69trust / 100

Calc Ottawa Copd

x402 APIFailing, checked 47 min ago

Ottawa COPD Risk Scale (Stiell 2014 derivation). Ten caller-assigned flags: CABG 1, PVD intervention 1, intubation 2, arrival HR >=110 2, too ill to walk or HR >=120 (SaO2 <90%) 2, ischemic ECG 2, CXR congestion 1, Hb <100 g/L 3, urea >=12 1, serum CO2 >=35 1; max 16. Bands low/medium/high/very high with Table 8 SAE percents when published. Not a medical device or admission order; not BAP-65 or DECAF; not the 2018 validation as formula. magent does not walk the patient or read the ECG or CXR.

POST

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

Price: $0.007; per call in USDC
Uptime: 97.0%; last 30 days
Response time: 171 ms; 458 ms slowest 5%
Last check: Failed; 47 min ago, next any minute now

Run a free test call How to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 47 min ago: Timed out

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

How to call it

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

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/ottawa_copd
content-type: application/json

{
  "items": [
    {
      "cabg": false,
      "hemoglobin_lt_100": false,
      "hr_arrival_ge_110": false,
      "intubation_respiratory": false,
      "ischemic_ecg": false,
      "pulmonary_congestion": false,
      "pvd_intervention": false,
      "serum_co2_ge_35": false,
      "too_ill_to_walk": false,
      "urea_ge_12": false
    },
    {
      "cabg": false,
      "hemoglobin_lt_100": false,
      "hr_arrival_ge_110": false,
      "intubation_respiratory": false,
      "ischemic_ecg": false,
      "pulmonary_congestion": false,
      "pvd_intervention": false,
      "serum_co2_ge_35": false,
      "too_ill_to_walk": false,
      "urea_ge_12": 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, 144 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Stiell IG, Clement CM, Aaron SD, Rowe BH, Perry JJ, Brison RJ, Calder LA, Lang E, Borgundvaag B, Forster AJ, Wells GA",
        "doi": "10.1503/cmaj.130968",
        "id": "stiell-2014",
        "pmid": "24549463",
        "source": "CMAJ. 2014;186(6):E193-E204",
        "title": "Clinical characteristics associated with adverse events in patients with exacerbation of chronic obstructive pulmonary disease: a prospective cohort study"
      },
      "components": [
        {
          "factor": "cabg",
          "points": 0,
          "present": false
        },
        {
          "factor": "pvd_intervention",
          "points": 0,
          "present": false
        },
        {
          "factor": "intubation_respiratory",
          "points": 0,
          "present": false
        },
        {
          "factor": "hr_arrival_ge_110",
          "points": 0,
          "present": false
        },
        {
          "factor": "too_ill_to_walk",
          "points": 0,
          "present": false
        },
        {
          "factor": "ischemic_ecg",
          "points": 0,
          "present": false
        },
        {
          "factor": "pulmonary_congestion",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemoglobin_lt_100",
          "points": 0,
          "present": false
        },
        {
          "factor": "urea_ge_12",
          "points": 0,
          "present": false
        },
        {
          "factor": "serum_co2_ge_35",
          "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": "ottawa_copd",
      "formula_expression": "ottawa_copd = cabg(1) + pvd_intervention(1) + intubation_respiratory(2) + hr_arrival_ge_110(2) + too_ill_to_walk(2) + ischemic_ecg(2) + pulmonary_congestion(1) + hemoglobin_lt_100(3) + urea_ge_12(1) + serum_co2_ge_35(1); Stiell 2014 derivation Tables 6-8; max 16; SAE 2.2% (score 0) to 91.4% (score 10); score 9 and >10 SAE not published; admission thresholds of total score 1, 2, or 3 had sensitivities 91.2 / 80.9 / 60.3%",
      "max_score": 16,
      "ottawa_copd_band": "low",
      "sae_percent": 2.2,
      "score": 0
    },
    {
      "citation": {
        "authors": "Stiell IG, Clement CM, Aaron SD, Rowe BH, Perry JJ, Brison RJ, Calder LA, Lang E, Borgundvaag B, Forster AJ, Wells GA",
        "doi": "10.1503/cmaj.130968",
        "id": "stiell-2014",
        "pmid": "24549463",
        "source": "CMAJ. 2014;186(6):E193-E204",
        "title": "Clinical characteristics associated with adverse events in patients with exacerbation of chronic obstructive pulmonary disease: a prospective cohort study"
      },
      "components": [
        {
          "factor": "cabg",
          "points": 0,
          "present": false
        },
        {
          "factor": "pvd_intervention",
          "points": 0,
          "present": false
        },
        {
          "factor": "intubation_respiratory",
          "points": 0,
          "present": false
        },
        {
          "factor": "hr_arrival_ge_110",
          "points": 0,
          "present": false
        },
        {
          "factor": "too_ill_to_walk",
          "points": 0,
          "present": false
        },
        {
          "factor": "ischemic_ecg",
          "points": 0,
          "present": false
        },
        {
          "factor": "pulmonary_congestion",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemoglobin_lt_100",
          "points": 0,
          "present": false
        },
        {
          "factor": "urea_ge_12",
          "points": 0,
          "present": false
        },
        {
          "factor": "serum_co2_ge_35",
          "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": "ottawa_copd",
      "formula_expression": "ottawa_copd = cabg(1) + pvd_intervention(1) + intubation_respiratory(2) + hr_arrival_ge_110(2) + too_ill_to_walk(2) + ischemic_ecg(2) + pulmonary_congestion(1) + hemoglobin_lt_100(3) + urea_ge_12(1) + serum_co2_ge_35(1); Stiell 2014 derivation Tables 6-8; max 16; SAE 2.2% (score 0) to 91.4% (score 10); score 9 and >10 SAE not published; admission thresholds of total score 1, 2, or 3 had sensitivities 91.2 / 80.9 / 60.3%",
      "max_score": 16,
      "ottawa_copd_band": "low",
      "sae_percent": 2.2,
      "score": 0
    }
  ],
  "path": "/api/calc/ottawa_copd"
}

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/ottawa_copd' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"cabg":false,"hemoglobin_lt_100":false,"hr_arrival_ge_110":false,"intubation_respiratory":false,"ischemic_ecg":false,"pulmonary_congestion":false,"pvd_intervention":false,"serum_co2_ge_35":false,"too_ill_to_walk":false,"urea_ge_12":false},{"cabg":false,"hemoglobin_lt_100":false,"hr_arrival_ge_110":false,"intubation_respiratory":false,"ischemic_ecg":false,"pulmonary_congestion":false,"pvd_intervention":false,"serum_co2_ge_35":false,"too_ill_to_walk":false,"urea_ge_12":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/ottawa_copd' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"cabg":false,"hemoglobin_lt_100":false,"hr_arrival_ge_110":false,"intubation_respiratory":false,"ischemic_ecg":false,"pulmonary_congestion":false,"pvd_intervention":false,"serum_co2_ge_35":false,"too_ill_to_walk":false,"urea_ge_12":false},{"cabg":false,"hemoglobin_lt_100":false,"hr_arrival_ge_110":false,"intubation_respiratory":false,"ischemic_ecg":false,"pulmonary_congestion":false,"pvd_intervention":false,"serum_co2_ge_35":false,"too_ill_to_walk":false,"urea_ge_12":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%2Fottawa_copd&method=POST
const res = await pay("https://api.magentlab.com/api/calc/ottawa_copd", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "cabg": false,
        "hemoglobin_lt_100": false,
        "hr_arrival_ge_110": false,
        "intubation_respiratory": false,
        "ischemic_ecg": false,
        "pulmonary_congestion": false,
        "pvd_intervention": false,
        "serum_co2_ge_35": false,
        "too_ill_to_walk": false,
        "urea_ge_12": false
      },
      {
        "cabg": false,
        "hemoglobin_lt_100": false,
        "hr_arrival_ge_110": false,
        "intubation_respiratory": false,
        "ischemic_ecg": false,
        "pulmonary_congestion": false,
        "pvd_intervention": false,
        "serum_co2_ge_35": false,
        "too_ill_to_walk": false,
        "urea_ge_12": 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/ottawa_copd",
        json={
            "items": [
                {
                    "cabg": False,
                    "hemoglobin_lt_100": False,
                    "hr_arrival_ge_110": False,
                    "intubation_respiratory": False,
                    "ischemic_ecg": False,
                    "pulmonary_congestion": False,
                    "pvd_intervention": False,
                    "serum_co2_ge_35": False,
                    "too_ill_to_walk": False,
                    "urea_ge_12": False,
                },
                {
                    "cabg": False,
                    "hemoglobin_lt_100": False,
                    "hr_arrival_ge_110": False,
                    "intubation_respiratory": False,
                    "ischemic_ecg": False,
                    "pulmonary_congestion": False,
                    "pvd_intervention": False,
                    "serum_co2_ge_35": False,
                    "too_ill_to_walk": False,
                    "urea_ge_12": 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
47 min ago	Timed out	-	-	-
6 h ago	Passed	402	165 ms	$0.007
10 h ago	Passed	402	143 ms	$0.007
15 h ago	Passed	402	449 ms	$0.007
20 h ago	Passed	402	137 ms	$0.007

Show 10 older checks

24 h ago	Passed	402	686 ms	$0.007
29 h ago	Passed	402	252 ms	$0.007
33 h ago	Passed	402	362 ms	$0.007
37 h ago	Passed	402	141 ms	$0.007
41 h ago	Passed	402	165 ms	$0.007
46 h ago	Passed	402	172 ms	$0.007
2 days ago	Passed	402	282 ms	$0.007
2 days ago	Passed	402	171 ms	$0.007
2 days ago	Passed	402	146 ms	$0.007
3 days ago	Passed	402	148 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 69/ 100

Availability (30-day uptime)		29 / 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: 4 days ago

Source: x402 Bazaar settlement data.

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Trust score

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