# DHAKA dehydration score (Levine) DHAKA Status: LIVE Price: $0.005 USDC `GET /api/calc/dhaka` HTML: https://magentlab.com/docs/dhaka Markdown: https://magentlab.com/docs/dhaka.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Sum four caller-assigned Levine 2015 DHAKA Table 3 items and return the published total (max 12) and dehydration band (no, some, or severe). ## When to use When an agent has already assigned Levine 2015 Table 3 general appearance, respirations, skin pinch, and tears and needs the published DHAKA Dehydration Score total and band, not a WHO IMCI algorithm, fluids order, or the DHAKA Tree. ## When not to use - Not a medical device and not a WHO IMCI algorithm clone. This is the empirically derived Levine 2015 DHAKA Dehydration Score (Table 3), not the DHAKA Tree / recursive partitioning model. - Each of the four items is caller-assigned. magent does not examine the child or order fluids. - Derived in children younger than 5 years with acute diarrhea. Age is not a score item and is not required. - Table 3 bands only: no_dehydration 0–1, some_dehydration 2–3, severe_dehydration ≥4. Respirations have only Normal and Deep (no very-deep cell). ## Formula ``` DHAKA = general_appearance (normal 0, restless_irritable 2, lethargic_unconscious 4) + respirations (normal 0, deep 2) + skin_pinch (normal 0, slow 2, very_slow 4) + tears (normal 0, decreased 1, absent 2); Levine 2015 Table 3; max 12 ``` ## Citation [Empirically Derived Dehydration Scoring and Decision Tree Models for Children With Diarrhea: Assessment and Internal Validation in a Prospective Cohort Study in Dhaka, Bangladesh](https://doi.org/10.9745/GHSP-D-15-00097) Levine AC, Glavis-Bloom J, Modi P, Nasrin S, Rege S, Chu C, Schmid CH, Alam NH Glob Health Sci Pract. 2015;3(3):405-418 DOI: [10.9745/GHSP-D-15-00097](https://doi.org/10.9745/GHSP-D-15-00097) ## Worked example ### All items normal Given: `general_appearance=normal, respirations=normal, skin_pinch=normal, tears=normal` 1. general_appearance normal 0 + respirations normal 0 + skin_pinch normal 0 + tears normal 0 2. Score = 0 (max 12); dhaka_band no_dehydration ### Deep respirations only Given: `general_appearance=normal, respirations=deep, skin_pinch=normal, tears=normal` 1. respirations deep 2; other items 0 2. Score = 2 (max 12); dhaka_band some_dehydration ### Maximum Table 3 score Given: `general_appearance=lethargic_unconscious, respirations=deep, skin_pinch=very_slow, tears=absent` 1. lethargic_unconscious 4 + deep 2 + very_slow 4 + absent 2 2. Score = 12 (max 12); dhaka_band severe_dehydration ## Also searched as - dhaka score - pediatric dehydration - diarrhea dehydration - DHAKA dehydration score - Levine DHAKA - DHAKA Table 3 - child diarrhea dehydration ## Parameters - `general_appearance` (string, required): Caller-assigned Levine 2015 Table 3 general appearance: normal (0), restless_irritable (2), or lethargic_unconscious (4). magent does not examine the child. - `respirations` (string, required): Caller-assigned Levine 2015 Table 3 respirations: normal (0) or deep (2). Table 3 has no very-deep cell. magent does not examine the child. - `skin_pinch` (string, required): Caller-assigned Levine 2015 Table 3 skin pinch: normal (0), slow (2), or very_slow (4). magent does not examine the child. - `tears` (string, required): Caller-assigned Levine 2015 Table 3 tears: normal (0), decreased (1), or absent (2). magent does not examine the child. ## 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/dhaka` 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": [ { "general_appearance": "normal", "respirations": "normal", "skin_pinch": "normal", "tears": "normal" }, { "general_appearance": "normal", "respirations": "normal", "skin_pinch": "normal", "tears": "normal" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/dhaka Example 200: ```json { "count": 2, "path": "/api/calc/dhaka", "items": [ { "components": [ { "value": "normal", "factor": "general_appearance", "points": 0, "present": true }, { "value": "normal", "factor": "respirations", "points": 0, "present": true }, { "value": "normal", "factor": "skin_pinch", "points": 0, "present": true }, { "value": "normal", "factor": "tears", "points": 0, "present": true } ], "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": "Levine AC, Glavis-Bloom J, Modi P, Nasrin S, Rege S, Chu C, Schmid CH, Alam NH", "doi": "10.9745/GHSP-D-15-00097", "id": "levine-2015", "pmid": "26374802", "source": "Glob Health Sci Pract. 2015;3(3):405-418", "title": "Empirically Derived Dehydration Scoring and Decision Tree Models for Children With Diarrhea: Assessment and Internal Validation in a Prospective Cohort Study in Dhaka, Bangladesh" }, "formula": "dhaka", "formula_expression": "DHAKA = general_appearance (normal 0, restless_irritable 2, lethargic_unconscious 4) + respirations (normal 0, deep 2) + skin_pinch (normal 0, slow 2, very_slow 4) + tears (normal 0, decreased 1, absent 2); Levine 2015 Table 3; max 12", "max_score": 12, "score": 0, "dhaka_band": "no_dehydration", "general_appearance": "normal", "respirations": "normal", "skin_pinch": "normal", "tears": "normal" }, { "components": [ { "value": "normal", "factor": "general_appearance", "points": 0, "present": true }, { "value": "normal", "factor": "respirations", "points": 0, "present": true }, { "value": "normal", "factor": "skin_pinch", "points": 0, "present": true }, { "value": "normal", "factor": "tears", "points": 0, "present": true } ], "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": "Levine AC, Glavis-Bloom J, Modi P, Nasrin S, Rege S, Chu C, Schmid CH, Alam NH", "doi": "10.9745/GHSP-D-15-00097", "id": "levine-2015", "pmid": "26374802", "source": "Glob Health Sci Pract. 2015;3(3):405-418", "title": "Empirically Derived Dehydration Scoring and Decision Tree Models for Children With Diarrhea: Assessment and Internal Validation in a Prospective Cohort Study in Dhaka, Bangladesh" }, "formula": "dhaka", "formula_expression": "DHAKA = general_appearance (normal 0, restless_irritable 2, lethargic_unconscious 4) + respirations (normal 0, deep 2) + skin_pinch (normal 0, slow 2, very_slow 4) + tears (normal 0, decreased 1, absent 2); Levine 2015 Table 3; max 12", "max_score": 12, "score": 0, "dhaka_band": "no_dehydration", "general_appearance": "normal", "respirations": "normal", "skin_pinch": "normal", "tears": "normal" } ] } ``` ## Response fields - `formula` (string): dhaka - `formula_expression` (string): Exact expression used - `score` (integer): DHAKA Table 3 points 0-12 - `max_score` (integer): Always 12 - `dhaka_band` (string): Levine 2015 Table 3 category: no_dehydration (0-1), some_dehydration (2-3), or severe_dehydration (≥4). A score band, not a fluids order and not the DHAKA Tree. - `general_appearance` (string): Caller-assigned token used: normal, restless_irritable, or lethargic_unconscious - `respirations` (string): Caller-assigned token used: normal or deep - `skin_pinch` (string): Caller-assigned token used: normal, slow, or very_slow - `tears` (string): Caller-assigned token used: normal, decreased, or absent - `components` (array): Per-item caller-assigned points - `citation` (object): Levine et al. Glob Health Sci Pract 2015 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "components": [ { "value": "normal", "factor": "general_appearance", "points": 0, "present": true }, { "value": "normal", "factor": "respirations", "points": 0, "present": true }, { "value": "normal", "factor": "skin_pinch", "points": 0, "present": true }, { "value": "normal", "factor": "tears", "points": 0, "present": true } ], "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": "Levine AC, Glavis-Bloom J, Modi P, Nasrin S, Rege S, Chu C, Schmid CH, Alam NH", "doi": "10.9745/GHSP-D-15-00097", "id": "levine-2015", "pmid": "26374802", "source": "Glob Health Sci Pract. 2015;3(3):405-418", "title": "Empirically Derived Dehydration Scoring and Decision Tree Models for Children With Diarrhea: Assessment and Internal Validation in a Prospective Cohort Study in Dhaka, Bangladesh" }, "formula": "dhaka", "formula_expression": "DHAKA = general_appearance (normal 0, restless_irritable 2, lethargic_unconscious 4) + respirations (normal 0, deep 2) + skin_pinch (normal 0, slow 2, very_slow 4) + tears (normal 0, decreased 1, absent 2); Levine 2015 Table 3; max 12", "max_score": 12, "score": 0, "dhaka_band": "no_dehydration", "general_appearance": "normal", "respirations": "normal", "skin_pinch": "normal", "tears": "normal" } ``` ## Errors - HTTP 400 `invalid_dhaka_appearance`: general_appearance must be normal, restless_irritable, or lethargic_unconscious (Levine 2015 DHAKA Table 3). Returned before settlement; you are not charged. - HTTP 400 `invalid_dhaka_respirations`: respirations must be normal or deep (Levine 2015 DHAKA Table 3). Returned before settlement; you are not charged. - HTTP 400 `invalid_dhaka_skin_pinch`: skin_pinch must be normal, slow, or very_slow (Levine 2015 DHAKA Table 3). Returned before settlement; you are not charged. - HTTP 400 `invalid_dhaka_tears`: tears must be normal, decreased, or absent (Levine 2015 DHAKA Table 3). 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 - [Westley croup](https://magentlab.com/docs/westley-croup) — Sum the Westley 1978 croup clinical score from caller-assigned consciousness, cyanosis, stridor, air entry, and retractions (maximum 17). ## 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.