67trust / 100

Calc Charlson

by magent in Other

x402 APIFailing, checked 5 h ago

Charlson 1987 original weighted comorbidity index. Nineteen caller-assigned flags with published weights 1, 2, 3, or 6 (max 37). 1-year mortality groups: 0, 1–2, 3–4, ≥5. Flags are independent (overlapping pairs are not dropped). Not a diagnosis, not Deyo or Quan ICD mapping, not age-adjusted Charlson. LACE takes the integer this tool returns. magent does not diagnose.

POST

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

Price: $0.007; per call in USDC
Uptime: 91.4%; last 30 days
Response time: 172 ms; 823 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/charlson

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/charlson
content-type: application/json

{
  "items": [
    {
      "aids": false,
      "any_tumor": false,
      "cerebrovascular_disease": false,
      "chronic_pulmonary_disease": false,
      "congestive_heart_failure": false,
      "connective_tissue_disease": false,
      "dementia": false,
      "diabetes": false,
      "diabetes_end_organ": false,
      "hemiplegia": false,
      "leukemia": false,
      "lymphoma": false,
      "metastatic_solid_tumor": false,
      "mild_liver_disease": false,
      "moderate_severe_liver_disease": false,
      "moderate_severe_renal_disease": false,
      "myocardial_infarction": false,
      "peptic_ulcer_disease": false,
      "peripheral_vascular_disease": false
    },
    {
      "aids": false,
      "any_tumor": false,
      "cerebrovascular_disease": false,
      "chronic_pulmonary_disease": false,
      "congestive_heart_failure": false,
      "connective_tissue_disease": false,
      "dementia": false,
      "diabetes": false,
      "diabetes_end_organ": false,
      "hemiplegia": false,
      "leukemia": false,
      "lymphoma": false,
      "metastatic_solid_tumor": false,
      "mild_liver_disease": false,
      "moderate_severe_liver_disease": false,
      "moderate_severe_renal_disease": false,
      "myocardial_infarction": false,
      "peptic_ulcer_disease": false,
      "peripheral_vascular_disease": false
    }
  ]
}

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, 232 lines

{
  "count": 2,
  "items": [
    {
      "charlson_band": "score_0",
      "citation": {
        "authors": "Charlson ME, Pompei P, Ales KL, MacKenzie CR",
        "doi": "10.1016/0021-9681(87)90171-8",
        "id": "charlson-1987",
        "pmid": "3558716",
        "source": "J Chronic Dis. 1987;40(5):373-383",
        "title": "A new method of classifying prognostic comorbidity in longitudinal studies: development and validation"
      },
      "components": [
        {
          "factor": "myocardial_infarction",
          "points": 0,
          "present": false
        },
        {
          "factor": "congestive_heart_failure",
          "points": 0,
          "present": false
        },
        {
          "factor": "peripheral_vascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "cerebrovascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "dementia",
          "points": 0,
          "present": false
        },
        {
          "factor": "chronic_pulmonary_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "connective_tissue_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "peptic_ulcer_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "mild_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemiplegia",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_renal_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes_end_organ",
          "points": 0,
          "present": false
        },
        {
          "factor": "any_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "leukemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "lymphoma",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "metastatic_solid_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "aids",
          "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": "charlson",
      "formula_expression": "CCI = myocardial_infarction 1 + congestive_heart_failure 1 + peripheral_vascular_disease 1 + cerebrovascular_disease 1 + dementia 1 + chronic_pulmonary_disease 1 + connective_tissue_disease 1 + peptic_ulcer_disease 1 + mild_liver_disease 1 + diabetes 1 + hemiplegia 2 + moderate_severe_renal_disease 2 + diabetes_end_organ 2 + any_tumor 2 + leukemia 2 + lymphoma 2 + moderate_severe_liver_disease 3 + metastatic_solid_tumor 6 + aids 6; Charlson 1987 original weighted index; max 37; 1-year mortality groups 0 / 1-2 / 3-4 / >=5; flags independent",
      "max_score": 37,
      "score": 0
    },
    {
      "charlson_band": "score_0",
      "citation": {
        "authors": "Charlson ME, Pompei P, Ales KL, MacKenzie CR",
        "doi": "10.1016/0021-9681(87)90171-8",
        "id": "charlson-1987",
        "pmid": "3558716",
        "source": "J Chronic Dis. 1987;40(5):373-383",
        "title": "A new method of classifying prognostic comorbidity in longitudinal studies: development and validation"
      },
      "components": [
        {
          "factor": "myocardial_infarction",
          "points": 0,
          "present": false
        },
        {
          "factor": "congestive_heart_failure",
          "points": 0,
          "present": false
        },
        {
          "factor": "peripheral_vascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "cerebrovascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "dementia",
          "points": 0,
          "present": false
        },
        {
          "factor": "chronic_pulmonary_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "connective_tissue_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "peptic_ulcer_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "mild_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemiplegia",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_renal_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes_end_organ",
          "points": 0,
          "present": false
        },
        {
          "factor": "any_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "leukemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "lymphoma",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "metastatic_solid_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "aids",
          "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": "charlson",
      "formula_expression": "CCI = myocardial_infarction 1 + congestive_heart_failure 1 + peripheral_vascular_disease 1 + cerebrovascular_disease 1 + dementia 1 + chronic_pulmonary_disease 1 + connective_tissue_disease 1 + peptic_ulcer_disease 1 + mild_liver_disease 1 + diabetes 1 + hemiplegia 2 + moderate_severe_renal_disease 2 + diabetes_end_organ 2 + any_tumor 2 + leukemia 2 + lymphoma 2 + moderate_severe_liver_disease 3 + metastatic_solid_tumor 6 + aids 6; Charlson 1987 original weighted index; max 37; 1-year mortality groups 0 / 1-2 / 3-4 / >=5; flags independent",
      "max_score": 37,
      "score": 0
    }
  ],
  "path": "/api/calc/charlson"
}

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/charlson' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"aids":false,"any_tumor":false,"cerebrovascular_disease":false,"chronic_pulmonary_disease":false,"congestive_heart_failure":false,"connective_tissue_disease":false,"dementia":false,"diabetes":false,"diabetes_end_organ":false,"hemiplegia":false,"leukemia":false,"lymphoma":false,"metastatic_solid_tumor":false,"mild_liver_disease":false,"moderate_severe_liver_disease":false,"moderate_severe_renal_disease":false,"myocardial_infarction":false,"peptic_ulcer_disease":false,"peripheral_vascular_disease":false},{"aids":false,"any_tumor":false,"cerebrovascular_disease":false,"chronic_pulmonary_disease":false,"congestive_heart_failure":false,"connective_tissue_disease":false,"dementia":false,"diabetes":false,"diabetes_end_organ":false,"hemiplegia":false,"leukemia":false,"lymphoma":false,"metastatic_solid_tumor":false,"mild_liver_disease":false,"moderate_severe_liver_disease":false,"moderate_severe_renal_disease":false,"myocardial_infarction":false,"peptic_ulcer_disease":false,"peripheral_vascular_disease":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/charlson' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"aids":false,"any_tumor":false,"cerebrovascular_disease":false,"chronic_pulmonary_disease":false,"congestive_heart_failure":false,"connective_tissue_disease":false,"dementia":false,"diabetes":false,"diabetes_end_organ":false,"hemiplegia":false,"leukemia":false,"lymphoma":false,"metastatic_solid_tumor":false,"mild_liver_disease":false,"moderate_severe_liver_disease":false,"moderate_severe_renal_disease":false,"myocardial_infarction":false,"peptic_ulcer_disease":false,"peripheral_vascular_disease":false},{"aids":false,"any_tumor":false,"cerebrovascular_disease":false,"chronic_pulmonary_disease":false,"congestive_heart_failure":false,"connective_tissue_disease":false,"dementia":false,"diabetes":false,"diabetes_end_organ":false,"hemiplegia":false,"leukemia":false,"lymphoma":false,"metastatic_solid_tumor":false,"mild_liver_disease":false,"moderate_severe_liver_disease":false,"moderate_severe_renal_disease":false,"myocardial_infarction":false,"peptic_ulcer_disease":false,"peripheral_vascular_disease":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%2Fcharlson&method=POST
const res = await pay("https://api.magentlab.com/api/calc/charlson", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "aids": false,
        "any_tumor": false,
        "cerebrovascular_disease": false,
        "chronic_pulmonary_disease": false,
        "congestive_heart_failure": false,
        "connective_tissue_disease": false,
        "dementia": false,
        "diabetes": false,
        "diabetes_end_organ": false,
        "hemiplegia": false,
        "leukemia": false,
        "lymphoma": false,
        "metastatic_solid_tumor": false,
        "mild_liver_disease": false,
        "moderate_severe_liver_disease": false,
        "moderate_severe_renal_disease": false,
        "myocardial_infarction": false,
        "peptic_ulcer_disease": false,
        "peripheral_vascular_disease": false
      },
      {
        "aids": false,
        "any_tumor": false,
        "cerebrovascular_disease": false,
        "chronic_pulmonary_disease": false,
        "congestive_heart_failure": false,
        "connective_tissue_disease": false,
        "dementia": false,
        "diabetes": false,
        "diabetes_end_organ": false,
        "hemiplegia": false,
        "leukemia": false,
        "lymphoma": false,
        "metastatic_solid_tumor": false,
        "mild_liver_disease": false,
        "moderate_severe_liver_disease": false,
        "moderate_severe_renal_disease": false,
        "myocardial_infarction": false,
        "peptic_ulcer_disease": false,
        "peripheral_vascular_disease": 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/charlson",
        json={
            "items": [
                {
                    "aids": False,
                    "any_tumor": False,
                    "cerebrovascular_disease": False,
                    "chronic_pulmonary_disease": False,
                    "congestive_heart_failure": False,
                    "connective_tissue_disease": False,
                    "dementia": False,
                    "diabetes": False,
                    "diabetes_end_organ": False,
                    "hemiplegia": False,
                    "leukemia": False,
                    "lymphoma": False,
                    "metastatic_solid_tumor": False,
                    "mild_liver_disease": False,
                    "moderate_severe_liver_disease": False,
                    "moderate_severe_renal_disease": False,
                    "myocardial_infarction": False,
                    "peptic_ulcer_disease": False,
                    "peripheral_vascular_disease": False,
                },
                {
                    "aids": False,
                    "any_tumor": False,
                    "cerebrovascular_disease": False,
                    "chronic_pulmonary_disease": False,
                    "congestive_heart_failure": False,
                    "connective_tissue_disease": False,
                    "dementia": False,
                    "diabetes": False,
                    "diabetes_end_organ": False,
                    "hemiplegia": False,
                    "leukemia": False,
                    "lymphoma": False,
                    "metastatic_solid_tumor": False,
                    "mild_liver_disease": False,
                    "moderate_severe_liver_disease": False,
                    "moderate_severe_renal_disease": False,
                    "myocardial_infarction": False,
                    "peptic_ulcer_disease": False,
                    "peripheral_vascular_disease": 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

When	Result	HTTP	Time	Price
5 h ago	Timed out	-	-	-
9 h ago	Timed out	-	-	-
14 h ago	Timed out	-	-	-
19 h ago	Passed	402	171 ms	$0.007
24 h ago	Passed	402	227 ms	$0.007

Show 10 older checks

29 h ago	Passed	402	177 ms	$0.007
33 h ago	Passed	402	285 ms	$0.007
38 h ago	Passed	402	384 ms	$0.007
42 h ago	Passed	402	413 ms	$0.007
47 h ago	Passed	402	141 ms	$0.007
2 days ago	Passed	402	368 ms	$0.007
2 days ago	Passed	402	183 ms	$0.007
2 days ago	Passed	402	271 ms	$0.007
3 days ago	Passed	402	600 ms	$0.007
3 days ago	Passed	402	145 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-charlson.svg)](https://toolvet.app/s/calc-charlson)