77trust / 100

Calc Canadian Tia

by magent in Other

x402 APIPassing, checked 1 h ago

Perry 2021 Canadian TIA Score (Table 1) for 7-day stroke or carotid revascularization after TIA. Clinical: first TIA 2, symptoms >=10 min 2, past carotid stenosis 2, antiplatelet 3, gait 1, unilateral weakness 1, vertigo -3, diastolic >=110 3, dysarthria/aphasia 1. Investigations: AF on ECG 2, infarct on CT 1, platelets >=400 2, glucose >=15 mmol/L 3. Age required, 0 points. Total -3 to 23. Bands <=3 low (0.5%), 4-8 medium (2.3%), >=9 high (5.9%). Not ABCD2. Not a diagnosis or admit order.

POST

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

Price: $0.005; per call in USDC
Uptime: 96.8%; last 30 days
Response time: 270 ms; 459 ms slowest 5%
Last check: Passed; 1 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/canadian_tia

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/canadian_tia
content-type: application/json

{
  "items": [
    {
      "af_on_ecg": false,
      "age": 70,
      "carotid_stenosis": false,
      "diastolic_mm_hg": 80,
      "dysarthria_or_aphasia": false,
      "first_tia": false,
      "gait_disturbance": false,
      "glucose_mg_dl": 90,
      "glucose_mmol_l": 5,
      "infarct_on_ct": false,
      "on_antiplatelet": false,
      "platelets_10e9_l": 200,
      "symptoms_ge_10_min": false,
      "unilateral_weakness": false,
      "vertigo": false
    },
    {
      "af_on_ecg": false,
      "age": 70,
      "carotid_stenosis": false,
      "diastolic_mm_hg": 80,
      "dysarthria_or_aphasia": false,
      "first_tia": false,
      "gait_disturbance": false,
      "glucose_mg_dl": 90,
      "glucose_mmol_l": 5,
      "infarct_on_ct": false,
      "on_antiplatelet": false,
      "platelets_10e9_l": 200,
      "symptoms_ge_10_min": false,
      "unilateral_weakness": false,
      "vertigo": 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, 186 lines

{
  "count": 2,
  "items": [
    {
      "age_years": 70,
      "citation": {
        "authors": "Perry JJ, Sivilotti MLA, Émond M, Stiell IG, Stotts G, Lee J, Worster A, Morris J, Cheung KW, Jin AY, Oczkowski WJ, Sahlas DJ, Murray HE, Mackey A, Verreault S, Camden MC, Yip S, Teal P, Gladstone DJ, Boulos MI, Chagnon N, Shouldice E, Atzema C, Slaoui T, Teitlebaum J, Abdulaziz K, Nemnom MJ, Wells GA, Sharma M",
        "doi": "10.1136/bmj.n49",
        "id": "perry-2021",
        "pmid": "33541890",
        "source": "BMJ. 2021;372:n49",
        "title": "Prospective validation of Canadian TIA Score and comparison with ABCD2 and ABCD2i for subsequent stroke risk after transient ischaemic attack: multicentre prospective cohort study"
      },
      "components": [
        {
          "factor": "first_tia",
          "points": 0,
          "present": false
        },
        {
          "factor": "symptoms_ge_10_min",
          "points": 0,
          "present": false
        },
        {
          "factor": "carotid_stenosis",
          "points": 0,
          "present": false
        },
        {
          "factor": "on_antiplatelet",
          "points": 0,
          "present": false
        },
        {
          "factor": "gait_disturbance",
          "points": 0,
          "present": false
        },
        {
          "factor": "unilateral_weakness",
          "points": 0,
          "present": false
        },
        {
          "factor": "vertigo",
          "points": 0,
          "present": false
        },
        {
          "factor": "diastolic_mm_hg",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "dysarthria_or_aphasia",
          "points": 0,
          "present": false
        },
        {
          "factor": "af_on_ecg",
          "points": 0,
          "present": false
        },
        {
          "factor": "infarct_on_ct",
          "points": 0,
          "present": false
        },
        {
          "factor": "platelets_10e9_l",
          "points": 0,
          "present": false,
          "value": 200
        },
        {
          "factor": "glucose",
          "points": 0,
          "present": false,
          "value": 5
        }
      ],
      "diastolic_mm_hg": 80,
      "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": "canadian_tia",
      "formula_expression": "Canadian TIA Score = first_tia 2 + symptoms_ge_10_min 2 + carotid_stenosis 2 + on_antiplatelet 3 + gait_disturbance 1 + unilateral_weakness 1 + vertigo -3 + (diastolic_mm_hg >= 110) 3 + dysarthria_or_aphasia 1 + af_on_ecg 2 + infarct_on_ct 1 + (platelets_10e9_l >= 400) 2 + (glucose >= 15 mmol/L) 3; age 18-120 required, 0 points; total -3 to 23; tia_risk low <=3 (0.5%), medium 4-8 (2.3%), high >=9 (5.9%) 7-day stroke or carotid revascularization (Perry 2021 Table 1 / Table 4); max 23",
      "glucose_mmol_l": 5,
      "max_score": 23,
      "platelets_10e9_l": 200,
      "score": 0,
      "tia_risk": "low"
    },
    {
      "age_years": 70,
      "citation": {
        "authors": "Perry JJ, Sivilotti MLA, Émond M, Stiell IG, Stotts G, Lee J, Worster A, Morris J, Cheung KW, Jin AY, Oczkowski WJ, Sahlas DJ, Murray HE, Mackey A, Verreault S, Camden MC, Yip S, Teal P, Gladstone DJ, Boulos MI, Chagnon N, Shouldice E, Atzema C, Slaoui T, Teitlebaum J, Abdulaziz K, Nemnom MJ, Wells GA, Sharma M",
        "doi": "10.1136/bmj.n49",
        "id": "perry-2021",
        "pmid": "33541890",
        "source": "BMJ. 2021;372:n49",
        "title": "Prospective validation of Canadian TIA Score and comparison with ABCD2 and ABCD2i for subsequent stroke risk after transient ischaemic attack: multicentre prospective cohort study"
      },
      "components": [
        {
          "factor": "first_tia",
          "points": 0,
          "present": false
        },
        {
          "factor": "symptoms_ge_10_min",
          "points": 0,
          "present": false
        },
        {
          "factor": "carotid_stenosis",
          "points": 0,
          "present": false
        },
        {
          "factor": "on_antiplatelet",
          "points": 0,
          "present": false
        },
        {
          "factor": "gait_disturbance",
          "points": 0,
          "present": false
        },
        {
          "factor": "unilateral_weakness",
          "points": 0,
          "present": false
        },
        {
          "factor": "vertigo",
          "points": 0,
          "present": false
        },
        {
          "factor": "diastolic_mm_hg",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "dysarthria_or_aphasia",
          "points": 0,
          "present": false
        },
        {
          "factor": "af_on_ecg",
          "points": 0,
          "present": false
        },
        {
          "factor": "infarct_on_ct",
          "points": 0,
          "present": false
        },
        {
          "factor": "platelets_10e9_l",
          "points": 0,
          "present": false,
          "value": 200
        },
        {
          "factor": "glucose",
          "points": 0,
          "present": false,
          "value": 5
        }
      ],
      "diastolic_mm_hg": 80,
      "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": "canadian_tia",
      "formula_expression": "Canadian TIA Score = first_tia 2 + symptoms_ge_10_min 2 + carotid_stenosis 2 + on_antiplatelet 3 + gait_disturbance 1 + unilateral_weakness 1 + vertigo -3 + (diastolic_mm_hg >= 110) 3 + dysarthria_or_aphasia 1 + af_on_ecg 2 + infarct_on_ct 1 + (platelets_10e9_l >= 400) 2 + (glucose >= 15 mmol/L) 3; age 18-120 required, 0 points; total -3 to 23; tia_risk low <=3 (0.5%), medium 4-8 (2.3%), high >=9 (5.9%) 7-day stroke or carotid revascularization (Perry 2021 Table 1 / Table 4); max 23",
      "glucose_mmol_l": 5,
      "max_score": 23,
      "platelets_10e9_l": 200,
      "score": 0,
      "tia_risk": "low"
    }
  ],
  "path": "/api/calc/canadian_tia"
}

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/canadian_tia' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"af_on_ecg":false,"age":70,"carotid_stenosis":false,"diastolic_mm_hg":80,"dysarthria_or_aphasia":false,"first_tia":false,"gait_disturbance":false,"glucose_mg_dl":90,"glucose_mmol_l":5,"infarct_on_ct":false,"on_antiplatelet":false,"platelets_10e9_l":200,"symptoms_ge_10_min":false,"unilateral_weakness":false,"vertigo":false},{"af_on_ecg":false,"age":70,"carotid_stenosis":false,"diastolic_mm_hg":80,"dysarthria_or_aphasia":false,"first_tia":false,"gait_disturbance":false,"glucose_mg_dl":90,"glucose_mmol_l":5,"infarct_on_ct":false,"on_antiplatelet":false,"platelets_10e9_l":200,"symptoms_ge_10_min":false,"unilateral_weakness":false,"vertigo":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/canadian_tia' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"af_on_ecg":false,"age":70,"carotid_stenosis":false,"diastolic_mm_hg":80,"dysarthria_or_aphasia":false,"first_tia":false,"gait_disturbance":false,"glucose_mg_dl":90,"glucose_mmol_l":5,"infarct_on_ct":false,"on_antiplatelet":false,"platelets_10e9_l":200,"symptoms_ge_10_min":false,"unilateral_weakness":false,"vertigo":false},{"af_on_ecg":false,"age":70,"carotid_stenosis":false,"diastolic_mm_hg":80,"dysarthria_or_aphasia":false,"first_tia":false,"gait_disturbance":false,"glucose_mg_dl":90,"glucose_mmol_l":5,"infarct_on_ct":false,"on_antiplatelet":false,"platelets_10e9_l":200,"symptoms_ge_10_min":false,"unilateral_weakness":false,"vertigo":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%2Fcanadian_tia&method=POST
const res = await pay("https://api.magentlab.com/api/calc/canadian_tia", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "af_on_ecg": false,
        "age": 70,
        "carotid_stenosis": false,
        "diastolic_mm_hg": 80,
        "dysarthria_or_aphasia": false,
        "first_tia": false,
        "gait_disturbance": false,
        "glucose_mg_dl": 90,
        "glucose_mmol_l": 5,
        "infarct_on_ct": false,
        "on_antiplatelet": false,
        "platelets_10e9_l": 200,
        "symptoms_ge_10_min": false,
        "unilateral_weakness": false,
        "vertigo": false
      },
      {
        "af_on_ecg": false,
        "age": 70,
        "carotid_stenosis": false,
        "diastolic_mm_hg": 80,
        "dysarthria_or_aphasia": false,
        "first_tia": false,
        "gait_disturbance": false,
        "glucose_mg_dl": 90,
        "glucose_mmol_l": 5,
        "infarct_on_ct": false,
        "on_antiplatelet": false,
        "platelets_10e9_l": 200,
        "symptoms_ge_10_min": false,
        "unilateral_weakness": false,
        "vertigo": 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/canadian_tia",
        json={
            "items": [
                {
                    "af_on_ecg": False,
                    "age": 70,
                    "carotid_stenosis": False,
                    "diastolic_mm_hg": 80,
                    "dysarthria_or_aphasia": False,
                    "first_tia": False,
                    "gait_disturbance": False,
                    "glucose_mg_dl": 90,
                    "glucose_mmol_l": 5,
                    "infarct_on_ct": False,
                    "on_antiplatelet": False,
                    "platelets_10e9_l": 200,
                    "symptoms_ge_10_min": False,
                    "unilateral_weakness": False,
                    "vertigo": False,
                },
                {
                    "af_on_ecg": False,
                    "age": 70,
                    "carotid_stenosis": False,
                    "diastolic_mm_hg": 80,
                    "dysarthria_or_aphasia": False,
                    "first_tia": False,
                    "gait_disturbance": False,
                    "glucose_mg_dl": 90,
                    "glucose_mmol_l": 5,
                    "infarct_on_ct": False,
                    "on_antiplatelet": False,
                    "platelets_10e9_l": 200,
                    "symptoms_ge_10_min": False,
                    "unilateral_weakness": False,
                    "vertigo": 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
1 h ago	Passed	402	237 ms	$0.005
6 h ago	Passed	402	440 ms	$0.005
11 h ago	Passed	402	233 ms	$0.005
15 h ago	Passed	402	167 ms	$0.005
19 h ago	Passed	402	276 ms	$0.005

Show 10 older checks

23 h ago	Passed	402	356 ms	$0.005
28 h ago	Passed	402	402 ms	$0.005
32 h ago	Passed	402	307 ms	$0.005
36 h ago	Passed	402	313 ms	$0.005
40 h ago	Passed	402	160 ms	$0.005
45 h ago	Passed	402	142 ms	$0.005
2 days ago	Passed	402	226 ms	$0.005
2 days ago	Passed	402	292 ms	$0.005
2 days ago	Passed	402	422 ms	$0.005
3 days ago	Passed	402	270 ms	$0.005

Trust score 77/ 100

Availability (30-day uptime)		29 / 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

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