# MuLBSTA viral pneumonia score MuLBSTA Status: LIVE Price: $0.005 USDC `GET /api/calc/mulbsta` HTML: https://magentlab.com/docs/mulbsta Markdown: https://magentlab.com/docs/mulbsta.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Sum Guo 2019 MuLBSTA points from age, exclusive smoking status, absolute lymphocyte count, and caller-assigned flags, and return the published total (max 20) and low/high band. ## When to use When an agent has already assigned Guo 2019 MuLBSTA inputs and needs the published point total and low (0-11) or high (≥12) band, not a viral-species diagnosis or a treatment order. ## When not to use - Not a medical device and not a viral-species diagnosis, site-of-care decision, or treatment order. - magent does not read imaging or assign smoking history. multilobular_infiltrates, bacterial_coinfection, hypertension, and smoking are caller-assigned. - Smoking is mutually exclusive: never (0), former / quit-smoker (2), or current / acute-smoker (3). Current and former cannot both apply. Max score is 20, not the paper Table 5 12-22 wording. - Bands follow Guo 2019 only: low score 0-11 (paper mortality 5.07%) and high score ≥12 (paper 33.92%). No other cut-points. ## Formula ``` MuLBSTA = multilobular_infiltrates 5 + lymphocyte_k_ul<=0.8 4 + bacterial_coinfection 4 + smoking (never 0, former 2, current 3; exclusive) + hypertension 2 + age>=60 2; Guo 2019; max 20; low 0-11, high >=12 ``` ## Citation [Clinical Features Predicting Mortality Risk in Patients With Viral Pneumonia: The MuLBSTA Score](https://doi.org/10.3389/fmicb.2019.02752) Guo L, Wei D, Zhang X, Wu Y, Li Q, Zhou M, Qu J Front Microbiol. 2019;10:2752 DOI: [10.3389/fmicb.2019.02752](https://doi.org/10.3389/fmicb.2019.02752) ## Worked example ### Age 50, never smoked, lymphocytes 1.5, all flags false Given: `age=50, bacterial_coinfection=false, hypertension=false, lymphocyte_k_ul=1.5, multilobular_infiltrates=false, smoking=never` 1. Age <60 → 0; smoking never → 0; lymphocyte_k_ul 1.5 >0.8 → 0; all flags false → 0 2. Score = 0 (max 20); mulbsta_band low ### Current smoking, lymphopenia, and multilobular infiltrates Given: `age=50, bacterial_coinfection=false, hypertension=false, lymphocyte_k_ul=0.8, multilobular_infiltrates=true, smoking=current` 1. multilobular_infiltrates → 5; lymphocyte_k_ul 0.8 → 4; smoking current → 3 2. Score = 12 (max 20); mulbsta_band high ## Also searched as - MuLBSTA - MuLBSTA score - Guo viral pneumonia score - multilobar lymphocyte bacterial smoking - viral pneumonia mortality score - Guo 2019 MuLBSTA ## Parameters - `age` (integer, required): Age in years (18-120). Age ≥60 scores 2 (Guo 2019). magent does not compute age. - `smoking` (string, required): Exclusive Guo 2019 smoking status: never (0), former / quit-smoker (2), or current / acute-smoker (3). Current and former cannot both apply. Assigned by the caller; magent does not assign smoking history. - `lymphocyte_k_ul` (number, required): Absolute lymphocyte count ×10^9/L (0.05-20). Scores 4 when ≤0.8 (Guo 2019). magent does not read a CBC. - `multilobular_infiltrates` (boolean, required): Multilobular infiltrates as assigned by the caller (Guo 2019). true scores 5. magent does not read imaging. - `bacterial_coinfection` (boolean, required): Bacterial coinfection as assigned by the caller (Guo 2019). true scores 4. magent does not diagnose coinfection. - `hypertension` (boolean, required): Hypertension as assigned by the caller (Guo 2019). true scores 2. magent does not take a blood pressure. ## 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/mulbsta` 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": [ { "age": "50", "bacterial_coinfection": "false", "hypertension": "false", "lymphocyte_k_ul": "1.5", "multilobular_infiltrates": "false", "smoking": "never" }, { "age": "50", "bacterial_coinfection": "false", "hypertension": "false", "lymphocyte_k_ul": "1.5", "multilobular_infiltrates": "false", "smoking": "never" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/mulbsta Example 200: ```json { "count": 2, "path": "/api/calc/mulbsta", "items": [ { "components": [ { "factor": "multilobular_infiltrates", "points": 0, "present": false }, { "value": 1.5, "factor": "lymphocyte_le_0_8", "points": 0, "present": false }, { "factor": "bacterial_coinfection", "points": 0, "present": false }, { "value": "never", "factor": "smoking", "points": 0, "present": false }, { "factor": "hypertension", "points": 0, "present": false }, { "value": 50, "factor": "age_ge_60", "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": "Guo L, Wei D, Zhang X, Wu Y, Li Q, Zhou M, Qu J", "doi": "10.3389/fmicb.2019.02752", "id": "guo-2019", "pmid": "31849894", "source": "Front Microbiol. 2019;10:2752", "title": "Clinical Features Predicting Mortality Risk in Patients With Viral Pneumonia: The MuLBSTA Score" }, "formula": "mulbsta", "formula_expression": "MuLBSTA = multilobular_infiltrates 5 + lymphocyte_k_ul<=0.8 4 + bacterial_coinfection 4 + smoking (never 0, former 2, current 3; exclusive) + hypertension 2 + age>=60 2; Guo 2019; max 20; low 0-11, high >=12", "max_score": 20, "score": 0, "age_years": 50, "lymphocyte_k_ul": 1.5, "mulbsta_band": "low", "smoking": "never" }, { "components": [ { "factor": "multilobular_infiltrates", "points": 0, "present": false }, { "value": 1.5, "factor": "lymphocyte_le_0_8", "points": 0, "present": false }, { "factor": "bacterial_coinfection", "points": 0, "present": false }, { "value": "never", "factor": "smoking", "points": 0, "present": false }, { "factor": "hypertension", "points": 0, "present": false }, { "value": 50, "factor": "age_ge_60", "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": "Guo L, Wei D, Zhang X, Wu Y, Li Q, Zhou M, Qu J", "doi": "10.3389/fmicb.2019.02752", "id": "guo-2019", "pmid": "31849894", "source": "Front Microbiol. 2019;10:2752", "title": "Clinical Features Predicting Mortality Risk in Patients With Viral Pneumonia: The MuLBSTA Score" }, "formula": "mulbsta", "formula_expression": "MuLBSTA = multilobular_infiltrates 5 + lymphocyte_k_ul<=0.8 4 + bacterial_coinfection 4 + smoking (never 0, former 2, current 3; exclusive) + hypertension 2 + age>=60 2; Guo 2019; max 20; low 0-11, high >=12", "max_score": 20, "score": 0, "age_years": 50, "lymphocyte_k_ul": 1.5, "mulbsta_band": "low", "smoking": "never" } ] } ``` ## Response fields - `formula` (string): mulbsta - `formula_expression` (string): Exact expression used - `score` (integer): MuLBSTA points 0-20 - `max_score` (integer): Always 20 - `mulbsta_band` (string): Guo 2019 band: low (score 0-11; paper mortality 5.07%) or high (score ≥12; paper 33.92%). Not a treatment order. - `age_years` (integer): Age used for the ≥60 criterion - `smoking` (string): Exclusive smoking status used: never, former, or current - `lymphocyte_k_ul` (number): Absolute lymphocyte count ×10^9/L used for the ≤0.8 criterion - `components` (array): Per-factor points - `citation` (object): Guo et al. Front Microbiol 2019 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "components": [ { "factor": "multilobular_infiltrates", "points": 0, "present": false }, { "value": 1.5, "factor": "lymphocyte_le_0_8", "points": 0, "present": false }, { "factor": "bacterial_coinfection", "points": 0, "present": false }, { "value": "never", "factor": "smoking", "points": 0, "present": false }, { "factor": "hypertension", "points": 0, "present": false }, { "value": 50, "factor": "age_ge_60", "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": "Guo L, Wei D, Zhang X, Wu Y, Li Q, Zhou M, Qu J", "doi": "10.3389/fmicb.2019.02752", "id": "guo-2019", "pmid": "31849894", "source": "Front Microbiol. 2019;10:2752", "title": "Clinical Features Predicting Mortality Risk in Patients With Viral Pneumonia: The MuLBSTA Score" }, "formula": "mulbsta", "formula_expression": "MuLBSTA = multilobular_infiltrates 5 + lymphocyte_k_ul<=0.8 4 + bacterial_coinfection 4 + smoking (never 0, former 2, current 3; exclusive) + hypertension 2 + age>=60 2; Guo 2019; max 20; low 0-11, high >=12", "max_score": 20, "score": 0, "age_years": 50, "lymphocyte_k_ul": 1.5, "mulbsta_band": "low", "smoking": "never" } ``` ## Errors - HTTP 400 `invalid_age`: age must be an integer from 18 to 120 Returned before settlement; you are not charged. - HTTP 400 `invalid_mulbsta_smoking`: smoking must be never, former, or current (Guo 2019 MuLBSTA; current and former are mutually exclusive). Returned before settlement; you are not charged. - HTTP 400 `invalid_lymphocyte_count`: lymphocyte_k_ul must be a number from 0.05 to 20 (absolute lymphocyte count ×10^9/L). 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_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 - [CURB-65](https://magentlab.com/docs/curb65) — Compute the CURB-65 community-acquired pneumonia severity score from age and discrete flags. - [CRB-65](https://magentlab.com/docs/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. - [PSI / PORT](https://magentlab.com/docs/psi-port) — Compute the Fine 1997 Pneumonia Severity Index (PORT) two-step risk class and Table 2 point total for community-acquired pneumonia. ## 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.