Infection / VTE · LIVE

SMART-COP pneumonia IRVS

SMART-COP

Compute the Charles 2008 SMART-COP point total and IRVS risk band for community-acquired pneumonia.

LIVE $0.005 USDC GET /api/calc/smart_cop

Markdown: /docs/smart-cop.md · Canonical: https://magentlab.com/docs/smart-cop

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

What it computes

Compute the Charles 2008 SMART-COP point total and IRVS risk band for community-acquired pneumonia.

When to use

When an agent needs the published Charles 2008 SMART-COP total and IRVS band and must not invent a site-of-care or ICU-admission decision.

When not to use

• Not a medical device and not a site-of-care, admission, ICU, or treatment protocol.
• Charles 2008 SMART-COP only. Not CURB-65, CRB-65, or PSI/PORT. Those are separate tools.
• Respiratory rate and oxygenation cutoffs are age-adjusted at 50 years (≤50 vs >50) as published.
• Provide exactly one of pao2_mm_hg, spo2_percent, or pf_ratio. magent does not combine them.
• Albumin is g/dL or g/L, not mixed. arterial_ph is optional; omitted pH scores 0 (Charles 2008 missing-pH assumption).
• magent does not interpret chest radiographs or assess confusion. multilobar_cxr and confusion are caller-assigned flags.

Formula

SMART-COP (Charles 2008) = SBP<90 (2) + multilobar_cxr (1) + albumin<3.5 g/dL (1) + age-adjusted RR (1; age<=50 RR>=25, age>50 RR>=30) + HR>=125 (1) + confusion (1) + age-adjusted low oxygen (2; age<=50 PaO2<70 or SpO2<=93 or P/F<333; age>50 PaO2<60 or SpO2<=90 or P/F<250) + arterial_pH<7.35 (2; omitted pH scores 0); max 11; IRVS 0-2 low, 3-4 moderate, 5-6 high, >=7 very high

Citation

Title

SMART-COP: a tool for predicting the need for intensive respiratory or vasopressor support in community-acquired pneumonia

Authors

Charles PGP, Wolfe R, Whitby M, et al.

Source

Clin Infect Dis. 2008;47(3):375-384

DOI

10.1086/589754

Worked example

Also searched as

• SMART-COP
• SMARTCOP
• Charles SMART-COP
• IRVS pneumonia
• community-acquired pneumonia SMART-COP
• SMART COP score

Try

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

/api/calc/smart_cop?age=40&systolic_mm_hg=120&multilobar_cxr=false&albumin_g_dl=4.0&respiratory_rate=16&heart_rate_bpm=80&confusion=false&spo2_percent=98&arterial_ph=7.40

Full URL: https://api.magentlab.com/api/calc/smart_cop?age=40&systolic_mm_hg=120&multilobar_cxr=false&albumin_g_dl=4.0&respiratory_rate=16&heart_rate_bpm=80&confusion=false&spo2_percent=98&arterial_ph=7.40

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/smart_cop?age=40&systolic_mm_hg=120&multilobar_cxr=false&albumin_g_dl=4.0&respiratory_rate=16&heart_rate_bpm=80&confusion=false&spo2_percent=98&arterial_ph=7.40"

Parameters

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/smart_cop 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": "40",
      "albumin_g_dl": "4.0",
      "arterial_ph": "7.40",
      "confusion": "false",
      "heart_rate_bpm": "80",
      "multilobar_cxr": "false",
      "respiratory_rate": "16",
      "spo2_percent": "98",
      "systolic_mm_hg": "120"
    },
    {
      "age": "40",
      "albumin_g_dl": "4.0",
      "arterial_ph": "7.40",
      "confusion": "false",
      "heart_rate_bpm": "80",
      "multilobar_cxr": "false",
      "respiratory_rate": "16",
      "spo2_percent": "98",
      "systolic_mm_hg": "120"
    }
  ]
}

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/smart_cop",
  "items": [
    {
      "components": [
        {
          "value": 120.0,
          "factor": "systolic_lt_90",
          "points": 0,
          "present": false
        },
        {
          "factor": "multilobar_cxr",
          "points": 0,
          "present": false
        },
        {
          "value": 4.0,
          "factor": "albumin_lt_3_5",
          "points": 0,
          "present": false
        },
        {
          "value": 16,
          "factor": "respiratory_rate",
          "points": 0,
          "present": false
        },
        {
          "value": 80,
          "factor": "heart_rate_ge_125",
          "points": 0,
          "present": false
        },
        {
          "factor": "confusion",
          "points": 0,
          "present": false
        },
        {
          "input": "spo2_percent",
          "value": 98.0,
          "factor": "oxygen_low",
          "points": 0,
          "present": false
        },
        {
          "value": 7.4,
          "factor": "arterial_ph_lt_7_35",
          "points": 0,
          "present": false
        }
      ],
      "albumin_g_dl": 4.0,
      "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.",
      "age_years": 40,
      "citation": {
        "authors": "Charles PGP, Wolfe R, Whitby M, et al.",
        "doi": "10.1086/589754",
        "id": "charles-2008",
        "pmid": "18558884",
        "source": "Clin Infect Dis. 2008;47(3):375-384",
        "title": "SMART-COP: a tool for predicting the need for intensive respiratory or vasopressor support in community-acquired pneumonia"
      },
      "formula": "smart_cop",
      "formula_expression": "SMART-COP (Charles 2008) = SBP<90 (2) + multilobar_cxr (1) + albumin<3.5 g/dL (1) + age-adjusted RR (1; age<=50 RR>=25, age>50 RR>=30) + HR>=125 (1) + confusion (1) + age-adjusted low oxygen (2; age<=50 PaO2<70 or SpO2<=93 or P/F<333; age>50 PaO2<60 or SpO2<=90 or P/F<250) + arterial_pH<7.35 (2; omitted pH scores 0); max 11; IRVS 0-2 low, 3-4 moderate, 5-6 high, >=7 very high",
      "max_score": 11,
      "score": 0,
      "systolic_mm_hg": 120.0,
      "heart_rate_bpm": 80,
      "arterial_ph": 7.4,
      "respiratory_rate": 16,
      "spo2_percent": 98.0,
      "irvs_risk": "low"
    },
    {
      "components": [
        {
          "value": 120.0,
          "factor": "systolic_lt_90",
          "points": 0,
          "present": false
        },
        {
          "factor": "multilobar_cxr",
          "points": 0,
          "present": false
        },
        {
          "value": 4.0,
          "factor": "albumin_lt_3_5",
          "points": 0,
          "present": false
        },
        {
          "value": 16,
          "factor": "respiratory_rate",
          "points": 0,
          "present": false
        },
        {
          "value": 80,
          "factor": "heart_rate_ge_125",
          "points": 0,
          "present": false
        },
        {
          "factor": "confusion",
          "points": 0,
          "present": false
        },
        {
          "input": "spo2_percent",
          "value": 98.0,
          "factor": "oxygen_low",
          "points": 0,
          "present": false
        },
        {
          "value": 7.4,
          "factor": "arterial_ph_lt_7_35",
          "points": 0,
          "present": false
        }
      ],
      "albumin_g_dl": 4.0,
      "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.",
      "age_years": 40,
      "citation": {
        "authors": "Charles PGP, Wolfe R, Whitby M, et al.",
        "doi": "10.1086/589754",
        "id": "charles-2008",
        "pmid": "18558884",
        "source": "Clin Infect Dis. 2008;47(3):375-384",
        "title": "SMART-COP: a tool for predicting the need for intensive respiratory or vasopressor support in community-acquired pneumonia"
      },
      "formula": "smart_cop",
      "formula_expression": "SMART-COP (Charles 2008) = SBP<90 (2) + multilobar_cxr (1) + albumin<3.5 g/dL (1) + age-adjusted RR (1; age<=50 RR>=25, age>50 RR>=30) + HR>=125 (1) + confusion (1) + age-adjusted low oxygen (2; age<=50 PaO2<70 or SpO2<=93 or P/F<333; age>50 PaO2<60 or SpO2<=90 or P/F<250) + arterial_pH<7.35 (2; omitted pH scores 0); max 11; IRVS 0-2 low, 3-4 moderate, 5-6 high, >=7 very high",
      "max_score": 11,
      "score": 0,
      "systolic_mm_hg": 120.0,
      "heart_rate_bpm": 80,
      "arterial_ph": 7.4,
      "respiratory_rate": 16,
      "spo2_percent": 98.0,
      "irvs_risk": "low"
    }
  ]
}

Response

Example JSON

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

{
  "components": [
    {
      "value": 120.0,
      "factor": "systolic_lt_90",
      "points": 0,
      "present": false
    },
    {
      "factor": "multilobar_cxr",
      "points": 0,
      "present": false
    },
    {
      "value": 4.0,
      "factor": "albumin_lt_3_5",
      "points": 0,
      "present": false
    },
    {
      "value": 16,
      "factor": "respiratory_rate",
      "points": 0,
      "present": false
    },
    {
      "value": 80,
      "factor": "heart_rate_ge_125",
      "points": 0,
      "present": false
    },
    {
      "factor": "confusion",
      "points": 0,
      "present": false
    },
    {
      "input": "spo2_percent",
      "value": 98.0,
      "factor": "oxygen_low",
      "points": 0,
      "present": false
    },
    {
      "value": 7.4,
      "factor": "arterial_ph_lt_7_35",
      "points": 0,
      "present": false
    }
  ],
  "albumin_g_dl": 4.0,
  "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.",
  "age_years": 40,
  "citation": {
    "authors": "Charles PGP, Wolfe R, Whitby M, et al.",
    "doi": "10.1086/589754",
    "id": "charles-2008",
    "pmid": "18558884",
    "source": "Clin Infect Dis. 2008;47(3):375-384",
    "title": "SMART-COP: a tool for predicting the need for intensive respiratory or vasopressor support in community-acquired pneumonia"
  },
  "formula": "smart_cop",
  "formula_expression": "SMART-COP (Charles 2008) = SBP<90 (2) + multilobar_cxr (1) + albumin<3.5 g/dL (1) + age-adjusted RR (1; age<=50 RR>=25, age>50 RR>=30) + HR>=125 (1) + confusion (1) + age-adjusted low oxygen (2; age<=50 PaO2<70 or SpO2<=93 or P/F<333; age>50 PaO2<60 or SpO2<=90 or P/F<250) + arterial_pH<7.35 (2; omitted pH scores 0); max 11; IRVS 0-2 low, 3-4 moderate, 5-6 high, >=7 very high",
  "max_score": 11,
  "score": 0,
  "systolic_mm_hg": 120.0,
  "heart_rate_bpm": 80,
  "arterial_ph": 7.4,
  "respiratory_rate": 16,
  "spo2_percent": 98.0,
  "irvs_risk": "low"
}

Client errors (HTTP 400)

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

Related tools

• PSI / PORT — Compute the Fine 1997 Pneumonia Severity Index (PORT) two-step risk class and Table 2 point total for community-acquired pneumonia.
• CURB-65 — Compute the CURB-65 community-acquired pneumonia severity score from age and discrete flags.
• CRB-65 — Compute the Lim 2003 CRB-65 community-acquired pneumonia score from age and caller-assigned confusion, respiratory-rate, and blood-pressure flags. Urea is not an input.

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.