67trust / 100

Calc Apache Ii

x402 APIFailing, checked 44 min ago

Knaus 1985 APACHE II integer: 12 Acute Physiology Score items (worst in 24 hours as assigned by the caller) plus age and chronic-health points, max 71. Oxygenation uses A-aDO2 when FiO2 is at least 0.5 and PaO2 when FiO2 is below 0.5. Creatinine points double in acute renal failure. Does not compute predicted death risk. magent does not measure vitals.

POST

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

Price: $0.007; per call in USDC
Uptime: 88.9%; last 30 days
Response time: 256 ms; 1.1 s slowest 5%
Last check: Failed; 44 min ago, next in 20 min

Run a free test call How to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 44 min ago: Timed out

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

How to call it

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

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/apache_ii
content-type: application/json

{
  "items": [
    {
      "aa_gradient": 100,
      "acute_renal_failure": false,
      "age": 40,
      "arterial_ph": 7.4,
      "chronic_health": false,
      "creatinine_mg_dl": 1,
      "elective_postop": false,
      "fio2": 0.21,
      "gcs": 15,
      "heart_rate": 80,
      "hematocrit_percent": 40,
      "map_mm_hg": 90,
      "pao2_mm_hg": 90,
      "potassium_mmol_l": 4,
      "respiratory_rate": 16,
      "sodium_mmol_l": 140,
      "temperature_c": 37,
      "wbc_k_ul": 8
    },
    {
      "aa_gradient": 100,
      "acute_renal_failure": false,
      "age": 40,
      "arterial_ph": 7.4,
      "chronic_health": false,
      "creatinine_mg_dl": 1,
      "elective_postop": false,
      "fio2": 0.21,
      "gcs": 15,
      "heart_rate": 80,
      "hematocrit_percent": 40,
      "map_mm_hg": 90,
      "pao2_mm_hg": 90,
      "potassium_mmol_l": 4,
      "respiratory_rate": 16,
      "sodium_mmol_l": 140,
      "temperature_c": 37,
      "wbc_k_ul": 8
    }
  ]
}

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, 216 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Knaus WA, Draper EA, Wagner DP, Zimmerman JE",
        "doi": "10.1097/00003246-198510000-00009",
        "id": "knaus-1985",
        "pmid": "3928249",
        "source": "Crit Care Med. 1985;13(10):818-829",
        "title": "APACHE II: a severity of disease classification system"
      },
      "components": [
        {
          "factor": "temperature_c",
          "points": 0,
          "present": false,
          "value": 37
        },
        {
          "factor": "map_mm_hg",
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "heart_rate",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "respiratory_rate",
          "points": 0,
          "present": false,
          "value": 16
        },
        {
          "branch": "pao2_mm_hg",
          "factor": "oxygenation",
          "fio2": 0.21,
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "arterial_ph",
          "points": 0,
          "present": false,
          "value": 7.4
        },
        {
          "factor": "sodium_mmol_l",
          "points": 0,
          "present": false,
          "value": 140
        },
        {
          "factor": "potassium_mmol_l",
          "points": 0,
          "present": false,
          "value": 4
        },
        {
          "acute_renal_failure": false,
          "factor": "creatinine_mg_dl",
          "points": 0,
          "present": false,
          "value": 1
        },
        {
          "factor": "hematocrit_percent",
          "points": 0,
          "present": false,
          "value": 40
        },
        {
          "factor": "wbc_k_ul",
          "points": 0,
          "present": false,
          "value": 8
        },
        {
          "factor": "gcs",
          "points": 0,
          "present": false,
          "value": 15
        },
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 40
        },
        {
          "chronic_health": false,
          "elective_postop": false,
          "factor": "chronic_health",
          "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": "apache_ii",
      "formula_expression": "APACHE II = APS + age_points + chronic_health_points; APS is the sum of 12 Knaus 1985 Table 1 items (worst values in 24h as assigned by the caller): temperature_c, map_mm_hg, heart_rate, respiratory_rate, oxygenation (A-aDO2 if fio2 >= 0.5, PaO2 if fio2 < 0.5), arterial_ph, sodium_mmol_l, potassium_mmol_l, creatinine_mg_dl (doubled if acute_renal_failure), hematocrit_percent, wbc_k_ul, and 15-gcs; age <=44 → 0, 45-54 → 2, 55-64 → 3, 65-74 → 5, >=75 → 6; chronic health 0 if none, else +5 nonoperative or emergency postoperative or +2 elective postoperative; max 71",
      "max_score": 71,
      "score": 0
    },
    {
      "citation": {
        "authors": "Knaus WA, Draper EA, Wagner DP, Zimmerman JE",
        "doi": "10.1097/00003246-198510000-00009",
        "id": "knaus-1985",
        "pmid": "3928249",
        "source": "Crit Care Med. 1985;13(10):818-829",
        "title": "APACHE II: a severity of disease classification system"
      },
      "components": [
        {
          "factor": "temperature_c",
          "points": 0,
          "present": false,
          "value": 37
        },
        {
          "factor": "map_mm_hg",
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "heart_rate",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "respiratory_rate",
          "points": 0,
          "present": false,
          "value": 16
        },
        {
          "branch": "pao2_mm_hg",
          "factor": "oxygenation",
          "fio2": 0.21,
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "arterial_ph",
          "points": 0,
          "present": false,
          "value": 7.4
        },
        {
          "factor": "sodium_mmol_l",
          "points": 0,
          "present": false,
          "value": 140
        },
        {
          "factor": "potassium_mmol_l",
          "points": 0,
          "present": false,
          "value": 4
        },
        {
          "acute_renal_failure": false,
          "factor": "creatinine_mg_dl",
          "points": 0,
          "present": false,
          "value": 1
        },
        {
          "factor": "hematocrit_percent",
          "points": 0,
          "present": false,
          "value": 40
        },
        {
          "factor": "wbc_k_ul",
          "points": 0,
          "present": false,
          "value": 8
        },
        {
          "factor": "gcs",
          "points": 0,
          "present": false,
          "value": 15
        },
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 40
        },
        {
          "chronic_health": false,
          "elective_postop": false,
          "factor": "chronic_health",
          "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": "apache_ii",
      "formula_expression": "APACHE II = APS + age_points + chronic_health_points; APS is the sum of 12 Knaus 1985 Table 1 items (worst values in 24h as assigned by the caller): temperature_c, map_mm_hg, heart_rate, respiratory_rate, oxygenation (A-aDO2 if fio2 >= 0.5, PaO2 if fio2 < 0.5), arterial_ph, sodium_mmol_l, potassium_mmol_l, creatinine_mg_dl (doubled if acute_renal_failure), hematocrit_percent, wbc_k_ul, and 15-gcs; age <=44 → 0, 45-54 → 2, 55-64 → 3, 65-74 → 5, >=75 → 6; chronic health 0 if none, else +5 nonoperative or emergency postoperative or +2 elective postoperative; max 71",
      "max_score": 71,
      "score": 0
    }
  ],
  "path": "/api/calc/apache_ii"
}

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/apache_ii' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"aa_gradient":100,"acute_renal_failure":false,"age":40,"arterial_ph":7.4,"chronic_health":false,"creatinine_mg_dl":1,"elective_postop":false,"fio2":0.21,"gcs":15,"heart_rate":80,"hematocrit_percent":40,"map_mm_hg":90,"pao2_mm_hg":90,"potassium_mmol_l":4,"respiratory_rate":16,"sodium_mmol_l":140,"temperature_c":37,"wbc_k_ul":8},{"aa_gradient":100,"acute_renal_failure":false,"age":40,"arterial_ph":7.4,"chronic_health":false,"creatinine_mg_dl":1,"elective_postop":false,"fio2":0.21,"gcs":15,"heart_rate":80,"hematocrit_percent":40,"map_mm_hg":90,"pao2_mm_hg":90,"potassium_mmol_l":4,"respiratory_rate":16,"sodium_mmol_l":140,"temperature_c":37,"wbc_k_ul":8}]}'

# 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/apache_ii' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"aa_gradient":100,"acute_renal_failure":false,"age":40,"arterial_ph":7.4,"chronic_health":false,"creatinine_mg_dl":1,"elective_postop":false,"fio2":0.21,"gcs":15,"heart_rate":80,"hematocrit_percent":40,"map_mm_hg":90,"pao2_mm_hg":90,"potassium_mmol_l":4,"respiratory_rate":16,"sodium_mmol_l":140,"temperature_c":37,"wbc_k_ul":8},{"aa_gradient":100,"acute_renal_failure":false,"age":40,"arterial_ph":7.4,"chronic_health":false,"creatinine_mg_dl":1,"elective_postop":false,"fio2":0.21,"gcs":15,"heart_rate":80,"hematocrit_percent":40,"map_mm_hg":90,"pao2_mm_hg":90,"potassium_mmol_l":4,"respiratory_rate":16,"sodium_mmol_l":140,"temperature_c":37,"wbc_k_ul":8}]}' \
  | 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%2Fapache_ii&method=POST
const res = await pay("https://api.magentlab.com/api/calc/apache_ii", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "aa_gradient": 100,
        "acute_renal_failure": false,
        "age": 40,
        "arterial_ph": 7.4,
        "chronic_health": false,
        "creatinine_mg_dl": 1,
        "elective_postop": false,
        "fio2": 0.21,
        "gcs": 15,
        "heart_rate": 80,
        "hematocrit_percent": 40,
        "map_mm_hg": 90,
        "pao2_mm_hg": 90,
        "potassium_mmol_l": 4,
        "respiratory_rate": 16,
        "sodium_mmol_l": 140,
        "temperature_c": 37,
        "wbc_k_ul": 8
      },
      {
        "aa_gradient": 100,
        "acute_renal_failure": false,
        "age": 40,
        "arterial_ph": 7.4,
        "chronic_health": false,
        "creatinine_mg_dl": 1,
        "elective_postop": false,
        "fio2": 0.21,
        "gcs": 15,
        "heart_rate": 80,
        "hematocrit_percent": 40,
        "map_mm_hg": 90,
        "pao2_mm_hg": 90,
        "potassium_mmol_l": 4,
        "respiratory_rate": 16,
        "sodium_mmol_l": 140,
        "temperature_c": 37,
        "wbc_k_ul": 8
      }
    ]
  }),
});
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/apache_ii",
        json={
            "items": [
                {
                    "aa_gradient": 100,
                    "acute_renal_failure": False,
                    "age": 40,
                    "arterial_ph": 7.4,
                    "chronic_health": False,
                    "creatinine_mg_dl": 1,
                    "elective_postop": False,
                    "fio2": 0.21,
                    "gcs": 15,
                    "heart_rate": 80,
                    "hematocrit_percent": 40,
                    "map_mm_hg": 90,
                    "pao2_mm_hg": 90,
                    "potassium_mmol_l": 4,
                    "respiratory_rate": 16,
                    "sodium_mmol_l": 140,
                    "temperature_c": 37,
                    "wbc_k_ul": 8,
                },
                {
                    "aa_gradient": 100,
                    "acute_renal_failure": False,
                    "age": 40,
                    "arterial_ph": 7.4,
                    "chronic_health": False,
                    "creatinine_mg_dl": 1,
                    "elective_postop": False,
                    "fio2": 0.21,
                    "gcs": 15,
                    "heart_rate": 80,
                    "hematocrit_percent": 40,
                    "map_mm_hg": 90,
                    "pao2_mm_hg": 90,
                    "potassium_mmol_l": 4,
                    "respiratory_rate": 16,
                    "sodium_mmol_l": 140,
                    "temperature_c": 37,
                    "wbc_k_ul": 8,
                },
            ],
        },
    )
    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
44 min ago	Timed out	-	-	-
6 h ago	Timed out	-	-	-
11 h ago	Timed out	-	-	-
16 h ago	Timed out	-	-	-
21 h ago	Passed	402	146 ms	$0.007

Show 10 older checks

26 h ago	Passed	402	1.1 s	$0.007
30 h ago	Passed	402	372 ms	$0.007
35 h ago	Passed	402	362 ms	$0.007
40 h ago	Passed	402	156 ms	$0.007
44 h ago	Passed	402	382 ms	$0.007
2 days ago	Passed	402	285 ms	$0.007
2 days ago	Passed	402	225 ms	$0.007
2 days ago	Passed	402	327 ms	$0.007
3 days ago	Passed	402	256 ms	$0.007
3 days ago	Passed	402	291 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.

Is this your service?

Verify ownership to get the badge and 10 more trust points. Featured placement needs it too.

Verify ownership

Changed something? Check it again now and see what agents get.

Show the score

A badge for your README or docs. It updates with every check and links here.

Trust score

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