, 66-85 3, ≥86 4) + male 1 + (hemoglobin ≤10 g/dL) 1 + amts_le_6 1 + lives_in_institution 1 + comorbidities_ge_2 1 + malignancy 1; Maxwell 2008 integer score; max 10",
      "hemoglobin_g_dl": 12,
      "lives_in_institution": false,
      "malignancy": false,
      "max_score": 10,
      "score": 3,
      "sex": "female"
    },
    {
      "age_years": 70,
      "amts_le_6": false,
      "citation": {
        "authors": "Maxwell MJ, Moran CG, Moppett IK",
        "doi": "10.1093/bja/aen236",
        "id": "maxwell-2008",
        "pmid": "18723517",
        "source": "Br J Anaesth. 2008;101(4):511-517",
        "title": "Development and validation of a preoperative scoring system to predict 30 day mortality in patients undergoing hip fracture surgery"
      },
      "comorbidities_ge_2": false,
      "components": [
        {
          "factor": "age",
          "points": 3,
          "present": true,
          "value": 70
        },
        {
          "factor": "sex",
          "points": 0,
          "present": false,
          "value": "female"
        },
        {
          "factor": "hemoglobin",
          "points": 0,
          "present": false,
          "value": 12
        },
        {
          "factor": "amts_le_6",
          "points": 0,
          "present": false
        },
        {
          "factor": "lives_in_institution",
          "points": 0,
          "present": false
        },
        {
          "factor": "comorbidities_ge_2",
          "points": 0,
          "present": false
        },
        {
          "factor": "malignancy",
          "points": 0,
          "present": 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": "nhfs",
      "formula_expression": "NHFS = age (≤65 0, 66-85 3, ≥86 4) + male 1 + (hemoglobin ≤10 g/dL) 1 + amts_le_6 1 + lives_in_institution 1 + comorbidities_ge_2 1 + malignancy 1; Maxwell 2008 integer score; max 10",
      "hemoglobin_g_dl": 12,
      "lives_in_institution": false,
      "malignancy": false,
      "max_score": 10,
      "score": 3,
      "sex": "female"
    }
  ],
  "path": "/api/calc/nhfs"
}

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/nhfs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":70,"amts_le_6":false,"comorbidities_ge_2":false,"hemoglobin_g_dl":12,"hemoglobin_g_l":120,"lives_in_institution":false,"malignancy":false,"sex":"female"},{"age":70,"amts_le_6":false,"comorbidities_ge_2":false,"hemoglobin_g_dl":12,"hemoglobin_g_l":120,"lives_in_institution":false,"malignancy":false,"sex":"female"}]}'

# 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/nhfs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":70,"amts_le_6":false,"comorbidities_ge_2":false,"hemoglobin_g_dl":12,"hemoglobin_g_l":120,"lives_in_institution":false,"malignancy":false,"sex":"female"},{"age":70,"amts_le_6":false,"comorbidities_ge_2":false,"hemoglobin_g_dl":12,"hemoglobin_g_l":120,"lives_in_institution":false,"malignancy":false,"sex":"female"}]}' \
  | 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%2Fnhfs&method=POST
const res = await pay("https://api.magentlab.com/api/calc/nhfs", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 70,
        "amts_le_6": false,
        "comorbidities_ge_2": false,
        "hemoglobin_g_dl": 12,
        "hemoglobin_g_l": 120,
        "lives_in_institution": false,
        "malignancy": false,
        "sex": "female"
      },
      {
        "age": 70,
        "amts_le_6": false,
        "comorbidities_ge_2": false,
        "hemoglobin_g_dl": 12,
        "hemoglobin_g_l": 120,
        "lives_in_institution": false,
        "malignancy": false,
        "sex": "female"
      }
    ]
  }),
});
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/nhfs",
        json={
            "items": [
                {
                    "age": 70,
                    "amts_le_6": False,
                    "comorbidities_ge_2": False,
                    "hemoglobin_g_dl": 12,
                    "hemoglobin_g_l": 120,
                    "lives_in_institution": False,
                    "malignancy": False,
                    "sex": "female",
                },
                {
                    "age": 70,
                    "amts_le_6": False,
                    "comorbidities_ge_2": False,
                    "hemoglobin_g_dl": 12,
                    "hemoglobin_g_l": 120,
                    "lives_in_institution": False,
                    "malignancy": False,
                    "sex": "female",
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402315 ms$0.005
7 h agoPassed402166 ms$0.005
12 h agoPassed402145 ms$0.005
16 h agoPassed402155 ms$0.005
20 h agoPassed402141 ms$0.005
Show 10 older checks
24 h agoPassed402143 ms$0.005
29 h agoPassed402286 ms$0.005
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