# National Early Warning Score 2 (NEWS2) NEWS2 Status: LIVE Price: $0.005 USDC `GET /api/calc/news2` HTML: https://magentlab.com/docs/news2 Markdown: https://magentlab.com/docs/news2.md 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 [National Early Warning Score (NEWS) 2: Standardising the assessment of acute-illness severity in the NHS. Updated report of a working party](https://www.rcp.ac.uk/media/a4ibkkbf/news2-final-report_0_0.pdf) Royal College of Physicians London: RCP; 2017. ISBN 978-1-86016-682-2 DOI: none ## Worked example ### Normal vitals, alert, air, Scale 1 Given: `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` 1. RR 16 → 0; Scale 1 SpO2 98 → 0; oxygen false → 0; temperature 37.0 → 0; SBP 120 → 0; HR 70 → 0; ACVPU alert → 0 2. Score = 0 (max 20); clinical_risk = low; red_score = false ### Confusion (RED score, Chart 2 low-medium) Given: `acvpu=confusion, heart_rate_bpm=70, respiratory_rate=16, spo2_percent=98, spo2_scale=1, supplemental_oxygen=false, systolic_mm_hg=120, temperature_c=37.0` 1. ACVPU confusion → 3; remaining Chart 1 parameters → 0 2. Score = 3 (max 20); red_score = true; clinical_risk = low-medium (RED score, aggregate <5) ## Also searched as - national early warning score 2 - NEWS2 - RCP NEWS2 - NEWS 2017 - ACVPU - SpO2 Scale 2 - early warning score 2 ## Parameters - `systolic_mm_hg` (integer, required): Systolic blood pressure in mm Hg (integer 0-300). RCP NEWS2 2017 Chart 1: ≤90 → 3, 91-100 → 2, 101-110 → 1, 111-219 → 0, ≥220 → 3. - `heart_rate_bpm` (integer, required): Heart rate in beats/min (integer 30-220). RCP NEWS2 2017 Chart 1: ≤40 → 3, 41-50 → 1, 51-90 → 0, 91-110 → 1, 111-130 → 2, ≥131 → 3. - `respiratory_rate` (integer, required): Respiratory rate in breaths/min (integer 0-80). RCP NEWS2 2017 Chart 1: ≤8 → 3, 9-11 → 1, 12-20 → 0, 21-24 → 2, ≥25 → 3. - `temperature_c` (number, required): Temperature in °C (30.0-45.0). RCP NEWS2 2017 Chart 1: ≤35.0 → 3, 35.1-36.0 → 1, 36.1-38.0 → 0, 38.1-39.0 → 1, ≥39.1 → 2. magent does not convert Fahrenheit. - `spo2_percent` (number, required): Oxygen saturation percent (50-100). Scale 1: ≤91 → 3, 92-93 → 2, 94-95 → 1, ≥96 → 0. Scale 2: ≤83 → 3, 84-85 → 2, 86-87 → 1, 88-92 → 0; ≥93 on air → 0; 93-94 on oxygen → 1, 95-96 on oxygen → 2, ≥97 on oxygen → 3. - `spo2_scale` (integer, required): Caller-assigned SpO2 scale (1 or 2). Scale 1 is the usual target. Scale 2 is only for a prescribed 88-92% target in confirmed hypercapnic respiratory failure. magent does not choose the scale. - `supplemental_oxygen` (boolean, required): Any supplemental oxygen as assigned by the caller (true or false). RCP NEWS2 2017 Chart 1: true → 2, false → 0. On Scale 2 this also selects air vs oxygen SpO2 bands at ≥93%. - `acvpu` (string, required): Caller-assigned ACVPU (alert, confusion, voice, pain, or unresponsive). RCP NEWS2 2017 Chart 1: alert → 0; confusion, voice, pain, or unresponsive → 3 each. magent does not compute GCS here. ## 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. Method: `POST /api/calc/news2` Max items: 25 Price: unit_amount + extra_item_amount * (n - 1) (unit 5000 atomic, extra 2000 atomic) Status: 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: ```json { "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" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/news2 Example 200: ```json { "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, "heart_rate_bpm": 70, "spo2_percent": 98.0, "temperature_c": 37.0, "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, "heart_rate_bpm": 70, "spo2_percent": 98.0, "temperature_c": 37.0, "respiratory_rate": 16, "clinical_risk": "low", "red_score": false, "supplemental_oxygen": false, "acvpu": "alert", "spo2_scale": 1 } ] } ``` ## Response fields - `formula` (string): news2 - `formula_expression` (string): Exact expression used - `score` (integer): NEWS2 points 0-20 - `max_score` (integer): Always 20 - `clinical_risk` (string): RCP 2017 Chart 2 clinical risk: low, low-medium, medium, or high. High (aggregate ≥7) wins. - `red_score` (boolean): true when any single parameter scores 3 (Chart 2 RED score). low-medium unless aggregate ≥5 (medium) or ≥7 (high). - `systolic_mm_hg` (integer): Systolic BP used, mm Hg - `heart_rate_bpm` (integer): Heart rate used, bpm - `respiratory_rate` (integer): Respiratory rate used, breaths/min - `temperature_c` (number): Temperature used, °C - `spo2_percent` (number): SpO2 percent used - `spo2_scale` (integer): Caller-assigned SpO2 scale used (1 or 2) - `supplemental_oxygen` (boolean): Supplemental oxygen flag used - `acvpu` (string): Caller-assigned ACVPU used - `components` (array): Per-vital points - `citation` (object): RCP NEWS2 2017 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "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, "heart_rate_bpm": 70, "spo2_percent": 98.0, "temperature_c": 37.0, "respiratory_rate": 16, "clinical_risk": "low", "red_score": false, "supplemental_oxygen": false, "acvpu": "alert", "spo2_scale": 1 } ``` ## Errors - HTTP 400 `invalid_rts_systolic`: systolic_mm_hg must be an integer from 0 to 300. Returned before settlement; you are not charged. - HTTP 400 `invalid_heart_rate`: heart_rate_bpm must be an integer from 30 to 220 Returned before settlement; you are not charged. - HTTP 400 `invalid_rts_respiratory_rate`: respiratory_rate must be an integer from 0 to 80. Returned before settlement; you are not charged. - HTTP 400 `invalid_temperature`: temperature_c must be a number from 30.0 to 45.0. Returned before settlement; you are not charged. - HTTP 400 `invalid_spo2`: spo2_percent must be a number from 50 to 100. Returned before settlement; you are not charged. - HTTP 400 `invalid_flag`: boolean clinical flags must be true or false Returned before settlement; you are not charged. - HTTP 400 `invalid_news2_scale`: spo2_scale must be 1 (usual target) or 2 (prescribed 88-92% target in hypercapnic respiratory failure) (RCP NEWS2 2017). Returned before settlement; you are not charged. - HTTP 400 `invalid_news2_acvpu`: acvpu must be alert, confusion, voice, pain, or unresponsive (RCP NEWS2 2017 ACVPU). Returned before settlement; you are not charged. - HTTP 400 `invalid_items`: POST body must be a JSON object with only an items array Returned before settlement; you are not charged. - HTTP 400 `invalid_item_count`: items must be an array of 1 to 25 objects Returned before settlement; you are not charged. - HTTP 400 `invalid_item`: each items entry must be a JSON object Returned before settlement; you are not charged. Shared HTTP 402 and 503: https://magentlab.com/docs/payments ## Related tools - [NEWS](https://magentlab.com/docs/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](https://magentlab.com/docs/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. - GET the tool with Accept: application/json (do not send Accept: text/html unless you want the human paywall). - HTTP 402 means you have not paid. Decode the base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote. - Sign accepts[0] (exact, EIP-3009) with validBefore = now + maxTimeoutSeconds (600 seconds), or accepts[1] (batch-settlement deposit/voucher) on product GET. Ping and POST {items} stay exact. Magent retries transient facilitator 429/5xx before answering. - Retry the same URL with PAYMENT-SIGNATURE (base64 JSON of accepted and payload). Magent attaches canonical extensions.bazaar on CDP verify/settle; echoing 402 bazaar is optional. - Success is HTTP 200 JSON plus PAYMENT-RESPONSE. exact settles before the tool. batch-settlement verifies (and deposit-settles) before the tool and commits the charge after HTTP 2xx. HTTP 503: retry the same PAYMENT-SIGNATURE. Mint a new exact nonce only after a new HTTP 402. - offered `exact` on eip155:8453: Fixed-price USDC on Base. The buyer authorizes the advertised amount (EIP-3009). magent settles before the tool runs (paymentFlow upfront). extra.assetTransferMethod=eip3009 extra.paymentFlow=upfront. - offered `batch-settlement` on eip155:8453: Payment-channel vouchers claimed later in batches. Exact stays accepts[0]. Same-path POST {items} is still exact. extra.assetTransferMethod=eip3009 extra.paymentFlow=authorization. - not offered `upto`: Not offered. Usage-based: buyer authorizes a ceiling, seller settles the actual amount after work. Reserved for a future metered tool. Not for current calculators or code search. Same-path POST {items} is still scheme exact: one EIP-3009 authorization for GET unit plus $0.002 per extra item. That is not x402 batch-settlement (payment channels / vouchers). Shared HTTP 402 and 503 table: https://magentlab.com/docs/payments Stdio MCP (one process per host): https://magentlab.com/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.