ToolVet
71trust / 100

Calc Rope

by magent in Security & trust

x402 APIPassing, checked 2 h ago

ROPE (Risk of Paradoxical Embolism; Kent 2013 Neurology Table 4) from age decades (18-29 5, 30-39 4, 40-49 3, 50-59 2, 60-69 1, >=70 0) plus five caller-assigned 1-point factors (no hypertension, no diabetes, no prior stroke/TIA, nonsmoker, cortical infarct). Score 0-10 with abstract groupings 0-3, 4-8 residual, and 9-10. Not a PFO diagnosis, not a closure indication, not PASCAL. magent does not read imaging or a smoking history.

POST
https://api.magentlab.com/api/calc/rope
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
224 ms
719 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

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

How to call it

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

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/rope
content-type: application/json

{
  "items": [
    {
      "age": 70,
      "cortical_infarct": false,
      "no_diabetes": false,
      "no_hypertension": false,
      "no_prior_stroke_tia": false,
      "nonsmoker": false
    },
    {
      "age": 70,
      "cortical_infarct": false,
      "no_diabetes": false,
      "no_hypertension": false,
      "no_prior_stroke_tia": false,
      "nonsmoker": false
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 106 lines
{
  "count": 2,
  "items": [
    {
      "age_years": 70,
      "citation": {
        "authors": "Kent DM, Ruthazer R, Weimar C, Mas JL, Serena J, Homma S, Di Angelantonio E, Di Tullio MR, Lutz JS, Elkind MSV, Griffith J, Jaigobin C, Mattle HP, Michel P, Mono ML, Nedeltchev K, Papetti F, Thaler DE",
        "doi": "10.1212/WNL.0b013e3182a08d59",
        "id": "kent-2013",
        "pmid": "23864310",
        "source": "Neurology. 2013;81(7):619-625",
        "title": "An index to identify stroke-related vs incidental patent foramen ovale in cryptogenic stroke"
      },
      "components": [
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 70
        },
        {
          "factor": "no_hypertension",
          "points": 0,
          "present": false
        },
        {
          "factor": "no_diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "no_prior_stroke_tia",
          "points": 0,
          "present": false
        },
        {
          "factor": "nonsmoker",
          "points": 0,
          "present": false
        },
        {
          "factor": "cortical_infarct",
          "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": "rope",
      "formula_expression": "ROPE = age_points + no_hypertension 1 + no_diabetes 1 + no_prior_stroke_tia 1 + nonsmoker 1 + cortical_infarct 1; age 18-29 5, 30-39 4, 40-49 3, 50-59 2, 60-69 1, >=70 0; Kent 2013 Table 4; max 10",
      "max_score": 10,
      "rope_stratum": "0_to_3",
      "score": 0
    },
    {
      "age_years": 70,
      "citation": {
        "authors": "Kent DM, Ruthazer R, Weimar C, Mas JL, Serena J, Homma S, Di Angelantonio E, Di Tullio MR, Lutz JS, Elkind MSV, Griffith J, Jaigobin C, Mattle HP, Michel P, Mono ML, Nedeltchev K, Papetti F, Thaler DE",
        "doi": "10.1212/WNL.0b013e3182a08d59",
        "id": "kent-2013",
        "pmid": "23864310",
        "source": "Neurology. 2013;81(7):619-625",
        "title": "An index to identify stroke-related vs incidental patent foramen ovale in cryptogenic stroke"
      },
      "components": [
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 70
        },
        {
          "factor": "no_hypertension",
          "points": 0,
          "present": false
        },
        {
          "factor": "no_diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "no_prior_stroke_tia",
          "points": 0,
          "present": false
        },
        {
          "factor": "nonsmoker",
          "points": 0,
          "present": false
        },
        {
          "factor": "cortical_infarct",
          "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": "rope",
      "formula_expression": "ROPE = age_points + no_hypertension 1 + no_diabetes 1 + no_prior_stroke_tia 1 + nonsmoker 1 + cortical_infarct 1; age 18-29 5, 30-39 4, 40-49 3, 50-59 2, 60-69 1, >=70 0; Kent 2013 Table 4; max 10",
      "max_score": 10,
      "rope_stratum": "0_to_3",
      "score": 0
    }
  ],
  "path": "/api/calc/rope"
}

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/rope' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":70,"cortical_infarct":false,"no_diabetes":false,"no_hypertension":false,"no_prior_stroke_tia":false,"nonsmoker":false},{"age":70,"cortical_infarct":false,"no_diabetes":false,"no_hypertension":false,"no_prior_stroke_tia":false,"nonsmoker":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/rope' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":70,"cortical_infarct":false,"no_diabetes":false,"no_hypertension":false,"no_prior_stroke_tia":false,"nonsmoker":false},{"age":70,"cortical_infarct":false,"no_diabetes":false,"no_hypertension":false,"no_prior_stroke_tia":false,"nonsmoker":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%2Frope&method=POST
const res = await pay("https://api.magentlab.com/api/calc/rope", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 70,
        "cortical_infarct": false,
        "no_diabetes": false,
        "no_hypertension": false,
        "no_prior_stroke_tia": false,
        "nonsmoker": false
      },
      {
        "age": 70,
        "cortical_infarct": false,
        "no_diabetes": false,
        "no_hypertension": false,
        "no_prior_stroke_tia": false,
        "nonsmoker": 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/rope",
        json={
            "items": [
                {
                    "age": 70,
                    "cortical_infarct": False,
                    "no_diabetes": False,
                    "no_hypertension": False,
                    "no_prior_stroke_tia": False,
                    "nonsmoker": False,
                },
                {
                    "age": 70,
                    "cortical_infarct": False,
                    "no_diabetes": False,
                    "no_hypertension": False,
                    "no_prior_stroke_tia": False,
                    "nonsmoker": 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

WhenResultHTTPTimePrice
2 h agoPassed402241 ms$0.007
6 h agoPassed402215 ms$0.007
11 h agoPassed402343 ms$0.007
16 h agoPassed402326 ms$0.007
20 h agoPassed402945 ms$0.007
Show 10 older checks
24 h agoPassed402230 ms$0.007
29 h agoPassed402236 ms$0.007
33 h agoPassed402139 ms$0.007
37 h agoPassed402182 ms$0.007
41 h agoPassed402719 ms$0.007
46 h agoPassed402250 ms$0.007
2 days agoPassed402361 ms$0.007
2 days agoPassed402300 ms$0.007
2 days agoPassed402236 ms$0.007
3 days agoPassed402150 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007