67trust / 100

Calc Duke

by magent in Other

x402 APIFailing, checked 3 h ago

Durack 1994 original Duke criteria for infective endocarditis. Definite if pathologic_definite or clinical_definite (2 major, or 1 major plus 3 minor, or 5 minor); else rejected if any rejected flag; else possible. Suggestive echo and suggestive micro are not double-counted with the matching major. Caller assigns flags. magent does not examine the patient, read an echocardiogram, or interpret cultures. Not Li 2000 modified Duke. Not ISCVID 2023. Not a diagnosis.

POST

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

Price: $0.007; per call in USDC
Uptime: 91.4%; last 30 days
Response time: 238 ms; 469 ms slowest 5%
Last check: Failed; 3 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 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/duke

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/duke
content-type: application/json

{
  "items": [
    {
      "major_positive_echo": true,
      "major_typical_blood_culture": true,
      "minor_fever": false,
      "minor_immunologic_phenomena": false,
      "minor_predisposition": false,
      "minor_suggestive_echo": false,
      "minor_suggestive_micro": false,
      "minor_vascular_phenomena": false,
      "pathologic_definite": false,
      "rejected_firm_alternate_diagnosis": false,
      "rejected_no_pathology_le_4_days_antibiotics": false,
      "rejected_resolved_le_4_days_antibiotics": false
    },
    {
      "major_positive_echo": true,
      "major_typical_blood_culture": true,
      "minor_fever": false,
      "minor_immunologic_phenomena": false,
      "minor_predisposition": false,
      "minor_suggestive_echo": false,
      "minor_suggestive_micro": false,
      "minor_vascular_phenomena": false,
      "pathologic_definite": false,
      "rejected_firm_alternate_diagnosis": false,
      "rejected_no_pathology_le_4_days_antibiotics": false,
      "rejected_resolved_le_4_days_antibiotics": 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, 154 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Durack DT, Lukes AS, Bright DK",
        "doi": "10.1016/0002-9343(94)90143-0",
        "id": "durack-1994",
        "pmid": "8154507",
        "source": "Am J Med. 1994;96(3):200-209",
        "title": "New criteria for diagnosis of infective endocarditis: utilization of specific echocardiographic findings. Duke Endocarditis Service"
      },
      "classification": "definite",
      "criteria": [
        {
          "factor": "pathologic_definite",
          "met": false
        },
        {
          "factor": "major_typical_blood_culture",
          "met": true
        },
        {
          "factor": "major_positive_echo",
          "met": true
        },
        {
          "factor": "minor_predisposition",
          "met": false
        },
        {
          "factor": "minor_fever",
          "met": false
        },
        {
          "factor": "minor_vascular_phenomena",
          "met": false
        },
        {
          "factor": "minor_immunologic_phenomena",
          "met": false
        },
        {
          "factor": "minor_suggestive_echo",
          "met": false
        },
        {
          "factor": "minor_suggestive_micro",
          "met": false
        },
        {
          "factor": "rejected_firm_alternate_diagnosis",
          "met": false
        },
        {
          "factor": "rejected_resolved_le_4_days_antibiotics",
          "met": false
        },
        {
          "factor": "rejected_no_pathology_le_4_days_antibiotics",
          "met": false
        },
        {
          "factor": "clinical_definite",
          "met": true
        },
        {
          "factor": "rejected",
          "met": 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": "duke",
      "formula_expression": "definite iff pathologic_definite or clinical_definite; clinical_definite iff major_count >= 2 or (major_count >= 1 and minor_count >= 3) or minor_count >= 5; else rejected if any rejected flag; else possible (Durack 1994 original Duke). minor_suggestive_echo is not counted when major_positive_echo is true; minor_suggestive_micro is not counted when major_typical_blood_culture is true. Not Li 2000. Not ISCVID 2023",
      "major_count": 2,
      "minor_count": 0
    },
    {
      "citation": {
        "authors": "Durack DT, Lukes AS, Bright DK",
        "doi": "10.1016/0002-9343(94)90143-0",
        "id": "durack-1994",
        "pmid": "8154507",
        "source": "Am J Med. 1994;96(3):200-209",
        "title": "New criteria for diagnosis of infective endocarditis: utilization of specific echocardiographic findings. Duke Endocarditis Service"
      },
      "classification": "definite",
      "criteria": [
        {
          "factor": "pathologic_definite",
          "met": false
        },
        {
          "factor": "major_typical_blood_culture",
          "met": true
        },
        {
          "factor": "major_positive_echo",
          "met": true
        },
        {
          "factor": "minor_predisposition",
          "met": false
        },
        {
          "factor": "minor_fever",
          "met": false
        },
        {
          "factor": "minor_vascular_phenomena",
          "met": false
        },
        {
          "factor": "minor_immunologic_phenomena",
          "met": false
        },
        {
          "factor": "minor_suggestive_echo",
          "met": false
        },
        {
          "factor": "minor_suggestive_micro",
          "met": false
        },
        {
          "factor": "rejected_firm_alternate_diagnosis",
          "met": false
        },
        {
          "factor": "rejected_resolved_le_4_days_antibiotics",
          "met": false
        },
        {
          "factor": "rejected_no_pathology_le_4_days_antibiotics",
          "met": false
        },
        {
          "factor": "clinical_definite",
          "met": true
        },
        {
          "factor": "rejected",
          "met": 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": "duke",
      "formula_expression": "definite iff pathologic_definite or clinical_definite; clinical_definite iff major_count >= 2 or (major_count >= 1 and minor_count >= 3) or minor_count >= 5; else rejected if any rejected flag; else possible (Durack 1994 original Duke). minor_suggestive_echo is not counted when major_positive_echo is true; minor_suggestive_micro is not counted when major_typical_blood_culture is true. Not Li 2000. Not ISCVID 2023",
      "major_count": 2,
      "minor_count": 0
    }
  ],
  "path": "/api/calc/duke"
}

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/duke' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"major_positive_echo":true,"major_typical_blood_culture":true,"minor_fever":false,"minor_immunologic_phenomena":false,"minor_predisposition":false,"minor_suggestive_echo":false,"minor_suggestive_micro":false,"minor_vascular_phenomena":false,"pathologic_definite":false,"rejected_firm_alternate_diagnosis":false,"rejected_no_pathology_le_4_days_antibiotics":false,"rejected_resolved_le_4_days_antibiotics":false},{"major_positive_echo":true,"major_typical_blood_culture":true,"minor_fever":false,"minor_immunologic_phenomena":false,"minor_predisposition":false,"minor_suggestive_echo":false,"minor_suggestive_micro":false,"minor_vascular_phenomena":false,"pathologic_definite":false,"rejected_firm_alternate_diagnosis":false,"rejected_no_pathology_le_4_days_antibiotics":false,"rejected_resolved_le_4_days_antibiotics":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/duke' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"major_positive_echo":true,"major_typical_blood_culture":true,"minor_fever":false,"minor_immunologic_phenomena":false,"minor_predisposition":false,"minor_suggestive_echo":false,"minor_suggestive_micro":false,"minor_vascular_phenomena":false,"pathologic_definite":false,"rejected_firm_alternate_diagnosis":false,"rejected_no_pathology_le_4_days_antibiotics":false,"rejected_resolved_le_4_days_antibiotics":false},{"major_positive_echo":true,"major_typical_blood_culture":true,"minor_fever":false,"minor_immunologic_phenomena":false,"minor_predisposition":false,"minor_suggestive_echo":false,"minor_suggestive_micro":false,"minor_vascular_phenomena":false,"pathologic_definite":false,"rejected_firm_alternate_diagnosis":false,"rejected_no_pathology_le_4_days_antibiotics":false,"rejected_resolved_le_4_days_antibiotics":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%2Fduke&method=POST
const res = await pay("https://api.magentlab.com/api/calc/duke", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "major_positive_echo": true,
        "major_typical_blood_culture": true,
        "minor_fever": false,
        "minor_immunologic_phenomena": false,
        "minor_predisposition": false,
        "minor_suggestive_echo": false,
        "minor_suggestive_micro": false,
        "minor_vascular_phenomena": false,
        "pathologic_definite": false,
        "rejected_firm_alternate_diagnosis": false,
        "rejected_no_pathology_le_4_days_antibiotics": false,
        "rejected_resolved_le_4_days_antibiotics": false
      },
      {
        "major_positive_echo": true,
        "major_typical_blood_culture": true,
        "minor_fever": false,
        "minor_immunologic_phenomena": false,
        "minor_predisposition": false,
        "minor_suggestive_echo": false,
        "minor_suggestive_micro": false,
        "minor_vascular_phenomena": false,
        "pathologic_definite": false,
        "rejected_firm_alternate_diagnosis": false,
        "rejected_no_pathology_le_4_days_antibiotics": false,
        "rejected_resolved_le_4_days_antibiotics": 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/duke",
        json={
            "items": [
                {
                    "major_positive_echo": True,
                    "major_typical_blood_culture": True,
                    "minor_fever": False,
                    "minor_immunologic_phenomena": False,
                    "minor_predisposition": False,
                    "minor_suggestive_echo": False,
                    "minor_suggestive_micro": False,
                    "minor_vascular_phenomena": False,
                    "pathologic_definite": False,
                    "rejected_firm_alternate_diagnosis": False,
                    "rejected_no_pathology_le_4_days_antibiotics": False,
                    "rejected_resolved_le_4_days_antibiotics": False,
                },
                {
                    "major_positive_echo": True,
                    "major_typical_blood_culture": True,
                    "minor_fever": False,
                    "minor_immunologic_phenomena": False,
                    "minor_predisposition": False,
                    "minor_suggestive_echo": False,
                    "minor_suggestive_micro": False,
                    "minor_vascular_phenomena": False,
                    "pathologic_definite": False,
                    "rejected_firm_alternate_diagnosis": False,
                    "rejected_no_pathology_le_4_days_antibiotics": False,
                    "rejected_resolved_le_4_days_antibiotics": 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
3 h ago	Timed out	-	-	-
8 h ago	Timed out	-	-	-
13 h ago	Timed out	-	-	-
18 h ago	Passed	402	146 ms	$0.007
22 h ago	Passed	402	410 ms	$0.007

Show 10 older checks

27 h ago	Passed	402	167 ms	$0.007
32 h ago	Passed	402	296 ms	$0.007
36 h ago	Passed	402	288 ms	$0.007
41 h ago	Passed	402	318 ms	$0.007
45 h ago	Passed	402	469 ms	$0.007
2 days ago	Passed	402	144 ms	$0.007
2 days ago	Passed	402	448 ms	$0.007
2 days ago	Passed	402	315 ms	$0.007
3 days ago	Passed	402	435 ms	$0.007
3 days ago	Passed	402	323 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-duke.svg)](https://toolvet.app/s/calc-duke)