ToolVet
71trust / 100

Calc Shanghai

by magent in Documents & files

x402 APIPassing, checked 8 min ago

Antzelevitch 2016 Shanghai Score System (Table 2) for Brugada syndrome. Caller assigns ECG (spontaneous type 1 3.5, fever type 1 3, drug-converted type 2/3 2; required; highest only), clinical history (0–3), family history (0–2), and pathogenic BrS-gene mutation (0.5). Bands: probable_definite ≥3.5, possible 2–3. magent does not read tracings. Not a diagnosis or ICD indication. Not the ERS Table 5 score.

POST
https://api.magentlab.com/api/calc/shanghai
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
227 ms
493 ms slowest 5%
Last check
Passed
8 min ago, next in 25 min

Run a free test callHow 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/shanghai

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/shanghai
content-type: application/json

{
  "items": [
    {
      "clinical": "none",
      "ecg_pattern": "spontaneous_type1",
      "family": "none",
      "pathogenic_mutation": false
    },
    {
      "clinical": "none",
      "ecg_pattern": "spontaneous_type1",
      "family": "none",
      "pathogenic_mutation": false
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 98 lines
{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Antzelevitch C, Yan GX, Ackerman MJ, Borggrefe M, Corrado D, Guo J, et al.",
        "doi": "10.1016/j.hrthm.2016.05.024",
        "id": "antzelevitch-2016",
        "pmid": "27423412",
        "source": "Heart Rhythm. 2016;13(10):e295-e324",
        "title": "J-Wave syndromes expert consensus conference report: Emerging concepts and gaps in knowledge"
      },
      "clinical": "none",
      "components": [
        {
          "factor": "ecg_pattern",
          "points": 3.5,
          "present": true,
          "value": "spontaneous_type1"
        },
        {
          "factor": "clinical",
          "points": 0,
          "present": false,
          "value": "none"
        },
        {
          "factor": "family",
          "points": 0,
          "present": false,
          "value": "none"
        },
        {
          "factor": "pathogenic_mutation",
          "points": 0,
          "present": false,
          "value": 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.",
      "ecg_pattern": "spontaneous_type1",
      "family": "none",
      "formula": "shanghai",
      "formula_expression": "Shanghai Table 2 (Antzelevitch 2016): ECG required, highest only (spontaneous_type1 3.5, fever_type1 3, drug_converted_type2_3 2) + clinical highest only (vf_arrest 3, nocturnal_agonal 2, arrhythmic_syncope 2, unclear_syncope 1, af_under_30 0.5, none 0) + family highest only (relative_definite_brs 2, suspicious_scd 1, unexplained_scd_under_45 0.5, none 0) + pathogenic_mutation 0.5; max 9; probable_definite ≥3.5, possible 2–3, nondiagnostic <2. Not ERS Table 5",
      "max_score": 9,
      "pathogenic_mutation": false,
      "score": 3.5,
      "shanghai_band": "probable_definite"
    },
    {
      "citation": {
        "authors": "Antzelevitch C, Yan GX, Ackerman MJ, Borggrefe M, Corrado D, Guo J, et al.",
        "doi": "10.1016/j.hrthm.2016.05.024",
        "id": "antzelevitch-2016",
        "pmid": "27423412",
        "source": "Heart Rhythm. 2016;13(10):e295-e324",
        "title": "J-Wave syndromes expert consensus conference report: Emerging concepts and gaps in knowledge"
      },
      "clinical": "none",
      "components": [
        {
          "factor": "ecg_pattern",
          "points": 3.5,
          "present": true,
          "value": "spontaneous_type1"
        },
        {
          "factor": "clinical",
          "points": 0,
          "present": false,
          "value": "none"
        },
        {
          "factor": "family",
          "points": 0,
          "present": false,
          "value": "none"
        },
        {
          "factor": "pathogenic_mutation",
          "points": 0,
          "present": false,
          "value": 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.",
      "ecg_pattern": "spontaneous_type1",
      "family": "none",
      "formula": "shanghai",
      "formula_expression": "Shanghai Table 2 (Antzelevitch 2016): ECG required, highest only (spontaneous_type1 3.5, fever_type1 3, drug_converted_type2_3 2) + clinical highest only (vf_arrest 3, nocturnal_agonal 2, arrhythmic_syncope 2, unclear_syncope 1, af_under_30 0.5, none 0) + family highest only (relative_definite_brs 2, suspicious_scd 1, unexplained_scd_under_45 0.5, none 0) + pathogenic_mutation 0.5; max 9; probable_definite ≥3.5, possible 2–3, nondiagnostic <2. Not ERS Table 5",
      "max_score": 9,
      "pathogenic_mutation": false,
      "score": 3.5,
      "shanghai_band": "probable_definite"
    }
  ],
  "path": "/api/calc/shanghai"
}

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/shanghai' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"clinical":"none","ecg_pattern":"spontaneous_type1","family":"none","pathogenic_mutation":false},{"clinical":"none","ecg_pattern":"spontaneous_type1","family":"none","pathogenic_mutation":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/shanghai' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"clinical":"none","ecg_pattern":"spontaneous_type1","family":"none","pathogenic_mutation":false},{"clinical":"none","ecg_pattern":"spontaneous_type1","family":"none","pathogenic_mutation":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%2Fshanghai&method=POST
const res = await pay("https://api.magentlab.com/api/calc/shanghai", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "clinical": "none",
        "ecg_pattern": "spontaneous_type1",
        "family": "none",
        "pathogenic_mutation": false
      },
      {
        "clinical": "none",
        "ecg_pattern": "spontaneous_type1",
        "family": "none",
        "pathogenic_mutation": 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/shanghai",
        json={
            "items": [
                {
                    "clinical": "none",
                    "ecg_pattern": "spontaneous_type1",
                    "family": "none",
                    "pathogenic_mutation": False,
                },
                {
                    "clinical": "none",
                    "ecg_pattern": "spontaneous_type1",
                    "family": "none",
                    "pathogenic_mutation": 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
8 min agoPassed402493 ms$0.007
5 h agoPassed402250 ms$0.007
10 h agoPassed402240 ms$0.007
14 h agoPassed402163 ms$0.007
19 h agoPassed402234 ms$0.007
Show 10 older checks
23 h agoPassed402262 ms$0.007
28 h agoPassed402253 ms$0.007
32 h agoPassed402163 ms$0.007
36 h agoPassed402155 ms$0.007
40 h agoPassed402233 ms$0.007
45 h agoPassed402263 ms$0.007
2 days agoPassed402663 ms$0.007
2 days agoPassed402227 ms$0.007
2 days agoPassed402277 ms$0.007
3 days agoPassed402327 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007