ToolVet
71trust / 100

Calc Villalta

by magent in Other

x402 APIPassing, checked 26 min ago

Kahn 2009 Villalta scale (ISTH SSC): five caller-assigned symptoms and six signs, each 0-3 (none/mild/moderate/severe), summed 0-33. Venous ulcer is a separate boolean and is not added as 15 points. PTS if score ≥5 or ulcer; bands none 0-4 (no ulcer), mild 5-9, moderate 10-14, severe if ≥15 or ulcer. magent does not examine the limb. Not CEAP, not VCSS, not Ginsberg PTS.

POST
https://api.magentlab.com/api/calc/villalta
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
170 ms
796 ms slowest 5%
Last check
Passed
26 min ago, next in 4 min

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/villalta

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/villalta
content-type: application/json

{
  "items": [
    {
      "cramps": 0,
      "heaviness": 0,
      "hyperpigmentation": 0,
      "pain": 0,
      "pain_on_calf_compression": 0,
      "paresthesia": 0,
      "pretibial_edema": 0,
      "pruritus": 0,
      "redness": 0,
      "skin_induration": 0,
      "ulcer": false,
      "venous_ectasia": 0
    },
    {
      "cramps": 0,
      "heaviness": 0,
      "hyperpigmentation": 0,
      "pain": 0,
      "pain_on_calf_compression": 0,
      "paresthesia": 0,
      "pretibial_edema": 0,
      "pruritus": 0,
      "redness": 0,
      "skin_induration": 0,
      "ulcer": false,
      "venous_ectasia": 0
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 178 lines
{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Kahn SR",
        "doi": "10.1111/j.1538-7836.2009.03339.x",
        "id": "kahn-2009",
        "pmid": "19320818",
        "source": "J Thromb Haemost. 2009;7(5):884-888",
        "title": "Measurement properties of the Villalta scale to define and classify the severity of the post-thrombotic syndrome"
      },
      "components": [
        {
          "factor": "pain",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "cramps",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "heaviness",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "pruritus",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "paresthesia",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "pretibial_edema",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "skin_induration",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "hyperpigmentation",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "venous_ectasia",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "redness",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "pain_on_calf_compression",
          "points": 0,
          "present": true,
          "value": 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": "villalta",
      "formula_expression": "Villalta = pain + cramps + heaviness + pruritus + paresthesia + pretibial_edema + skin_induration + hyperpigmentation + venous_ectasia + redness + pain_on_calf_compression; each caller-assigned 0-3; max 33; ulcer is a separate boolean and is not added to the score; PTS if score ≥5 or ulcer; none 0-4 (no ulcer); mild 5-9; moderate 10-14; severe if score ≥15 or ulcer",
      "max_score": 33,
      "pts": false,
      "pts_band": "none",
      "score": 0,
      "ulcer": false
    },
    {
      "citation": {
        "authors": "Kahn SR",
        "doi": "10.1111/j.1538-7836.2009.03339.x",
        "id": "kahn-2009",
        "pmid": "19320818",
        "source": "J Thromb Haemost. 2009;7(5):884-888",
        "title": "Measurement properties of the Villalta scale to define and classify the severity of the post-thrombotic syndrome"
      },
      "components": [
        {
          "factor": "pain",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "cramps",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "heaviness",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "pruritus",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "paresthesia",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "pretibial_edema",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "skin_induration",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "hyperpigmentation",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "venous_ectasia",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "redness",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "pain_on_calf_compression",
          "points": 0,
          "present": true,
          "value": 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": "villalta",
      "formula_expression": "Villalta = pain + cramps + heaviness + pruritus + paresthesia + pretibial_edema + skin_induration + hyperpigmentation + venous_ectasia + redness + pain_on_calf_compression; each caller-assigned 0-3; max 33; ulcer is a separate boolean and is not added to the score; PTS if score ≥5 or ulcer; none 0-4 (no ulcer); mild 5-9; moderate 10-14; severe if score ≥15 or ulcer",
      "max_score": 33,
      "pts": false,
      "pts_band": "none",
      "score": 0,
      "ulcer": false
    }
  ],
  "path": "/api/calc/villalta"
}

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/villalta' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"cramps":0,"heaviness":0,"hyperpigmentation":0,"pain":0,"pain_on_calf_compression":0,"paresthesia":0,"pretibial_edema":0,"pruritus":0,"redness":0,"skin_induration":0,"ulcer":false,"venous_ectasia":0},{"cramps":0,"heaviness":0,"hyperpigmentation":0,"pain":0,"pain_on_calf_compression":0,"paresthesia":0,"pretibial_edema":0,"pruritus":0,"redness":0,"skin_induration":0,"ulcer":false,"venous_ectasia":0}]}'

# 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/villalta' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"cramps":0,"heaviness":0,"hyperpigmentation":0,"pain":0,"pain_on_calf_compression":0,"paresthesia":0,"pretibial_edema":0,"pruritus":0,"redness":0,"skin_induration":0,"ulcer":false,"venous_ectasia":0},{"cramps":0,"heaviness":0,"hyperpigmentation":0,"pain":0,"pain_on_calf_compression":0,"paresthesia":0,"pretibial_edema":0,"pruritus":0,"redness":0,"skin_induration":0,"ulcer":false,"venous_ectasia":0}]}' \
  | 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%2Fvillalta&method=POST
const res = await pay("https://api.magentlab.com/api/calc/villalta", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "cramps": 0,
        "heaviness": 0,
        "hyperpigmentation": 0,
        "pain": 0,
        "pain_on_calf_compression": 0,
        "paresthesia": 0,
        "pretibial_edema": 0,
        "pruritus": 0,
        "redness": 0,
        "skin_induration": 0,
        "ulcer": false,
        "venous_ectasia": 0
      },
      {
        "cramps": 0,
        "heaviness": 0,
        "hyperpigmentation": 0,
        "pain": 0,
        "pain_on_calf_compression": 0,
        "paresthesia": 0,
        "pretibial_edema": 0,
        "pruritus": 0,
        "redness": 0,
        "skin_induration": 0,
        "ulcer": false,
        "venous_ectasia": 0
      }
    ]
  }),
});
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/villalta",
        json={
            "items": [
                {
                    "cramps": 0,
                    "heaviness": 0,
                    "hyperpigmentation": 0,
                    "pain": 0,
                    "pain_on_calf_compression": 0,
                    "paresthesia": 0,
                    "pretibial_edema": 0,
                    "pruritus": 0,
                    "redness": 0,
                    "skin_induration": 0,
                    "ulcer": False,
                    "venous_ectasia": 0,
                },
                {
                    "cramps": 0,
                    "heaviness": 0,
                    "hyperpigmentation": 0,
                    "pain": 0,
                    "pain_on_calf_compression": 0,
                    "paresthesia": 0,
                    "pretibial_edema": 0,
                    "pruritus": 0,
                    "redness": 0,
                    "skin_induration": 0,
                    "ulcer": False,
                    "venous_ectasia": 0,
                },
            ],
        },
    )
    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
26 min agoPassed402285 ms$0.007
5 h agoPassed402184 ms$0.007
10 h agoPassed402157 ms$0.007
15 h agoPassed402143 ms$0.007
19 h agoPassed402158 ms$0.007
Show 10 older checks
24 h agoPassed402392 ms$0.007
28 h agoPassed402146 ms$0.007
32 h agoPassed402239 ms$0.007
36 h agoPassed402255 ms$0.007
41 h agoPassed402386 ms$0.007
45 h agoPassed402189 ms$0.007
2 days agoPassed402166 ms$0.007
2 days agoPassed402164 ms$0.007
2 days agoPassed402229 ms$0.007
3 days agoPassed402153 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007