LIVE

Wells DVT

Compute the Wells deep-vein thrombosis probability score and return three-tier and two-tier bands.

LIVE $0.005 USDC GET /api/calc/wells_dvt

Markdown: /docs/wells-dvt.md · Canonical: https://magentlab.com/docs/wells-dvt

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

Compute the Wells deep-vein thrombosis probability score and return three-tier and two-tier bands.

When to use

When an agent needs the published Wells DVT arithmetic and must not invent a probability from prose.

When not to use

• Not a diagnosis. Bands are published cut-points, not a DVT rule-out.
• alternative_diagnosis_as_likely subtracts 2. Flags are caller-supplied booleans.

Formula

Wells DVT = +1 each of 9 findings; −2 if alternative_diagnosis_as_likely

Citation

Title

Evaluation of D-dimer in the diagnosis of suspected deep-vein thrombosis

Authors

Wells PS, Anderson DR, Rodger M, et al.

Source

N Engl J Med. 2003;349(13):1227-1235

DOI

10.1056/NEJMoa023153

Worked example

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/wells_dvt?active_cancer=true&paralysis_or_cast=false&bedridden_or_surgery=false&tenderness=false&entire_leg_swollen=false&calf_swelling_gt_3cm=true&pitting_edema=false&collateral_veins=false&previous_dvt=false&alternative_diagnosis_as_likely=false

Full URL: https://api.magentlab.com/api/calc/wells_dvt?active_cancer=true&paralysis_or_cast=false&bedridden_or_surgery=false&tenderness=false&entire_leg_swollen=false&calf_swelling_gt_3cm=true&pitting_edema=false&collateral_veins=false&previous_dvt=false&alternative_diagnosis_as_likely=false

x402 V2 curl

Expect HTTP 402 and a PAYMENT-REQUIRED header until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/wells_dvt?active_cancer=true&paralysis_or_cast=false&bedridden_or_surgery=false&tenderness=false&entire_leg_swollen=false&calf_swelling_gt_3cm=true&pitting_edema=false&collateral_veins=false&previous_dvt=false&alternative_diagnosis_as_likely=false"

Cursor mcp.json

Intended config for @magent/mcp. This is not npm @x402/fetch (a payment fetch wrapper).

{
  "mcpServers": {
    "magent": {
      "args": [
        "-y",
        "@magent/mcp"
      ],
      "command": "npx",
      "env": {
        "X402_PRIVATE_KEY": "0xYOUR_SPENDING_KEY"
      }
    }
  }
}

Parameters

Response

Example JSON

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "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 coded-ontology output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
  "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"
  },
  "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"
}

Errors

Related tools

• Wells PE — Compute the Wells pulmonary-embolism probability score and return three-tier and two-tier bands.
• CURB-65 — Compute the CURB-65 community-acquired pneumonia severity score from age and discrete flags.

Also searched as

• Wells DVT score
• Wells deep vein thrombosis
• DVT likely unlikely
• Wells DVT two-tier

Payment

Required query parameters must be present and valid. Invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. Retry the same URL with PAYMENT-SIGNATURE. Settlement completes before the tool runs. Full handshake and shared payment errors: Payments.

Guarantees

• Invalid query parameters return HTTP 400 before settlement. You are not charged.
• Settlement finishes before the tool executes. Uncertain settlement fails closed (HTTP 503).
• Execution is timeout-bounded and concurrency-capped.
• Calculator inputs are not persisted. Request logs store path without query.