71trust / 100

Calc Wells Dvt

by magent in Other

x402 APIPassing, checked 2 h ago

Wells deep-vein thrombosis probability from discrete clinical flags. Returns three-tier and two-tier bands. Deterministic published score with citation; not a diagnosis.

POST

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

Price: $0.007; per call in USDC
Uptime: 100%; last 30 days
Response time: 156 ms; 702 ms slowest 5%
Last check: Passed; 2 h ago, next any minute now

Run a free test call How 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/wells_dvt

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/wells_dvt
content-type: application/json

{
  "items": [
    {
      "active_cancer": true,
      "alternative_diagnosis_as_likely": false,
      "bedridden_or_surgery": false,
      "calf_swelling_gt_3cm": true,
      "collateral_veins": false,
      "entire_leg_swollen": false,
      "paralysis_or_cast": false,
      "pitting_edema": false,
      "previous_dvt": false,
      "tenderness": false
    },
    {
      "active_cancer": true,
      "alternative_diagnosis_as_likely": false,
      "bedridden_or_surgery": false,
      "calf_swelling_gt_3cm": true,
      "collateral_veins": false,
      "entire_leg_swollen": false,
      "paralysis_or_cast": false,
      "pitting_edema": false,
      "previous_dvt": false,
      "tenderness": 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, 142 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Wells PS, Anderson DR, Rodger M, et al.",
        "doi": "10.1056/NEJMoa023153",
        "id": "wells-dvt-2003",
        "source": "N Engl J Med. 2003;349(13):1227-1235",
        "title": "Evaluation of D-dimer in the diagnosis of suspected deep-vein thrombosis"
      },
      "components": [
        {
          "factor": "active_cancer",
          "points": 1,
          "present": true
        },
        {
          "factor": "paralysis_or_cast",
          "points": 0,
          "present": false
        },
        {
          "factor": "bedridden_or_surgery",
          "points": 0,
          "present": false
        },
        {
          "factor": "tenderness",
          "points": 0,
          "present": false
        },
        {
          "factor": "entire_leg_swollen",
          "points": 0,
          "present": false
        },
        {
          "factor": "calf_swelling_gt_3cm",
          "points": 1,
          "present": true
        },
        {
          "factor": "pitting_edema",
          "points": 0,
          "present": false
        },
        {
          "factor": "collateral_veins",
          "points": 0,
          "present": false
        },
        {
          "factor": "previous_dvt",
          "points": 0,
          "present": false
        },
        {
          "factor": "alternative_diagnosis_as_likely",
          "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": "wells_dvt",
      "formula_expression": "Wells DVT = +1 each of 9 findings; −2 if alternative_diagnosis_as_likely",
      "max_score": 9,
      "score": 2,
      "three_tier": "moderate",
      "two_tier": "likely"
    },
    {
      "citation": {
        "authors": "Wells PS, Anderson DR, Rodger M, et al.",
        "doi": "10.1056/NEJMoa023153",
        "id": "wells-dvt-2003",
        "source": "N Engl J Med. 2003;349(13):1227-1235",
        "title": "Evaluation of D-dimer in the diagnosis of suspected deep-vein thrombosis"
      },
      "components": [
        {
          "factor": "active_cancer",
          "points": 1,
          "present": true
        },
        {
          "factor": "paralysis_or_cast",
          "points": 0,
          "present": false
        },
        {
          "factor": "bedridden_or_surgery",
          "points": 0,
          "present": false
        },
        {
          "factor": "tenderness",
          "points": 0,
          "present": false
        },
        {
          "factor": "entire_leg_swollen",
          "points": 0,
          "present": false
        },
        {
          "factor": "calf_swelling_gt_3cm",
          "points": 1,
          "present": true
        },
        {
          "factor": "pitting_edema",
          "points": 0,
          "present": false
        },
        {
          "factor": "collateral_veins",
          "points": 0,
          "present": false
        },
        {
          "factor": "previous_dvt",
          "points": 0,
          "present": false
        },
        {
          "factor": "alternative_diagnosis_as_likely",
          "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": "wells_dvt",
      "formula_expression": "Wells DVT = +1 each of 9 findings; −2 if alternative_diagnosis_as_likely",
      "max_score": 9,
      "score": 2,
      "three_tier": "moderate",
      "two_tier": "likely"
    }
  ],
  "path": "/api/calc/wells_dvt"
}

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/wells_dvt' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"active_cancer":true,"alternative_diagnosis_as_likely":false,"bedridden_or_surgery":false,"calf_swelling_gt_3cm":true,"collateral_veins":false,"entire_leg_swollen":false,"paralysis_or_cast":false,"pitting_edema":false,"previous_dvt":false,"tenderness":false},{"active_cancer":true,"alternative_diagnosis_as_likely":false,"bedridden_or_surgery":false,"calf_swelling_gt_3cm":true,"collateral_veins":false,"entire_leg_swollen":false,"paralysis_or_cast":false,"pitting_edema":false,"previous_dvt":false,"tenderness":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/wells_dvt' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"active_cancer":true,"alternative_diagnosis_as_likely":false,"bedridden_or_surgery":false,"calf_swelling_gt_3cm":true,"collateral_veins":false,"entire_leg_swollen":false,"paralysis_or_cast":false,"pitting_edema":false,"previous_dvt":false,"tenderness":false},{"active_cancer":true,"alternative_diagnosis_as_likely":false,"bedridden_or_surgery":false,"calf_swelling_gt_3cm":true,"collateral_veins":false,"entire_leg_swollen":false,"paralysis_or_cast":false,"pitting_edema":false,"previous_dvt":false,"tenderness":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%2Fwells_dvt&method=POST
const res = await pay("https://api.magentlab.com/api/calc/wells_dvt", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "active_cancer": true,
        "alternative_diagnosis_as_likely": false,
        "bedridden_or_surgery": false,
        "calf_swelling_gt_3cm": true,
        "collateral_veins": false,
        "entire_leg_swollen": false,
        "paralysis_or_cast": false,
        "pitting_edema": false,
        "previous_dvt": false,
        "tenderness": false
      },
      {
        "active_cancer": true,
        "alternative_diagnosis_as_likely": false,
        "bedridden_or_surgery": false,
        "calf_swelling_gt_3cm": true,
        "collateral_veins": false,
        "entire_leg_swollen": false,
        "paralysis_or_cast": false,
        "pitting_edema": false,
        "previous_dvt": false,
        "tenderness": 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/wells_dvt",
        json={
            "items": [
                {
                    "active_cancer": True,
                    "alternative_diagnosis_as_likely": False,
                    "bedridden_or_surgery": False,
                    "calf_swelling_gt_3cm": True,
                    "collateral_veins": False,
                    "entire_leg_swollen": False,
                    "paralysis_or_cast": False,
                    "pitting_edema": False,
                    "previous_dvt": False,
                    "tenderness": False,
                },
                {
                    "active_cancer": True,
                    "alternative_diagnosis_as_likely": False,
                    "bedridden_or_surgery": False,
                    "calf_swelling_gt_3cm": True,
                    "collateral_veins": False,
                    "entire_leg_swollen": False,
                    "paralysis_or_cast": False,
                    "pitting_edema": False,
                    "previous_dvt": False,
                    "tenderness": 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	Passed	402	163 ms	$0.007
7 h ago	Passed	402	222 ms	$0.007
12 h ago	Passed	402	143 ms	$0.007
17 h ago	Passed	402	158 ms	$0.007
21 h ago	Passed	402	152 ms	$0.007

Show 10 older checks

26 h ago	Passed	402	159 ms	$0.007
30 h ago	Passed	402	139 ms	$0.007
34 h ago	Passed	402	134 ms	$0.007
38 h ago	Passed	402	156 ms	$0.007
43 h ago	Passed	402	143 ms	$0.007
47 h ago	Passed	402	599 ms	$0.007
2 days ago	Passed	402	304 ms	$0.007
2 days ago	Passed	402	1.7 s	$0.007
3 days ago	Passed	402	148 ms	$0.007
3 days ago	Passed	402	291 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 71/ 100

Availability (30-day uptime)		30 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		6 / 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: 3 in 30 days
Paid calls: 6 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-wells-dvt.svg)](https://toolvet.app/s/calc-wells-dvt)