# FeverPAIN score FeverPAIN Status: LIVE Price: $0.005 USDC `GET /api/calc/feverpain` HTML: https://magentlab.com/docs/feverpain Markdown: https://magentlab.com/docs/feverpain.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Sum the five Little 2013 FeverPAIN flags for sore throat and return the published 0-1 / 2-3 / 4-5 score group. ## When to use When an agent needs the published FeverPAIN point total and must not invent the five findings or a test-or-treat decision. ## When not to use - Not a medical device. - Not a test-or-treat order and not a diagnosis of streptococcal pharyngitis. - The caller assigns the five clinical findings. magent does not examine the throat. - Bands are published Little 2013 score groups (0-1 / 2-3 / 4-5), not a protocol. ## Formula ``` FeverPAIN = fever_in_past_24h + purulent_tonsils + attends_within_3_days + severely_inflamed_tonsils + no_cough_or_coryza; each 1 if true; max 5 ``` ## Citation [Clinical score and rapid antigen detection test to guide antibiotic use for sore throats: randomised controlled trial of PRISM (primary care streptococcal management)](https://doi.org/10.1136/bmj.f5806) Little P, Hobbs FDR, Moore M, et al. BMJ. 2013;347:f5806 DOI: [10.1136/bmj.f5806](https://doi.org/10.1136/bmj.f5806) ## Worked example ### All five flags false Given: `attends_within_3_days=false, fever_in_past_24h=false, no_cough_or_coryza=false, purulent_tonsils=false, severely_inflamed_tonsils=false` 1. Five findings absent → 0 each 2. Score = 0 (max 5); band 0-1 ### All five flags true Given: `attends_within_3_days=true, fever_in_past_24h=true, no_cough_or_coryza=true, purulent_tonsils=true, severely_inflamed_tonsils=true` 1. Five findings present → 1 each 2. Score = 5 (max 5); band 4-5 ## Also searched as - FeverPAIN score - Fever PAIN - PRISM sore throat score - Little FeverPAIN - streptococcal pharyngitis FeverPAIN - purulent tonsils fever score - sore throat clinical score ## Parameters - `fever_in_past_24h` (boolean, required): Fever in the past 24 hours (Little 2013). true or false as assigned by the caller. - `purulent_tonsils` (boolean, required): Purulent tonsils (Little 2013). true or false as assigned by the caller. - `attends_within_3_days` (boolean, required): Attendance within 3 days of onset (Little 2013). true or false as assigned by the caller. - `severely_inflamed_tonsils` (boolean, required): Severely inflamed tonsils (Little 2013). true or false as assigned by the caller. - `no_cough_or_coryza` (boolean, required): Absence of cough or coryza (Little 2013). true when the published finding is present; false otherwise. Assigned by the caller. ## 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/feverpain` 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": [ { "attends_within_3_days": "false", "fever_in_past_24h": "false", "no_cough_or_coryza": "false", "purulent_tonsils": "false", "severely_inflamed_tonsils": "false" }, { "attends_within_3_days": "false", "fever_in_past_24h": "false", "no_cough_or_coryza": "false", "purulent_tonsils": "false", "severely_inflamed_tonsils": "false" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/feverpain Example 200: ```json { "count": 2, "path": "/api/calc/feverpain", "items": [ { "band": "0-1", "components": [ { "factor": "fever_in_past_24h", "points": 0, "present": false }, { "factor": "purulent_tonsils", "points": 0, "present": false }, { "factor": "attends_within_3_days", "points": 0, "present": false }, { "factor": "severely_inflamed_tonsils", "points": 0, "present": false }, { "factor": "no_cough_or_coryza", "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": "Little P, Hobbs FDR, Moore M, et al.", "doi": "10.1136/bmj.f5806", "id": "little-2013", "pmid": "24114306", "source": "BMJ. 2013;347:f5806", "title": "Clinical score and rapid antigen detection test to guide antibiotic use for sore throats: randomised controlled trial of PRISM (primary care streptococcal management)" }, "formula": "feverpain", "formula_expression": "FeverPAIN = fever_in_past_24h + purulent_tonsils + attends_within_3_days + severely_inflamed_tonsils + no_cough_or_coryza; each 1 if true; max 5", "max_score": 5, "score": 0 }, { "band": "0-1", "components": [ { "factor": "fever_in_past_24h", "points": 0, "present": false }, { "factor": "purulent_tonsils", "points": 0, "present": false }, { "factor": "attends_within_3_days", "points": 0, "present": false }, { "factor": "severely_inflamed_tonsils", "points": 0, "present": false }, { "factor": "no_cough_or_coryza", "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": "Little P, Hobbs FDR, Moore M, et al.", "doi": "10.1136/bmj.f5806", "id": "little-2013", "pmid": "24114306", "source": "BMJ. 2013;347:f5806", "title": "Clinical score and rapid antigen detection test to guide antibiotic use for sore throats: randomised controlled trial of PRISM (primary care streptococcal management)" }, "formula": "feverpain", "formula_expression": "FeverPAIN = fever_in_past_24h + purulent_tonsils + attends_within_3_days + severely_inflamed_tonsils + no_cough_or_coryza; each 1 if true; max 5", "max_score": 5, "score": 0 } ] } ``` ## Response fields - `formula` (string): feverpain - `formula_expression` (string): Exact expression used - `score` (integer): FeverPAIN points 0-5 - `max_score` (integer): 5 - `band` (string): Published Little 2013 score group: 0-1, 2-3, or 4-5. A band, not a test-or-treat order. - `components` (array): Per-finding points - `citation` (object): Little et al. BMJ 2013 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "band": "0-1", "components": [ { "factor": "fever_in_past_24h", "points": 0, "present": false }, { "factor": "purulent_tonsils", "points": 0, "present": false }, { "factor": "attends_within_3_days", "points": 0, "present": false }, { "factor": "severely_inflamed_tonsils", "points": 0, "present": false }, { "factor": "no_cough_or_coryza", "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": "Little P, Hobbs FDR, Moore M, et al.", "doi": "10.1136/bmj.f5806", "id": "little-2013", "pmid": "24114306", "source": "BMJ. 2013;347:f5806", "title": "Clinical score and rapid antigen detection test to guide antibiotic use for sore throats: randomised controlled trial of PRISM (primary care streptococcal management)" }, "formula": "feverpain", "formula_expression": "FeverPAIN = fever_in_past_24h + purulent_tonsils + attends_within_3_days + severely_inflamed_tonsils + no_cough_or_coryza; each 1 if true; max 5", "max_score": 5, "score": 0 } ``` ## Errors - HTTP 400 `invalid_flag`: boolean clinical flags must be true or false 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 - [Centor and McIsaac scores](https://magentlab.com/docs/centor) — Compute the Centor score or the McIsaac age-modified score from four caller-assigned pharyngitis findings. The edition is required. ## 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 echoing accepted, payload, and extensions when present). - 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. - 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.