78trust / 100

Calc Dragon

by magent in Other

x402 APIPassing, checked 3 h ago

DRAGON (Strbian 2012 Neurology) for 3-month outcome after IV thrombolysis. CT hyperdense artery or early infarct 0/1/2, prestroke mRS >1 (1), age <65/65-79/>=80 (0/1/2), glucose >8 mmol/L (mg/dL /18) (1), onset-to-treatment >90 min (1), NIHSS 0-4/5-9/10-15/>15 (0/1/2/3); max 10. Tabulated mRS 0-2 and mRS 5-6 percents for scores 0-1, 2, 3, 8, and 9-10 only. Not a tPA decision. Not studied in basilar occlusion. magent does not read CT or assign NIHSS.

POST

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

Price: $0.005; per call in USDC
Uptime: 100%; last 30 days
Response time: 241 ms; 472 ms slowest 5%
Last check: Passed; 3 h ago, next any minute now

Run a free test call How to call it

Reliability

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

How to call it

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

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/dragon
content-type: application/json

{
  "items": [
    {
      "age": 60,
      "early_infarct_signs": false,
      "glucose_mg_dl": 108,
      "glucose_mmol_l": 6,
      "hyperdense_artery": false,
      "nihss": 3,
      "onset_to_treatment_min": 60,
      "prestroke_mrs_gt_1": false
    },
    {
      "age": 60,
      "early_infarct_signs": false,
      "glucose_mg_dl": 108,
      "glucose_mmol_l": 6,
      "hyperdense_artery": false,
      "nihss": 3,
      "onset_to_treatment_min": 60,
      "prestroke_mrs_gt_1": 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, 136 lines

{
  "count": 2,
  "items": [
    {
      "age_years": 60,
      "citation": {
        "authors": "Strbian D, Meretoja A, Ahlhelm FJ, Pitkäniemi J, Lyrer P, Kaste M, Tatlisumak T",
        "doi": "10.1212/WNL.0b013e318245d2a9",
        "id": "strbian-2012-dragon",
        "pmid": "22311929",
        "source": "Neurology. 2012;78(6):427-432",
        "title": "Predicting outcome of IV thrombolysis-treated ischemic stroke patients: the DRAGON score"
      },
      "components": [
        {
          "factor": "hyperdense_artery",
          "points": 0,
          "present": false
        },
        {
          "factor": "early_infarct_signs",
          "points": 0,
          "present": false
        },
        {
          "factor": "prestroke_mrs_gt_1",
          "points": 0,
          "present": false
        },
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 60
        },
        {
          "factor": "glucose",
          "points": 0,
          "present": false,
          "value": 6
        },
        {
          "factor": "onset_to_treatment",
          "points": 0,
          "present": false,
          "value": 60
        },
        {
          "factor": "nihss",
          "points": 0,
          "present": false,
          "value": 3
        }
      ],
      "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.",
      "early_infarct_signs": false,
      "formula": "dragon",
      "formula_expression": "DRAGON = dense_ct (hyperdense_artery 1 + early_infarct_signs 1; none 0, either 1, both 2) + prestroke_mrs_gt_1 (1 if prestroke mRS >1) + age (<65 0, 65-79 1, >=80 2) + glucose >8 mmol/L (1; 8.0 does not; mg/dL /18) + onset_to_treatment >90 min (1; 90 does not) + NIHSS (0-4 0, 5-9 1, 10-15 2, >15 3); Strbian 2012; max 10",
      "glucose_mmol_l": 6,
      "good_outcome_percent": 96,
      "hyperdense_artery": false,
      "max_score": 10,
      "miserable_outcome_percent": 0,
      "nihss": 3,
      "onset_to_treatment_min": 60,
      "prestroke_mrs_gt_1": false,
      "score": 0
    },
    {
      "age_years": 60,
      "citation": {
        "authors": "Strbian D, Meretoja A, Ahlhelm FJ, Pitkäniemi J, Lyrer P, Kaste M, Tatlisumak T",
        "doi": "10.1212/WNL.0b013e318245d2a9",
        "id": "strbian-2012-dragon",
        "pmid": "22311929",
        "source": "Neurology. 2012;78(6):427-432",
        "title": "Predicting outcome of IV thrombolysis-treated ischemic stroke patients: the DRAGON score"
      },
      "components": [
        {
          "factor": "hyperdense_artery",
          "points": 0,
          "present": false
        },
        {
          "factor": "early_infarct_signs",
          "points": 0,
          "present": false
        },
        {
          "factor": "prestroke_mrs_gt_1",
          "points": 0,
          "present": false
        },
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 60
        },
        {
          "factor": "glucose",
          "points": 0,
          "present": false,
          "value": 6
        },
        {
          "factor": "onset_to_treatment",
          "points": 0,
          "present": false,
          "value": 60
        },
        {
          "factor": "nihss",
          "points": 0,
          "present": false,
          "value": 3
        }
      ],
      "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.",
      "early_infarct_signs": false,
      "formula": "dragon",
      "formula_expression": "DRAGON = dense_ct (hyperdense_artery 1 + early_infarct_signs 1; none 0, either 1, both 2) + prestroke_mrs_gt_1 (1 if prestroke mRS >1) + age (<65 0, 65-79 1, >=80 2) + glucose >8 mmol/L (1; 8.0 does not; mg/dL /18) + onset_to_treatment >90 min (1; 90 does not) + NIHSS (0-4 0, 5-9 1, 10-15 2, >15 3); Strbian 2012; max 10",
      "glucose_mmol_l": 6,
      "good_outcome_percent": 96,
      "hyperdense_artery": false,
      "max_score": 10,
      "miserable_outcome_percent": 0,
      "nihss": 3,
      "onset_to_treatment_min": 60,
      "prestroke_mrs_gt_1": false,
      "score": 0
    }
  ],
  "path": "/api/calc/dragon"
}

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/dragon' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":60,"early_infarct_signs":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hyperdense_artery":false,"nihss":3,"onset_to_treatment_min":60,"prestroke_mrs_gt_1":false},{"age":60,"early_infarct_signs":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hyperdense_artery":false,"nihss":3,"onset_to_treatment_min":60,"prestroke_mrs_gt_1":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/dragon' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":60,"early_infarct_signs":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hyperdense_artery":false,"nihss":3,"onset_to_treatment_min":60,"prestroke_mrs_gt_1":false},{"age":60,"early_infarct_signs":false,"glucose_mg_dl":108,"glucose_mmol_l":6,"hyperdense_artery":false,"nihss":3,"onset_to_treatment_min":60,"prestroke_mrs_gt_1":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 $0.005 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%2Fdragon&method=POST
const res = await pay("https://api.magentlab.com/api/calc/dragon", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 60,
        "early_infarct_signs": false,
        "glucose_mg_dl": 108,
        "glucose_mmol_l": 6,
        "hyperdense_artery": false,
        "nihss": 3,
        "onset_to_treatment_min": 60,
        "prestroke_mrs_gt_1": false
      },
      {
        "age": 60,
        "early_infarct_signs": false,
        "glucose_mg_dl": 108,
        "glucose_mmol_l": 6,
        "hyperdense_artery": false,
        "nihss": 3,
        "onset_to_treatment_min": 60,
        "prestroke_mrs_gt_1": 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 $0.005 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/dragon",
        json={
            "items": [
                {
                    "age": 60,
                    "early_infarct_signs": False,
                    "glucose_mg_dl": 108,
                    "glucose_mmol_l": 6,
                    "hyperdense_artery": False,
                    "nihss": 3,
                    "onset_to_treatment_min": 60,
                    "prestroke_mrs_gt_1": False,
                },
                {
                    "age": 60,
                    "early_infarct_signs": False,
                    "glucose_mg_dl": 108,
                    "glucose_mmol_l": 6,
                    "hyperdense_artery": False,
                    "nihss": 3,
                    "onset_to_treatment_min": 60,
                    "prestroke_mrs_gt_1": False,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

When	Result	HTTP	Time	Price
3 h ago	Passed	402	255 ms	$0.005
8 h ago	Passed	402	261 ms	$0.005
12 h ago	Passed	402	305 ms	$0.005
16 h ago	Passed	402	149 ms	$0.005
20 h ago	Passed	402	241 ms	$0.005

Show 10 older checks

25 h ago	Passed	402	384 ms	$0.005
29 h ago	Passed	402	472 ms	$0.005
33 h ago	Passed	402	351 ms	$0.005
37 h ago	Passed	402	162 ms	$0.005
42 h ago	Passed	402	248 ms	$0.005
46 h ago	Passed	402	145 ms	$0.005
2 days ago	Passed	402	271 ms	$0.005
2 days ago	Passed	402	483 ms	$0.005
2 days ago	Passed	402	310 ms	$0.005
3 days ago	Passed	402	161 ms	$0.005

Trust score 78/ 100

Availability (30-day uptime)		30 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		3 / 15
Charges what it lists		10 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.005 per call
Listed at: $0.005
Token: USDC
Networks: Base
Pays to: 0x836B…9Ee2

Real usage

Paying agents: 1 in 30 days
Paid calls: 3 in 30 days
Last paid call: 4 days ago

Source: x402 Bazaar settlement data.

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Trust score

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