Emergency · LIVE

National Early Warning Score 2 (NEWS2)

NEWS2

Compute the RCP 2017 National Early Warning Score 2 from respiratory rate, SpO2 (Scale 1 or Scale 2), supplemental oxygen, temperature, systolic BP, heart rate, and caller-assigned ACVPU.

LIVE $0.005 USDC GET /api/calc/news2

Markdown: /docs/news2.md · Canonical: https://magentlab.com/docs/news2

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

What it computes

Compute the RCP 2017 National Early Warning Score 2 from respiratory rate, SpO2 (Scale 1 or Scale 2), supplemental oxygen, temperature, systolic BP, heart rate, and caller-assigned ACVPU.

When to use

When an agent needs the published RCP NEWS2 2017 Chart 1 total and Chart 2 clinical risk, including Scale 2 saturations and new confusion, and must not substitute NEWS 2012 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 measure vitals or examine the patient.
• This is RCP NEWS2 2017 Chart 1 only. It is not NEWS 2012. Scale 2 applies only when the caller assigns it for a prescribed 88-92% SpO2 target in confirmed hypercapnic respiratory failure.
• ACVPU is caller-assigned (alert, confusion, voice, pain, or unresponsive). Confusion, voice, pain, and unresponsive each score 3. magent does not compute GCS here.
• Temperature is in °C as published. magent does not convert Fahrenheit.
• clinical_risk follows RCP 2017 Chart 2 (low / low-medium / medium / high). A single parameter scoring 3 is a RED score and is low-medium unless the aggregate is ≥5 (medium) or ≥7 (high). High wins. It is not a sepsis band and not an ICU-admission order.

Formula

NEWS2 = rr_points + spo2_points + oxygen_points + temp_points + sbp_points + hr_points + acvpu_points; RCP NEWS2 2017 Chart 1 (Scale 1 or Scale 2); max 20

Citation

Title

National Early Warning Score (NEWS) 2: Standardising the assessment of acute-illness severity in the NHS. Updated report of a working party

Authors

Royal College of Physicians

Source

London: RCP; 2017. ISBN 978-1-86016-682-2

DOI

none

Worked example

Also searched as

• national early warning score 2
• NEWS2
• RCP NEWS2
• NEWS 2017
• ACVPU
• SpO2 Scale 2
• early warning score 2

Try

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

/api/calc/news2?systolic_mm_hg=120&heart_rate_bpm=70&respiratory_rate=16&temperature_c=37.0&spo2_percent=98&spo2_scale=1&supplemental_oxygen=false&acvpu=alert

Full URL: https://api.magentlab.com/api/calc/news2?systolic_mm_hg=120&heart_rate_bpm=70&respiratory_rate=16&temperature_c=37.0&spo2_percent=98&spo2_scale=1&supplemental_oxygen=false&acvpu=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/news2?systolic_mm_hg=120&heart_rate_bpm=70&respiratory_rate=16&temperature_c=37.0&spo2_percent=98&spo2_scale=1&supplemental_oxygen=false&acvpu=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/news2 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": [
    {
      "acvpu": "alert",
      "heart_rate_bpm": "70",
      "respiratory_rate": "16",
      "spo2_percent": "98",
      "spo2_scale": "1",
      "supplemental_oxygen": "false",
      "systolic_mm_hg": "120",
      "temperature_c": "37.0"
    },
    {
      "acvpu": "alert",
      "heart_rate_bpm": "70",
      "respiratory_rate": "16",
      "spo2_percent": "98",
      "spo2_scale": "1",
      "supplemental_oxygen": "false",
      "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/news2",
  "items": [
    {
      "components": [
        {
          "value": 16,
          "factor": "respiratory_rate",
          "points": 0,
          "present": false
        },
        {
          "value": 98.0,
          "factor": "spo2_percent",
          "points": 0,
          "present": false
        },
        {
          "value": false,
          "factor": "supplemental_oxygen",
          "points": 0,
          "present": false
        },
        {
          "value": 37.0,
          "factor": "temperature_c",
          "points": 0,
          "present": false
        },
        {
          "value": 120,
          "factor": "systolic_mm_hg",
          "points": 0,
          "present": false
        },
        {
          "value": 70,
          "factor": "heart_rate_bpm",
          "points": 0,
          "present": false
        },
        {
          "value": "alert",
          "factor": "acvpu",
          "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": "Royal College of Physicians",
        "id": "rcp-news2-2017",
        "source": "London: RCP; 2017. ISBN 978-1-86016-682-2",
        "title": "National Early Warning Score (NEWS) 2: Standardising the assessment of acute-illness severity in the NHS. Updated report of a working party"
      },
      "formula": "news2",
      "formula_expression": "NEWS2 = rr_points + spo2_points + oxygen_points + temp_points + sbp_points + hr_points + acvpu_points; RCP NEWS2 2017 Chart 1 (Scale 1 or Scale 2); max 20",
      "systolic_mm_hg": 120,
      "max_score": 20,
      "score": 0,
      "temperature_c": 37.0,
      "heart_rate_bpm": 70,
      "spo2_percent": 98.0,
      "respiratory_rate": 16,
      "clinical_risk": "low",
      "red_score": false,
      "supplemental_oxygen": false,
      "acvpu": "alert",
      "spo2_scale": 1
    },
    {
      "components": [
        {
          "value": 16,
          "factor": "respiratory_rate",
          "points": 0,
          "present": false
        },
        {
          "value": 98.0,
          "factor": "spo2_percent",
          "points": 0,
          "present": false
        },
        {
          "value": false,
          "factor": "supplemental_oxygen",
          "points": 0,
          "present": false
        },
        {
          "value": 37.0,
          "factor": "temperature_c",
          "points": 0,
          "present": false
        },
        {
          "value": 120,
          "factor": "systolic_mm_hg",
          "points": 0,
          "present": false
        },
        {
          "value": 70,
          "factor": "heart_rate_bpm",
          "points": 0,
          "present": false
        },
        {
          "value": "alert",
          "factor": "acvpu",
          "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": "Royal College of Physicians",
        "id": "rcp-news2-2017",
        "source": "London: RCP; 2017. ISBN 978-1-86016-682-2",
        "title": "National Early Warning Score (NEWS) 2: Standardising the assessment of acute-illness severity in the NHS. Updated report of a working party"
      },
      "formula": "news2",
      "formula_expression": "NEWS2 = rr_points + spo2_points + oxygen_points + temp_points + sbp_points + hr_points + acvpu_points; RCP NEWS2 2017 Chart 1 (Scale 1 or Scale 2); max 20",
      "systolic_mm_hg": 120,
      "max_score": 20,
      "score": 0,
      "temperature_c": 37.0,
      "heart_rate_bpm": 70,
      "spo2_percent": 98.0,
      "respiratory_rate": 16,
      "clinical_risk": "low",
      "red_score": false,
      "supplemental_oxygen": false,
      "acvpu": "alert",
      "spo2_scale": 1
    }
  ]
}

Response

Example JSON

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

{
  "components": [
    {
      "value": 16,
      "factor": "respiratory_rate",
      "points": 0,
      "present": false
    },
    {
      "value": 98.0,
      "factor": "spo2_percent",
      "points": 0,
      "present": false
    },
    {
      "value": false,
      "factor": "supplemental_oxygen",
      "points": 0,
      "present": false
    },
    {
      "value": 37.0,
      "factor": "temperature_c",
      "points": 0,
      "present": false
    },
    {
      "value": 120,
      "factor": "systolic_mm_hg",
      "points": 0,
      "present": false
    },
    {
      "value": 70,
      "factor": "heart_rate_bpm",
      "points": 0,
      "present": false
    },
    {
      "value": "alert",
      "factor": "acvpu",
      "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": "Royal College of Physicians",
    "id": "rcp-news2-2017",
    "source": "London: RCP; 2017. ISBN 978-1-86016-682-2",
    "title": "National Early Warning Score (NEWS) 2: Standardising the assessment of acute-illness severity in the NHS. Updated report of a working party"
  },
  "formula": "news2",
  "formula_expression": "NEWS2 = rr_points + spo2_points + oxygen_points + temp_points + sbp_points + hr_points + acvpu_points; RCP NEWS2 2017 Chart 1 (Scale 1 or Scale 2); max 20",
  "systolic_mm_hg": 120,
  "max_score": 20,
  "score": 0,
  "temperature_c": 37.0,
  "heart_rate_bpm": 70,
  "spo2_percent": 98.0,
  "respiratory_rate": 16,
  "clinical_risk": "low",
  "red_score": false,
  "supplemental_oxygen": false,
  "acvpu": "alert",
  "spo2_scale": 1
}

Client errors (HTTP 400)

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

Related tools

• NEWS — Compute the RCP 2012 National Early Warning Score from respiratory rate, SpO2, supplemental oxygen, temperature, systolic BP, heart rate, and caller-assigned AVPU.
• MEWS — Compute the Subbe 2001 modified Early Warning Score from systolic BP, heart rate, respiratory rate, temperature, and caller-assigned AVPU.

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.