SCAP (España 2006)

SCAP

Apply the España 2006 SCAP major/minor rule from eight caller-assigned flags and return major_count, minor_count, score, and whether the published severe threshold is met.

LIVE $0.005 USDC GET /api/calc/scap

Markdown: /docs/scap.md · Canonical: https://magentlab.com/docs/scap

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

What it computes

Apply the España 2006 SCAP major/minor rule from eight caller-assigned flags and return major_count, minor_count, score, and whether the published severe threshold is met.

When to use

When an agent already has the published España 2006 predictors assigned as flags and needs the 1-major or ≥2-minor severe rule. magent does not measure pH, blood pressure, respiratory rate, BUN, or PaO2, and does not read radiographs.

When not to use

Not a medical device and not a diagnosis of pneumonia.
Not an ICU-admission, site-of-care, or treatment order.
España 2006 major/minor rule only. Not CURB-65, not PSI/PORT, and not SMART-COP.
The caller assigns every flag. magent does not measure pH, blood pressure, respiratory rate, BUN, or PaO2, and does not interpret radiographs.
hypoxemia is caller-assigned as PaO2 <54 mm Hg or PaO2/FiO2 <250. magent does not combine those measurements.
Each true predictor scores 1 (max 8). This is the published 1-major or ≥2-minor rule, not secondary 13/11/9/6/5 integer cards or 0–9 / 10–19 / ≥20 classes.

Formula

SCAP severe iff 1 major (ph_lt_7_30 or sbp_lt_90) OR >=2 minor (respiratory_rate_gt_30, altered_mental_status, bun_gt_30_mg_dl, hypoxemia, age_ge_80, multilobar_or_bilateral); 1 point per true predictor (España 2006 major/minor rule; not beta-derived integer cards); max 8

Citation

Title: Development and validation of a clinical prediction rule for severe community-acquired pneumonia
Authors: España PP, Capelastegui A, Gorordo I, Esteban C, Oribe M, Ortega M, Bilbao A, Quintana JM
Source: Am J Respir Crit Care Med. 2006;174(11):1249-1256
DOI: 10.1164/rccm.200602-177OC

Worked example

All eight flags absent

Given: age_ge_80=falsealtered_mental_status=falsebun_gt_30_mg_dl=falsehypoxemia=falsemultilobar_or_bilateral=falseph_lt_7_30=falserespiratory_rate_gt_30=falsesbp_lt_90=false

Both major flags are false → major_count = 0
All six minor flags are false → minor_count = 0
score = 0; scap_severe is false (needs 1 major or ≥2 minor)

Also searched as

SCAP
España 2006 SCAP
severe community-acquired pneumonia
SCAP rule
CURXO80
España severe CAP
SCAP major minor criteria

Try

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

/api/calc/scap?ph_lt_7_30=false&sbp_lt_90=false&respiratory_rate_gt_30=false&altered_mental_status=false&bun_gt_30_mg_dl=false&hypoxemia=false&age_ge_80=false&multilobar_or_bilateral=false

Full URL: https://api.magentlab.com/api/calc/scap?ph_lt_7_30=false&sbp_lt_90=false&respiratory_rate_gt_30=false&altered_mental_status=false&bun_gt_30_mg_dl=false&hypoxemia=false&age_ge_80=false&multilobar_or_bilateral=false

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/scap?ph_lt_7_30=false&sbp_lt_90=false&respiratory_rate_gt_30=false&altered_mental_status=false&bun_gt_30_mg_dl=false&hypoxemia=false&age_ge_80=false&multilobar_or_bilateral=false"

Parameters

Name	Type	Required	Description
`ph_lt_7_30`	boolean	required	Arterial pH <7.30 (España 2006 major). true or false as assigned by the caller. magent does not measure pH.
`sbp_lt_90`	boolean	required	Systolic blood pressure <90 mm Hg (España 2006 major). true or false as assigned by the caller. magent does not measure blood pressure.
`respiratory_rate_gt_30`	boolean	required	Respiratory rate >30 breaths/min (España 2006 minor; strict greater-than, not ≥30). true or false as assigned by the caller. magent does not measure respiratory rate.
`altered_mental_status`	boolean	required	Altered mental status (España 2006 minor). true or false as assigned by the caller. magent does not assess mental status.
`bun_gt_30_mg_dl`	boolean	required	Blood urea nitrogen >30 mg/dL (España 2006 minor). true or false as assigned by the caller. magent does not convert urea or measure BUN.
`hypoxemia`	boolean	required	Hypoxemia as PaO2 <54 mm Hg or PaO2/FiO2 <250 (España 2006 minor), as assigned by the caller. true or false. magent does not measure PaO2 or FiO2.
`age_ge_80`	boolean	required	Age ≥80 years (España 2006 minor). true or false as assigned by the caller. magent does not compute age.
`multilobar_or_bilateral`	boolean	required	Multilobar or bilateral lung involvement (España 2006 minor). true or false as assigned by the caller. magent does not interpret radiographs.

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/scap 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": [
    {
      "age_ge_80": "false",
      "altered_mental_status": "false",
      "bun_gt_30_mg_dl": "false",
      "hypoxemia": "false",
      "multilobar_or_bilateral": "false",
      "ph_lt_7_30": "false",
      "respiratory_rate_gt_30": "false",
      "sbp_lt_90": "false"
    },
    {
      "age_ge_80": "false",
      "altered_mental_status": "false",
      "bun_gt_30_mg_dl": "false",
      "hypoxemia": "false",
      "multilobar_or_bilateral": "false",
      "ph_lt_7_30": "false",
      "respiratory_rate_gt_30": "false",
      "sbp_lt_90": "false"
    }
  ]
}

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/scap",
  "items": [
    {
      "components": [
        {
          "factor": "ph_lt_7_30",
          "points": 0,
          "present": false
        },
        {
          "factor": "sbp_lt_90",
          "points": 0,
          "present": false
        },
        {
          "factor": "respiratory_rate_gt_30",
          "points": 0,
          "present": false
        },
        {
          "factor": "altered_mental_status",
          "points": 0,
          "present": false
        },
        {
          "factor": "bun_gt_30_mg_dl",
          "points": 0,
          "present": false
        },
        {
          "factor": "hypoxemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "age_ge_80",
          "points": 0,
          "present": false
        },
        {
          "factor": "multilobar_or_bilateral",
          "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.",
      "citation": {
        "authors": "España PP, Capelastegui A, Gorordo I, Esteban C, Oribe M, Ortega M, Bilbao A, Quintana JM",
        "doi": "10.1164/rccm.200602-177OC",
        "id": "espana-2006",
        "pmid": "16973986",
        "source": "Am J Respir Crit Care Med. 2006;174(11):1249-1256",
        "title": "Development and validation of a clinical prediction rule for severe community-acquired pneumonia"
      },
      "formula": "scap",
      "formula_expression": "SCAP severe iff 1 major (ph_lt_7_30 or sbp_lt_90) OR >=2 minor (respiratory_rate_gt_30, altered_mental_status, bun_gt_30_mg_dl, hypoxemia, age_ge_80, multilobar_or_bilateral); 1 point per true predictor (España 2006 major/minor rule; not beta-derived integer cards); max 8",
      "max_score": 8,
      "score": 0,
      "major_count": 0,
      "minor_count": 0,
      "scap_severe": false
    },
    {
      "components": [
        {
          "factor": "ph_lt_7_30",
          "points": 0,
          "present": false
        },
        {
          "factor": "sbp_lt_90",
          "points": 0,
          "present": false
        },
        {
          "factor": "respiratory_rate_gt_30",
          "points": 0,
          "present": false
        },
        {
          "factor": "altered_mental_status",
          "points": 0,
          "present": false
        },
        {
          "factor": "bun_gt_30_mg_dl",
          "points": 0,
          "present": false
        },
        {
          "factor": "hypoxemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "age_ge_80",
          "points": 0,
          "present": false
        },
        {
          "factor": "multilobar_or_bilateral",
          "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.",
      "citation": {
        "authors": "España PP, Capelastegui A, Gorordo I, Esteban C, Oribe M, Ortega M, Bilbao A, Quintana JM",
        "doi": "10.1164/rccm.200602-177OC",
        "id": "espana-2006",
        "pmid": "16973986",
        "source": "Am J Respir Crit Care Med. 2006;174(11):1249-1256",
        "title": "Development and validation of a clinical prediction rule for severe community-acquired pneumonia"
      },
      "formula": "scap",
      "formula_expression": "SCAP severe iff 1 major (ph_lt_7_30 or sbp_lt_90) OR >=2 minor (respiratory_rate_gt_30, altered_mental_status, bun_gt_30_mg_dl, hypoxemia, age_ge_80, multilobar_or_bilateral); 1 point per true predictor (España 2006 major/minor rule; not beta-derived integer cards); max 8",
      "max_score": 8,
      "score": 0,
      "major_count": 0,
      "minor_count": 0,
      "scap_severe": false
    }
  ]
}

Response

Field	Type	Description
`formula`	string	scap
`formula_expression`	string	España 2006 1-major or ≥2-minor rule with 1 point per true predictor
`score`	integer	Count of true predictors (0-8). Not a 13/11/9/6/5 weighted card.
`max_score`	integer	Always 8
`major_count`	integer	Count of true major flags: ph_lt_7_30 and sbp_lt_90 (0-2)
`minor_count`	integer	Count of true minor flags: respiratory_rate_gt_30, altered_mental_status, bun_gt_30_mg_dl, hypoxemia, age_ge_80, multilobar_or_bilateral (0-6)
`scap_severe`	boolean	true when major_count ≥1 or minor_count ≥2 (España 2006). Not a pneumonia diagnosis and not an ICU-admission order.
`components`	array	Per-predictor points (1 if true, else 0)
`citation`	object	España 2006 AJRCCM citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "factor": "ph_lt_7_30",
      "points": 0,
      "present": false
    },
    {
      "factor": "sbp_lt_90",
      "points": 0,
      "present": false
    },
    {
      "factor": "respiratory_rate_gt_30",
      "points": 0,
      "present": false
    },
    {
      "factor": "altered_mental_status",
      "points": 0,
      "present": false
    },
    {
      "factor": "bun_gt_30_mg_dl",
      "points": 0,
      "present": false
    },
    {
      "factor": "hypoxemia",
      "points": 0,
      "present": false
    },
    {
      "factor": "age_ge_80",
      "points": 0,
      "present": false
    },
    {
      "factor": "multilobar_or_bilateral",
      "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.",
  "citation": {
    "authors": "España PP, Capelastegui A, Gorordo I, Esteban C, Oribe M, Ortega M, Bilbao A, Quintana JM",
    "doi": "10.1164/rccm.200602-177OC",
    "id": "espana-2006",
    "pmid": "16973986",
    "source": "Am J Respir Crit Care Med. 2006;174(11):1249-1256",
    "title": "Development and validation of a clinical prediction rule for severe community-acquired pneumonia"
  },
  "formula": "scap",
  "formula_expression": "SCAP severe iff 1 major (ph_lt_7_30 or sbp_lt_90) OR >=2 minor (respiratory_rate_gt_30, altered_mental_status, bun_gt_30_mg_dl, hypoxemia, age_ge_80, multilobar_or_bilateral); 1 point per true predictor (España 2006 major/minor rule; not beta-derived integer cards); max 8",
  "max_score": 8,
  "score": 0,
  "major_count": 0,
  "minor_count": 0,
  "scap_severe": false
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_flag`	boolean clinical flags must be true or false 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

CURB-65 — Compute the CURB-65 community-acquired pneumonia severity score from age and discrete flags.
PSI / PORT — Compute the Fine 1997 Pneumonia Severity Index (PORT) two-step risk class and Table 2 point total for community-acquired pneumonia.

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. HTTP 402 never includes the tool JSON.
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.