Westley croup score (1978)

Westley croup

Sum the Westley 1978 croup clinical score from caller-assigned consciousness, cyanosis, stridor, air entry, and retractions (maximum 17).

LIVE $0.005 USDC GET /api/calc/westley_croup

Markdown: /docs/westley-croup.md · Canonical: https://magentlab.com/docs/westley-croup

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

What it computes

Sum the Westley 1978 croup clinical score from caller-assigned consciousness, cyanosis, stridor, air entry, and retractions (maximum 17).

When to use

When an agent needs the published Westley croup score and must not invent a severity band, steroid indication, or a different croup score.

When not to use

Not a diagnosis of croup and not a treatment or admission order. magent does not examine the child.
Each sign uses only the 1978 point values (consciousness 0 or 5; cyanosis 0, 4, or 5; stridor 0-2; air entry 0-2; retractions 0-3).
Westley 1978 does not publish mild/moderate/severe total-score cutoffs; magent does not invent them.

Formula

Westley = consciousness + cyanosis + stridor + air_entry + retractions; max 17

Citation

Title: Nebulized racemic epinephrine by IPPB for the treatment of croup: a double-blind study
Authors: Westley CR, Cotton EK, Brooks JG
Source: Am J Dis Child. 1978;132(5):484-487
DOI: 10.1001/archpedi.1978.02120300044006

Worked example

Stridor with agitation and mild retractions

Given: air_entry=0consciousness=0cyanosis=0retractions=1stridor=1

consciousness 0 + cyanosis 0 + stridor 1 + air_entry 0 + retractions 1
Score = 2

Maximum 17

Given: air_entry=2consciousness=5cyanosis=5retractions=3stridor=2

5+5+2+2+3 = 17

Also searched as

Westley croup score
Westley score
croup severity score
racemic epinephrine croup score
pediatric croup score
Westley 1978

Try

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

/api/calc/westley_croup?consciousness=0&cyanosis=0&stridor=1&air_entry=0&retractions=1

Full URL: https://api.magentlab.com/api/calc/westley_croup?consciousness=0&cyanosis=0&stridor=1&air_entry=0&retractions=1

Call

Expect HTTP 402 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/westley_croup?consciousness=0&cyanosis=0&stridor=1&air_entry=0&retractions=1"

Parameters

Name	Type	Required	Description
`consciousness`	integer	required	Westley 1978 level of consciousness: 0 normal, 5 disoriented. Caller-assigned.
`cyanosis`	integer	required	Cyanosis: 0 none, 4 with agitation, 5 at rest. Caller-assigned.
`stridor`	integer	required	Stridor: 0 none, 1 with agitation, 2 at rest. Caller-assigned.
`air_entry`	integer	required	Air entry: 0 normal, 1 decreased, 2 markedly decreased. Caller-assigned.
`retractions`	integer	required	Chest-wall retractions: 0 none, 1 mild, 2 moderate, 3 severe. Caller-assigned.

Bulk (POST)

POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement.

POST /api/calc/westley_croup Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 PREVIEW

1 to 25 items. Each item uses the same keys as the GET query parameters.
POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows.
The first invalid item fails the whole request (index in the 400 JSON). You are not charged.
HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row.
Catalog misses (empty matches, found=false) stay paid 200s inside that slot.
x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items.

Example request (fixture)

{
  "items": [
    {
      "air_entry": "0",
      "consciousness": "0",
      "cyanosis": "0",
      "retractions": "1",
      "stridor": "1"
    },
    {
      "air_entry": "0",
      "consciousness": "0",
      "cyanosis": "0",
      "retractions": "1",
      "stridor": "1"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "count": 2,
  "path": "/api/calc/westley_croup",
  "items": [
    {
      "components": [
        {
          "factor": "consciousness",
          "points": 0,
          "present": false
        },
        {
          "factor": "cyanosis",
          "points": 0,
          "present": false
        },
        {
          "factor": "stridor",
          "points": 1,
          "present": true
        },
        {
          "factor": "air_entry",
          "points": 0,
          "present": false
        },
        {
          "factor": "retractions",
          "points": 1,
          "present": true
        }
      ],
      "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.",
      "citation": {
        "authors": "Westley CR, Cotton EK, Brooks JG",
        "doi": "10.1001/archpedi.1978.02120300044006",
        "id": "westley-1978",
        "source": "Am J Dis Child. 1978;132(5):484-487",
        "title": "Nebulized racemic epinephrine by IPPB for the treatment of croup: a double-blind study"
      },
      "formula": "westley_croup",
      "formula_expression": "Westley = consciousness + cyanosis + stridor + air_entry + retractions; max 17",
      "max_score": 17,
      "score": 2,
      "air_entry": 0,
      "consciousness": 0,
      "cyanosis": 0,
      "retractions": 1,
      "stridor": 1
    },
    {
      "components": [
        {
          "factor": "consciousness",
          "points": 0,
          "present": false
        },
        {
          "factor": "cyanosis",
          "points": 0,
          "present": false
        },
        {
          "factor": "stridor",
          "points": 1,
          "present": true
        },
        {
          "factor": "air_entry",
          "points": 0,
          "present": false
        },
        {
          "factor": "retractions",
          "points": 1,
          "present": true
        }
      ],
      "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.",
      "citation": {
        "authors": "Westley CR, Cotton EK, Brooks JG",
        "doi": "10.1001/archpedi.1978.02120300044006",
        "id": "westley-1978",
        "source": "Am J Dis Child. 1978;132(5):484-487",
        "title": "Nebulized racemic epinephrine by IPPB for the treatment of croup: a double-blind study"
      },
      "formula": "westley_croup",
      "formula_expression": "Westley = consciousness + cyanosis + stridor + air_entry + retractions; max 17",
      "max_score": 17,
      "score": 2,
      "air_entry": 0,
      "consciousness": 0,
      "cyanosis": 0,
      "retractions": 1,
      "stridor": 1
    }
  ]
}

Response

Field	Type	Description
`formula`	string	westley_croup
`formula_expression`	string	Westley 1978 sum
`score`	integer	Total 0-17
`max_score`	integer	17
`consciousness`	integer	0 or 5
`cyanosis`	integer	0, 4, or 5
`stridor`	integer	0-2
`air_entry`	integer	0-2
`retractions`	integer	0-3
`components`	array	Per-sign points
`citation`	object	Westley 1978
`disclaimer`	string	Not a medical device

Example JSON

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

{
  "components": [
    {
      "factor": "consciousness",
      "points": 0,
      "present": false
    },
    {
      "factor": "cyanosis",
      "points": 0,
      "present": false
    },
    {
      "factor": "stridor",
      "points": 1,
      "present": true
    },
    {
      "factor": "air_entry",
      "points": 0,
      "present": false
    },
    {
      "factor": "retractions",
      "points": 1,
      "present": true
    }
  ],
  "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.",
  "citation": {
    "authors": "Westley CR, Cotton EK, Brooks JG",
    "doi": "10.1001/archpedi.1978.02120300044006",
    "id": "westley-1978",
    "source": "Am J Dis Child. 1978;132(5):484-487",
    "title": "Nebulized racemic epinephrine by IPPB for the treatment of croup: a double-blind study"
  },
  "formula": "westley_croup",
  "formula_expression": "Westley = consciousness + cyanosis + stridor + air_entry + retractions; max 17",
  "max_score": 17,
  "score": 2,
  "air_entry": 0,
  "consciousness": 0,
  "cyanosis": 0,
  "retractions": 1,
  "stridor": 1
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

HTTP	Code	When
400	`invalid_westley_consciousness`	consciousness must be 0 (normal) or 5 (disoriented). Returned before settlement; you are not charged.
400	`invalid_westley_cyanosis`	cyanosis must be 0 (none), 4 (with agitation), or 5 (at rest). Returned before settlement; you are not charged.
400	`invalid_westley_stridor`	stridor must be 0 (none), 1 (with agitation), or 2 (at rest). Returned before settlement; you are not charged.
400	`invalid_westley_air_entry`	air_entry must be 0 (normal), 1 (decreased), or 2 (markedly decreased). Returned before settlement; you are not charged.
400	`invalid_westley_retractions`	retractions must be 0 (none), 1 (mild), 2 (moderate), or 3 (severe). Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

Pediatric ETT size — Compute Cole 1957 uncuffed pediatric endotracheal tube internal diameter from age in years.
Apgar score — Compute the Apgar newborn evaluation score as the sum of five caller-assigned 0-2 signs.

Payment

Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, 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. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /docs/mcp.

Guarantees

HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged.
exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE.
HTTP 402 is unpaid only. Do not sign a second authorization because of a 503.
Execution is timeout-bounded and concurrency-capped.
Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.