Emergency · LIVE

SCOFF questionnaire

SCOFF

Sum the five Morgan 1999 SCOFF items and return whether two or more answers are affirmative.

LIVE $0.005 USDC GET /api/calc/scoff

Markdown: /docs/scoff.md · Canonical: https://magentlab.com/docs/scoff

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

Title: The SCOFF questionnaire: assessment of a new screening tool for eating disorders
Authors: Morgan JF, Reid F, Lacey JH
Source: BMJ. 1999;319(7223):1467-1468
DOI: 10.1136/bmj.319.7223.1467

Worked example

All items false

Given: believe_fat_when_others_say_thin=falsefood_dominates_life=falselost_control_over_eating=falselost_more_than_one_stone_3_months=falsemake_yourself_sick=false

score = 0
screen_positive false (threshold is ≥2)

Sick and Control

Given: believe_fat_when_others_say_thin=falsefood_dominates_life=falselost_control_over_eating=truelost_more_than_one_stone_3_months=falsemake_yourself_sick=true

score = 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

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/scoff?make_yourself_sick=false&lost_control_over_eating=false&lost_more_than_one_stone_3_months=false&believe_fat_when_others_say_thin=false&food_dominates_life=false

Full URL: https://api.magentlab.com/api/calc/scoff?make_yourself_sick=false&lost_control_over_eating=false&lost_more_than_one_stone_3_months=false&believe_fat_when_others_say_thin=false&food_dominates_life=false

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/scoff?make_yourself_sick=false&lost_control_over_eating=false&lost_more_than_one_stone_3_months=false&believe_fat_when_others_say_thin=false&food_dominates_life=false"

Parameters

Name	Type	Required	Description
`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.

POST /api/calc/scoff Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 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 (fixture)

{
  "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"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "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

Field	Type	Description
`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

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "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
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

HTTP	Code	When
400	`invalid_flag`	boolean clinical flags must be true or false Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

CAGE — Sum the four Ewing 1984 CAGE items and return whether two or more answers are affirmative.
AUDIT-C — Sum three caller-assigned Bush 1998 AUDIT-C integers (0-4) and return this paper's ≥3 and ≥4 screens.
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. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /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.