67trust / 100

Calc Dasi

by magent in Other

x402 APIFailing, checked 2 h ago

Hlatky 1989 Duke Activity Status Index. Twelve caller-assigned yes/no items (self-care through strenuous sports); Yes adds the Table I weight, No adds 0. Light housework is 2.70. DASI is the sum (0-58.2). Estimated peak VO2 mL/kg/min = 0.43 x DASI + 9.6. magent does not observe the patient. Not a functional-capacity assignment or exercise-test replacement.

POST

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

Price: $0.007; per call in USDC
Uptime: 91.4%; last 30 days
Response time: 263 ms; 529 ms slowest 5%
Last check: Failed; 2 h ago, next any minute now

Run a free test call How to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 2 h ago: Timed out

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

How to call it

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

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/dasi
content-type: application/json

{
  "items": [
    {
      "climb_stairs": false,
      "heavy_housework": false,
      "light_housework": false,
      "moderate_housework": false,
      "moderate_recreation": false,
      "run_short": false,
      "self_care": false,
      "sexual_relations": false,
      "strenuous_sports": false,
      "walk_blocks": false,
      "walk_indoors": false,
      "yardwork": false
    },
    {
      "climb_stairs": false,
      "heavy_housework": false,
      "light_housework": false,
      "moderate_housework": false,
      "moderate_recreation": false,
      "run_short": false,
      "self_care": false,
      "sexual_relations": false,
      "strenuous_sports": false,
      "walk_blocks": false,
      "walk_indoors": false,
      "yardwork": 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, 164 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Hlatky MA, Boineau RE, Higginbotham MB, Lee KL, Mark DB, Califf RM, Cobb FR, Pryor DB",
        "doi": "10.1016/0002-9149(89)90496-7",
        "id": "hlatky-1989",
        "pmid": "2782256",
        "source": "Am J Cardiol. 1989;64(10):651-654",
        "title": "A brief self-administered questionnaire to determine functional capacity (The Duke Activity Status Index)"
      },
      "components": [
        {
          "factor": "self_care",
          "points": 0,
          "present": false
        },
        {
          "factor": "walk_indoors",
          "points": 0,
          "present": false
        },
        {
          "factor": "walk_blocks",
          "points": 0,
          "present": false
        },
        {
          "factor": "climb_stairs",
          "points": 0,
          "present": false
        },
        {
          "factor": "run_short",
          "points": 0,
          "present": false
        },
        {
          "factor": "light_housework",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_housework",
          "points": 0,
          "present": false
        },
        {
          "factor": "heavy_housework",
          "points": 0,
          "present": false
        },
        {
          "factor": "yardwork",
          "points": 0,
          "present": false
        },
        {
          "factor": "sexual_relations",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_recreation",
          "points": 0,
          "present": false
        },
        {
          "factor": "strenuous_sports",
          "points": 0,
          "present": false
        }
      ],
      "dasi": 0,
      "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": "dasi",
      "formula_expression": "DASI = 2.75*self_care + 1.75*walk_indoors + 2.75*walk_blocks + 5.50*climb_stairs + 8.00*run_short + 2.70*light_housework + 3.50*moderate_housework + 8.00*heavy_housework + 4.50*yardwork + 5.25*sexual_relations + 6.00*moderate_recreation + 7.50*strenuous_sports (Yes = weight, No = 0); VO2peak_mL/kg/min = 0.43*DASI + 9.6 (Hlatky 1989 Table I)",
      "max_score": 58.2,
      "score": 0,
      "vo2peak_ml_kg_min": 9.6
    },
    {
      "citation": {
        "authors": "Hlatky MA, Boineau RE, Higginbotham MB, Lee KL, Mark DB, Califf RM, Cobb FR, Pryor DB",
        "doi": "10.1016/0002-9149(89)90496-7",
        "id": "hlatky-1989",
        "pmid": "2782256",
        "source": "Am J Cardiol. 1989;64(10):651-654",
        "title": "A brief self-administered questionnaire to determine functional capacity (The Duke Activity Status Index)"
      },
      "components": [
        {
          "factor": "self_care",
          "points": 0,
          "present": false
        },
        {
          "factor": "walk_indoors",
          "points": 0,
          "present": false
        },
        {
          "factor": "walk_blocks",
          "points": 0,
          "present": false
        },
        {
          "factor": "climb_stairs",
          "points": 0,
          "present": false
        },
        {
          "factor": "run_short",
          "points": 0,
          "present": false
        },
        {
          "factor": "light_housework",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_housework",
          "points": 0,
          "present": false
        },
        {
          "factor": "heavy_housework",
          "points": 0,
          "present": false
        },
        {
          "factor": "yardwork",
          "points": 0,
          "present": false
        },
        {
          "factor": "sexual_relations",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_recreation",
          "points": 0,
          "present": false
        },
        {
          "factor": "strenuous_sports",
          "points": 0,
          "present": false
        }
      ],
      "dasi": 0,
      "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": "dasi",
      "formula_expression": "DASI = 2.75*self_care + 1.75*walk_indoors + 2.75*walk_blocks + 5.50*climb_stairs + 8.00*run_short + 2.70*light_housework + 3.50*moderate_housework + 8.00*heavy_housework + 4.50*yardwork + 5.25*sexual_relations + 6.00*moderate_recreation + 7.50*strenuous_sports (Yes = weight, No = 0); VO2peak_mL/kg/min = 0.43*DASI + 9.6 (Hlatky 1989 Table I)",
      "max_score": 58.2,
      "score": 0,
      "vo2peak_ml_kg_min": 9.6
    }
  ],
  "path": "/api/calc/dasi"
}

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/dasi' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"climb_stairs":false,"heavy_housework":false,"light_housework":false,"moderate_housework":false,"moderate_recreation":false,"run_short":false,"self_care":false,"sexual_relations":false,"strenuous_sports":false,"walk_blocks":false,"walk_indoors":false,"yardwork":false},{"climb_stairs":false,"heavy_housework":false,"light_housework":false,"moderate_housework":false,"moderate_recreation":false,"run_short":false,"self_care":false,"sexual_relations":false,"strenuous_sports":false,"walk_blocks":false,"walk_indoors":false,"yardwork":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/dasi' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"climb_stairs":false,"heavy_housework":false,"light_housework":false,"moderate_housework":false,"moderate_recreation":false,"run_short":false,"self_care":false,"sexual_relations":false,"strenuous_sports":false,"walk_blocks":false,"walk_indoors":false,"yardwork":false},{"climb_stairs":false,"heavy_housework":false,"light_housework":false,"moderate_housework":false,"moderate_recreation":false,"run_short":false,"self_care":false,"sexual_relations":false,"strenuous_sports":false,"walk_blocks":false,"walk_indoors":false,"yardwork":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%2Fdasi&method=POST
const res = await pay("https://api.magentlab.com/api/calc/dasi", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "climb_stairs": false,
        "heavy_housework": false,
        "light_housework": false,
        "moderate_housework": false,
        "moderate_recreation": false,
        "run_short": false,
        "self_care": false,
        "sexual_relations": false,
        "strenuous_sports": false,
        "walk_blocks": false,
        "walk_indoors": false,
        "yardwork": false
      },
      {
        "climb_stairs": false,
        "heavy_housework": false,
        "light_housework": false,
        "moderate_housework": false,
        "moderate_recreation": false,
        "run_short": false,
        "self_care": false,
        "sexual_relations": false,
        "strenuous_sports": false,
        "walk_blocks": false,
        "walk_indoors": false,
        "yardwork": 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/dasi",
        json={
            "items": [
                {
                    "climb_stairs": False,
                    "heavy_housework": False,
                    "light_housework": False,
                    "moderate_housework": False,
                    "moderate_recreation": False,
                    "run_short": False,
                    "self_care": False,
                    "sexual_relations": False,
                    "strenuous_sports": False,
                    "walk_blocks": False,
                    "walk_indoors": False,
                    "yardwork": False,
                },
                {
                    "climb_stairs": False,
                    "heavy_housework": False,
                    "light_housework": False,
                    "moderate_housework": False,
                    "moderate_recreation": False,
                    "run_short": False,
                    "self_care": False,
                    "sexual_relations": False,
                    "strenuous_sports": False,
                    "walk_blocks": False,
                    "walk_indoors": False,
                    "yardwork": 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
2 h ago	Timed out	-	-	-
7 h ago	Timed out	-	-	-
12 h ago	Timed out	-	-	-
16 h ago	Passed	402	274 ms	$0.007
21 h ago	Passed	402	151 ms	$0.007

Show 10 older checks

26 h ago	Passed	402	316 ms	$0.007
31 h ago	Passed	402	157 ms	$0.007
35 h ago	Passed	402	288 ms	$0.007
40 h ago	Passed	402	234 ms	$0.007
44 h ago	Passed	402	529 ms	$0.007
2 days ago	Passed	402	342 ms	$0.007
2 days ago	Passed	402	229 ms	$0.007
2 days ago	Passed	402	234 ms	$0.007
3 days ago	Passed	402	139 ms	$0.007
3 days ago	Passed	402	334 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 67/ 100

Availability (30-day uptime)		27 / 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: 5 days ago

Source: x402 Bazaar settlement data.

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Trust score

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