67trust / 100

Calc Crusade

by magent in Other

x402 APIFailing, checked 5 h ago

CRUSADE in-hospital major bleeding score (Subherwal 2009 Table 4) for NSTE-ACS / NSTEMI. Points from hematocrit, caller-assigned Cockcroft–Gault CrCl, heart rate, sex, CHF, prior vascular disease, diabetes, and systolic BP. Returns integer score (max 96), quintile band, and published in-hospital major-bleeding percent. Not a medical device; magent does not compute CrCl or examine the patient.

POST

https://api.magentlab.com/api/calc/crusade

Price: $0.007; per call in USDC
Uptime: 91.4%; last 30 days
Response time: 161 ms; 620 ms slowest 5%
Last check: Failed; 5 h ago, next any minute now

Run a free test call How to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 5 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/crusade

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/crusade
content-type: application/json

{
  "items": [
    {
      "crcl_ml_min": 130,
      "diabetes": false,
      "heart_rate_bpm": 65,
      "hematocrit_percent": 42,
      "prior_vascular_disease": false,
      "sex": "male",
      "signs_of_chf": false,
      "systolic_mm_hg": 140
    },
    {
      "crcl_ml_min": 130,
      "diabetes": false,
      "heart_rate_bpm": 65,
      "hematocrit_percent": 42,
      "prior_vascular_disease": false,
      "sex": "male",
      "signs_of_chf": false,
      "systolic_mm_hg": 140
    }
  ]
}

Parameters

Parameter	Type	Required	Description
`items`	array of object	Yes

Example response

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

Example response, 150 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Subherwal S, Bach RG, Chen AY, et al.",
        "doi": "10.1161/CIRCULATIONAHA.108.828541",
        "id": "subherwal-2009",
        "pmid": "19332461",
        "source": "Circulation. 2009;119(14):1873-1882",
        "title": "Baseline risk of major bleeding in non–ST-segment-elevation myocardial infarction: the CRUSADE Bleeding Score"
      },
      "components": [
        {
          "factor": "hematocrit_percent",
          "points": 0,
          "present": false,
          "value": 42
        },
        {
          "factor": "crcl_ml_min",
          "points": 0,
          "present": false,
          "value": 130
        },
        {
          "factor": "heart_rate_bpm",
          "points": 0,
          "present": false,
          "value": 65
        },
        {
          "factor": "sex",
          "points": 0,
          "present": false,
          "value": "male"
        },
        {
          "factor": "signs_of_chf",
          "points": 0,
          "present": false
        },
        {
          "factor": "prior_vascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "systolic_mm_hg",
          "points": 1,
          "present": true,
          "value": 140
        }
      ],
      "crcl_ml_min": 130,
      "crusade_band": "very_low",
      "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": "crusade",
      "formula_expression": "CRUSADE = hematocrit(<31:9, 31-<34:7, 34-<37:3, 37-<40:2, >=40:0) + crcl_ml_min(<=15:39, >15-30:35, >30-60:28, >60-90:17, >90-120:7, >120:0) + heart_rate(<=70:0, 71-80:1, 81-90:3, 91-100:6, 101-110:8, 111-120:10, >=121:11) + female(8) + signs_of_chf(7) + prior_vascular_disease(6) + diabetes(6) + systolic(<=90:10, 91-100:8, 101-120:5, 121-180:1, 181-200:3, >=201:5); Subherwal 2009 Table 4; quintiles <=20 3.1%, 21-30 5.5%, 31-40 8.6%, 41-50 11.9%, >50 19.5%; max 96",
      "heart_rate_bpm": 65,
      "hematocrit_percent": 42,
      "in_hospital_major_bleeding_percent": 3.1,
      "max_score": 96,
      "prior_vascular_disease": false,
      "score": 1,
      "sex": "male",
      "signs_of_chf": false,
      "systolic_mm_hg": 140
    },
    {
      "citation": {
        "authors": "Subherwal S, Bach RG, Chen AY, et al.",
        "doi": "10.1161/CIRCULATIONAHA.108.828541",
        "id": "subherwal-2009",
        "pmid": "19332461",
        "source": "Circulation. 2009;119(14):1873-1882",
        "title": "Baseline risk of major bleeding in non–ST-segment-elevation myocardial infarction: the CRUSADE Bleeding Score"
      },
      "components": [
        {
          "factor": "hematocrit_percent",
          "points": 0,
          "present": false,
          "value": 42
        },
        {
          "factor": "crcl_ml_min",
          "points": 0,
          "present": false,
          "value": 130
        },
        {
          "factor": "heart_rate_bpm",
          "points": 0,
          "present": false,
          "value": 65
        },
        {
          "factor": "sex",
          "points": 0,
          "present": false,
          "value": "male"
        },
        {
          "factor": "signs_of_chf",
          "points": 0,
          "present": false
        },
        {
          "factor": "prior_vascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "systolic_mm_hg",
          "points": 1,
          "present": true,
          "value": 140
        }
      ],
      "crcl_ml_min": 130,
      "crusade_band": "very_low",
      "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": "crusade",
      "formula_expression": "CRUSADE = hematocrit(<31:9, 31-<34:7, 34-<37:3, 37-<40:2, >=40:0) + crcl_ml_min(<=15:39, >15-30:35, >30-60:28, >60-90:17, >90-120:7, >120:0) + heart_rate(<=70:0, 71-80:1, 81-90:3, 91-100:6, 101-110:8, 111-120:10, >=121:11) + female(8) + signs_of_chf(7) + prior_vascular_disease(6) + diabetes(6) + systolic(<=90:10, 91-100:8, 101-120:5, 121-180:1, 181-200:3, >=201:5); Subherwal 2009 Table 4; quintiles <=20 3.1%, 21-30 5.5%, 31-40 8.6%, 41-50 11.9%, >50 19.5%; max 96",
      "heart_rate_bpm": 65,
      "hematocrit_percent": 42,
      "in_hospital_major_bleeding_percent": 3.1,
      "max_score": 96,
      "prior_vascular_disease": false,
      "score": 1,
      "sex": "male",
      "signs_of_chf": false,
      "systolic_mm_hg": 140
    }
  ],
  "path": "/api/calc/crusade"
}

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/crusade' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"crcl_ml_min":130,"diabetes":false,"heart_rate_bpm":65,"hematocrit_percent":42,"prior_vascular_disease":false,"sex":"male","signs_of_chf":false,"systolic_mm_hg":140},{"crcl_ml_min":130,"diabetes":false,"heart_rate_bpm":65,"hematocrit_percent":42,"prior_vascular_disease":false,"sex":"male","signs_of_chf":false,"systolic_mm_hg":140}]}'

# 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/crusade' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"crcl_ml_min":130,"diabetes":false,"heart_rate_bpm":65,"hematocrit_percent":42,"prior_vascular_disease":false,"sex":"male","signs_of_chf":false,"systolic_mm_hg":140},{"crcl_ml_min":130,"diabetes":false,"heart_rate_bpm":65,"hematocrit_percent":42,"prior_vascular_disease":false,"sex":"male","signs_of_chf":false,"systolic_mm_hg":140}]}' \
  | 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%2Fcrusade&method=POST
const res = await pay("https://api.magentlab.com/api/calc/crusade", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "crcl_ml_min": 130,
        "diabetes": false,
        "heart_rate_bpm": 65,
        "hematocrit_percent": 42,
        "prior_vascular_disease": false,
        "sex": "male",
        "signs_of_chf": false,
        "systolic_mm_hg": 140
      },
      {
        "crcl_ml_min": 130,
        "diabetes": false,
        "heart_rate_bpm": 65,
        "hematocrit_percent": 42,
        "prior_vascular_disease": false,
        "sex": "male",
        "signs_of_chf": false,
        "systolic_mm_hg": 140
      }
    ]
  }),
});
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/crusade",
        json={
            "items": [
                {
                    "crcl_ml_min": 130,
                    "diabetes": False,
                    "heart_rate_bpm": 65,
                    "hematocrit_percent": 42,
                    "prior_vascular_disease": False,
                    "sex": "male",
                    "signs_of_chf": False,
                    "systolic_mm_hg": 140,
                },
                {
                    "crcl_ml_min": 130,
                    "diabetes": False,
                    "heart_rate_bpm": 65,
                    "hematocrit_percent": 42,
                    "prior_vascular_disease": False,
                    "sex": "male",
                    "signs_of_chf": False,
                    "systolic_mm_hg": 140,
                },
            ],
        },
    )
    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

When	Result	HTTP	Time	Price
5 h ago	Timed out	-	-	-
10 h ago	Timed out	-	-	-
14 h ago	Timed out	-	-	-
19 h ago	Passed	402	164 ms	$0.007
24 h ago	Passed	402	268 ms	$0.007

Show 10 older checks

29 h ago	Passed	402	162 ms	$0.007
34 h ago	Passed	402	149 ms	$0.007
38 h ago	Passed	402	150 ms	$0.007
42 h ago	Passed	402	143 ms	$0.007
47 h ago	Passed	402	285 ms	$0.007
2 days ago	Passed	402	146 ms	$0.007
2 days ago	Passed	402	155 ms	$0.007
2 days ago	Passed	402	306 ms	$0.007
3 days ago	Passed	402	144 ms	$0.007
3 days ago	Passed	402	164 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 67/ 100

Availability (30-day uptime)		27 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		5 / 15
Charges what it lists		0 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.007 per call
Listed at: $0.005 (charges more)
Token: USDC
Networks: Base
Pays to: 0x836B…9Ee2

Real usage

Paying agents: 2 in 30 days
Paid calls: 5 in 30 days
Last paid call: 5 days ago

Source: x402 Bazaar settlement data.

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Trust score

[![ToolVet trust score](https://toolvet.app/badge/calc-crusade.svg)](https://toolvet.app/s/calc-crusade)