# SCOFF questionnaire SCOFF Status: LIVE Price: $0.005 USDC `GET /api/calc/scoff` HTML: https://magentlab.com/docs/scoff Markdown: https://magentlab.com/docs/scoff.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Sum the five Morgan 1999 SCOFF items and return whether two or more answers are affirmative. ## When to use When an agent needs the published SCOFF point total and Morgan 1999 ≥2 screen and must not invent a diagnosis or interview the patient. ## When not to use - Not a medical device and not a diagnosis of an eating disorder. - magent does not interview the patient. - The caller assigns each flag. magent does not interpret individual items. - This is Morgan 1999 SCOFF only (screen-positive at two or more affirmative answers). magent does not apply later variants. ## Formula ``` SCOFF = make_yourself_sick + lost_control_over_eating + lost_more_than_one_stone_3_months + believe_fat_when_others_say_thin + food_dominates_life; each 1 if true; max 5 ``` ## Citation [The SCOFF questionnaire: assessment of a new screening tool for eating disorders](https://doi.org/10.1136/bmj.319.7223.1467) Morgan JF, Reid F, Lacey JH BMJ. 1999;319(7223):1467-1468 DOI: [10.1136/bmj.319.7223.1467](https://doi.org/10.1136/bmj.319.7223.1467) ## Worked example ### All items false Given: `believe_fat_when_others_say_thin=false, food_dominates_life=false, lost_control_over_eating=false, lost_more_than_one_stone_3_months=false, make_yourself_sick=false` 1. score = 0 2. screen_positive false (threshold is ≥2) ### Sick and Control Given: `believe_fat_when_others_say_thin=false, food_dominates_life=false, lost_control_over_eating=true, lost_more_than_one_stone_3_months=false, make_yourself_sick=true` 1. score = 2 2. screen_positive true ## Also searched as - SCOFF questionnaire - SCOFF eating disorder screen - Morgan SCOFF - sick control one stone fat food - SCOFF score - eating disorder SCOFF ## Parameters - `make_yourself_sick` (boolean, required): Do you make yourself Sick because you feel uncomfortably full? (Morgan 1999). true or false as assigned by the caller. magent does not interview the patient. - `lost_control_over_eating` (boolean, required): Do you worry you have lost Control over how much you eat? (Morgan 1999). true or false as assigned by the caller. magent does not interview the patient. - `lost_more_than_one_stone_3_months` (boolean, required): Have you recently lost more than One stone (14 lb) in a 3-month period? (Morgan 1999). true or false as assigned by the caller. magent does not interview the patient. - `believe_fat_when_others_say_thin` (boolean, required): Do you believe yourself to be Fat when others say you are too thin? (Morgan 1999). true or false as assigned by the caller. magent does not interview the patient. - `food_dominates_life` (boolean, required): Would you say that Food dominates your life? (Morgan 1999). true or false as assigned by the caller. magent does not interview the patient. ## 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/scoff` 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": [ { "believe_fat_when_others_say_thin": "false", "food_dominates_life": "false", "lost_control_over_eating": "false", "lost_more_than_one_stone_3_months": "false", "make_yourself_sick": "false" }, { "believe_fat_when_others_say_thin": "false", "food_dominates_life": "false", "lost_control_over_eating": "false", "lost_more_than_one_stone_3_months": "false", "make_yourself_sick": "false" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/scoff Example 200: ```json { "count": 2, "path": "/api/calc/scoff", "items": [ { "components": [ { "factor": "make_yourself_sick", "points": 0, "present": false }, { "factor": "lost_control_over_eating", "points": 0, "present": false }, { "factor": "lost_more_than_one_stone_3_months", "points": 0, "present": false }, { "factor": "believe_fat_when_others_say_thin", "points": 0, "present": false }, { "factor": "food_dominates_life", "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": "Morgan JF, Reid F, Lacey JH", "doi": "10.1136/bmj.319.7223.1467", "id": "morgan-1999", "pmid": "10582927", "source": "BMJ. 1999;319(7223):1467-1468", "title": "The SCOFF questionnaire: assessment of a new screening tool for eating disorders" }, "formula": "scoff", "formula_expression": "SCOFF = make_yourself_sick + lost_control_over_eating + lost_more_than_one_stone_3_months + believe_fat_when_others_say_thin + food_dominates_life; each 1 if true; max 5", "max_score": 5, "score": 0, "screen_positive": false }, { "components": [ { "factor": "make_yourself_sick", "points": 0, "present": false }, { "factor": "lost_control_over_eating", "points": 0, "present": false }, { "factor": "lost_more_than_one_stone_3_months", "points": 0, "present": false }, { "factor": "believe_fat_when_others_say_thin", "points": 0, "present": false }, { "factor": "food_dominates_life", "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": "Morgan JF, Reid F, Lacey JH", "doi": "10.1136/bmj.319.7223.1467", "id": "morgan-1999", "pmid": "10582927", "source": "BMJ. 1999;319(7223):1467-1468", "title": "The SCOFF questionnaire: assessment of a new screening tool for eating disorders" }, "formula": "scoff", "formula_expression": "SCOFF = make_yourself_sick + lost_control_over_eating + lost_more_than_one_stone_3_months + believe_fat_when_others_say_thin + food_dominates_life; each 1 if true; max 5", "max_score": 5, "score": 0, "screen_positive": false } ] } ``` ## Response fields - `formula` (string): scoff - `formula_expression` (string): Exact expression used - `score` (integer): SCOFF points 0-5 - `max_score` (integer): 5 - `screen_positive` (boolean): true iff score ≥ 2 (Morgan 1999: two or more affirmative answers). Not a diagnosis. - `components` (array): Per-item points - `citation` (object): Morgan BMJ 1999 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "components": [ { "factor": "make_yourself_sick", "points": 0, "present": false }, { "factor": "lost_control_over_eating", "points": 0, "present": false }, { "factor": "lost_more_than_one_stone_3_months", "points": 0, "present": false }, { "factor": "believe_fat_when_others_say_thin", "points": 0, "present": false }, { "factor": "food_dominates_life", "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": "Morgan JF, Reid F, Lacey JH", "doi": "10.1136/bmj.319.7223.1467", "id": "morgan-1999", "pmid": "10582927", "source": "BMJ. 1999;319(7223):1467-1468", "title": "The SCOFF questionnaire: assessment of a new screening tool for eating disorders" }, "formula": "scoff", "formula_expression": "SCOFF = make_yourself_sick + lost_control_over_eating + lost_more_than_one_stone_3_months + believe_fat_when_others_say_thin + food_dominates_life; each 1 if true; max 5", "max_score": 5, "score": 0, "screen_positive": false } ``` ## 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 - [CAGE](https://magentlab.com/docs/cage) — Sum the four Ewing 1984 CAGE items and return whether two or more answers are affirmative. - [AUDIT-C](https://magentlab.com/docs/audit-c) — Sum three caller-assigned Bush 1998 AUDIT-C integers (0-4) and return this paper's ≥3 and ≥4 screens. - [PHQ-9](https://magentlab.com/docs/phq-9) — Sum nine caller-assigned Kroenke 2001 PHQ-9 integers (0-3) and return the published total (max 27), severity cutpoints, and ≥10 screen. ## 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.