Emergency · LIVE

Modified Early Warning Score (Subbe)

MEWS

Compute the Subbe 2001 modified Early Warning Score from systolic BP, heart rate, respiratory rate, temperature, and caller-assigned AVPU.

LIVE $0.005 USDC GET /api/calc/mews

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

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

What it computes

Compute the Subbe 2001 modified Early Warning Score from systolic BP, heart rate, respiratory rate, temperature, and caller-assigned AVPU.

When to use

When an agent needs the published Subbe 2001 MEWS total and must not substitute NEWS2 or treat the score as an ICU-admission order.

When not to use

• Not a medical device and not an ICU-admission, HDU, or monitoring order. magent does not examine the patient.
• This is Subbe 2001 modified Early Warning Score (Table 1) only. It is not NEWS, NEWS2, or other later early-warning modifications.
• AVPU is caller-assigned (alert, voice, pain, or unresponsive). magent does not compute GCS here.
• Temperature is in °C as published. magent does not convert Fahrenheit.
• score_ge_5 follows the paper's association of scores of 5 or more with increased risk of death, ICU, or HDU. It is not a NEWS2 band.

Formula

MEWS = sbp_points + hr_points + rr_points + temp_points + avpu_points; Subbe 2001 Table 1; max 14

Citation

Title

Validation of a modified Early Warning Score in medical admissions

Authors

Subbe CP, Kruger M, Rutherford P, Gemmel L

Source

QJM. 2001;94(10):521-526

DOI

10.1093/qjmed/94.10.521

Worked example

Also searched as

• modified early warning score
• MEWS
• Subbe MEWS
• early warning score
• AVPU MEWS
• modified EWS

Try

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

/api/calc/mews?systolic_mm_hg=120&heart_rate_bpm=80&respiratory_rate=12&temperature_c=37.0&avpu=alert

Full URL: https://api.magentlab.com/api/calc/mews?systolic_mm_hg=120&heart_rate_bpm=80&respiratory_rate=12&temperature_c=37.0&avpu=alert

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/mews?systolic_mm_hg=120&heart_rate_bpm=80&respiratory_rate=12&temperature_c=37.0&avpu=alert"

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/mews 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": [
    {
      "avpu": "alert",
      "heart_rate_bpm": "80",
      "respiratory_rate": "12",
      "systolic_mm_hg": "120",
      "temperature_c": "37.0"
    },
    {
      "avpu": "alert",
      "heart_rate_bpm": "80",
      "respiratory_rate": "12",
      "systolic_mm_hg": "120",
      "temperature_c": "37.0"
    }
  ]
}

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/mews",
  "items": [
    {
      "components": [
        {
          "value": 120,
          "factor": "systolic_mm_hg",
          "points": 0,
          "present": false
        },
        {
          "value": 80,
          "factor": "heart_rate_bpm",
          "points": 0,
          "present": false
        },
        {
          "value": 12,
          "factor": "respiratory_rate",
          "points": 0,
          "present": false
        },
        {
          "value": 37.0,
          "factor": "temperature_c",
          "points": 0,
          "present": false
        },
        {
          "value": "alert",
          "factor": "avpu",
          "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": "Subbe CP, Kruger M, Rutherford P, Gemmel L",
        "doi": "10.1093/qjmed/94.10.521",
        "id": "subbe-2001",
        "pmid": "11588210",
        "source": "QJM. 2001;94(10):521-526",
        "title": "Validation of a modified Early Warning Score in medical admissions"
      },
      "formula": "mews",
      "formula_expression": "MEWS = sbp_points + hr_points + rr_points + temp_points + avpu_points; Subbe 2001 Table 1; max 14",
      "systolic_mm_hg": 120,
      "max_score": 14,
      "score": 0,
      "temperature_c": 37.0,
      "heart_rate_bpm": 80,
      "avpu": "alert",
      "respiratory_rate": 12,
      "score_ge_5": false
    },
    {
      "components": [
        {
          "value": 120,
          "factor": "systolic_mm_hg",
          "points": 0,
          "present": false
        },
        {
          "value": 80,
          "factor": "heart_rate_bpm",
          "points": 0,
          "present": false
        },
        {
          "value": 12,
          "factor": "respiratory_rate",
          "points": 0,
          "present": false
        },
        {
          "value": 37.0,
          "factor": "temperature_c",
          "points": 0,
          "present": false
        },
        {
          "value": "alert",
          "factor": "avpu",
          "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": "Subbe CP, Kruger M, Rutherford P, Gemmel L",
        "doi": "10.1093/qjmed/94.10.521",
        "id": "subbe-2001",
        "pmid": "11588210",
        "source": "QJM. 2001;94(10):521-526",
        "title": "Validation of a modified Early Warning Score in medical admissions"
      },
      "formula": "mews",
      "formula_expression": "MEWS = sbp_points + hr_points + rr_points + temp_points + avpu_points; Subbe 2001 Table 1; max 14",
      "systolic_mm_hg": 120,
      "max_score": 14,
      "score": 0,
      "temperature_c": 37.0,
      "heart_rate_bpm": 80,
      "avpu": "alert",
      "respiratory_rate": 12,
      "score_ge_5": false
    }
  ]
}

Response

Example JSON

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

{
  "components": [
    {
      "value": 120,
      "factor": "systolic_mm_hg",
      "points": 0,
      "present": false
    },
    {
      "value": 80,
      "factor": "heart_rate_bpm",
      "points": 0,
      "present": false
    },
    {
      "value": 12,
      "factor": "respiratory_rate",
      "points": 0,
      "present": false
    },
    {
      "value": 37.0,
      "factor": "temperature_c",
      "points": 0,
      "present": false
    },
    {
      "value": "alert",
      "factor": "avpu",
      "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": "Subbe CP, Kruger M, Rutherford P, Gemmel L",
    "doi": "10.1093/qjmed/94.10.521",
    "id": "subbe-2001",
    "pmid": "11588210",
    "source": "QJM. 2001;94(10):521-526",
    "title": "Validation of a modified Early Warning Score in medical admissions"
  },
  "formula": "mews",
  "formula_expression": "MEWS = sbp_points + hr_points + rr_points + temp_points + avpu_points; Subbe 2001 Table 1; max 14",
  "systolic_mm_hg": 120,
  "max_score": 14,
  "score": 0,
  "temperature_c": 37.0,
  "heart_rate_bpm": 80,
  "avpu": "alert",
  "respiratory_rate": 12,
  "score_ge_5": false
}

Client errors (HTTP 400)

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

Related tools

• qSOFA — Compute the Sepsis-3 qSOFA score from respiratory rate, caller-assigned altered mentation, and systolic blood pressure.
• SIRS — Compute the Bone 1992 ACCP/SCCM SIRS criteria from temperature, heart rate, respiratory rate, and WBC, with optional PaCO2 and band percent.
• SOFA — Compute the Vincent 1996 SOFA score from PaO2/FiO2, platelets, bilirubin, MAP and adrenergic agents, GCS, and creatinine or urine output.

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.