Emergency · LIVE

Mood Disorder Questionnaire (MDQ)

MDQ

Sum thirteen caller-assigned Hirschfeld 2000 MDQ yes/no lifetime manic/hypomanic items and return the published symptom count (max 13) and that paper's positive-screen rule.

LIVE $0.005 USDC GET /api/calc/mdq

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

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

Sum thirteen caller-assigned Hirschfeld 2000 MDQ yes/no lifetime manic/hypomanic items and return the published symptom count (max 13) and that paper's positive-screen rule.

When to use

When an agent has already assigned the thirteen Hirschfeld 2000 symptom flags plus same-period clustering and moderate/serious problem and needs that paper's score and positive-screen rule, not a bipolar diagnosis and not Hirschfeld 2003 general-population cutoff tweaks.

When not to use

• Not a medical device and not a bipolar diagnosis or treatment order.
• magent does not interview the patient. Each flag is caller-assigned yes/no.
• This is Hirschfeld 2000 MDQ only: thirteen symptom items (yes = 1, max 13) and a positive screen at score ≥7 AND same_period AND moderate_or_serious_problem (that paper: sensitivity 0.73 and specificity 0.90 in a psychiatric outpatient sample). magent does not apply Hirschfeld 2003 general-population cutoff tweaks.
• Not PHQ-9, not QIDS, and not MDI.

Formula

MDQ = felt_hyper + irritable + more_self_confident + less_sleep + more_talkative + racing_thoughts + easily_distracted + more_energy + more_active + more_social + more_interested_in_sex + unusual_risky + spending_trouble; each 1 if true; max 13; Hirschfeld 2000 positive screen is score ≥7 AND same_period AND moderate_or_serious_problem

Citation

Title

Development and validation of a screening instrument for bipolar spectrum disorder: the Mood Disorder Questionnaire

Authors

Hirschfeld RM, Williams JB, Spitzer RL, Calabrese JR, Flynn L, Keck PE Jr, Lewis L, McElroy SL, Post RM, Rapport DJ, Russell JM, Sachs GS, Zajecka J

Source

Am J Psychiatry. 2000;157(11):1873-1875

DOI

10.1176/appi.ajp.157.11.1873

Worked example

Also searched as

• Mood Disorder Questionnaire
• MDQ
• Hirschfeld MDQ
• bipolar spectrum screen
• MDQ score
• Hirschfeld 2000 MDQ
• manic hypomanic questionnaire
• bipolar screening questionnaire

Try

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

/api/calc/mdq?felt_hyper=false&irritable=false&more_self_confident=false&less_sleep=false&more_talkative=false&racing_thoughts=false&easily_distracted=false&more_energy=false&more_active=false&more_social=false&more_interested_in_sex=false&unusual_risky=false&spending_trouble=false&same_period=false&moderate_or_serious_problem=false

Full URL: https://api.magentlab.com/api/calc/mdq?felt_hyper=false&irritable=false&more_self_confident=false&less_sleep=false&more_talkative=false&racing_thoughts=false&easily_distracted=false&more_energy=false&more_active=false&more_social=false&more_interested_in_sex=false&unusual_risky=false&spending_trouble=false&same_period=false&moderate_or_serious_problem=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/mdq?felt_hyper=false&irritable=false&more_self_confident=false&less_sleep=false&more_talkative=false&racing_thoughts=false&easily_distracted=false&more_energy=false&more_active=false&more_social=false&more_interested_in_sex=false&unusual_risky=false&spending_trouble=false&same_period=false&moderate_or_serious_problem=false"

Parameters

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/mdq 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": [
    {
      "easily_distracted": "false",
      "felt_hyper": "false",
      "irritable": "false",
      "less_sleep": "false",
      "moderate_or_serious_problem": "false",
      "more_active": "false",
      "more_energy": "false",
      "more_interested_in_sex": "false",
      "more_self_confident": "false",
      "more_social": "false",
      "more_talkative": "false",
      "racing_thoughts": "false",
      "same_period": "false",
      "spending_trouble": "false",
      "unusual_risky": "false"
    },
    {
      "easily_distracted": "false",
      "felt_hyper": "false",
      "irritable": "false",
      "less_sleep": "false",
      "moderate_or_serious_problem": "false",
      "more_active": "false",
      "more_energy": "false",
      "more_interested_in_sex": "false",
      "more_self_confident": "false",
      "more_social": "false",
      "more_talkative": "false",
      "racing_thoughts": "false",
      "same_period": "false",
      "spending_trouble": "false",
      "unusual_risky": "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/mdq",
  "items": [
    {
      "components": [
        {
          "factor": "felt_hyper",
          "points": 0,
          "present": false
        },
        {
          "factor": "irritable",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_self_confident",
          "points": 0,
          "present": false
        },
        {
          "factor": "less_sleep",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_talkative",
          "points": 0,
          "present": false
        },
        {
          "factor": "racing_thoughts",
          "points": 0,
          "present": false
        },
        {
          "factor": "easily_distracted",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_energy",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_active",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_social",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_interested_in_sex",
          "points": 0,
          "present": false
        },
        {
          "factor": "unusual_risky",
          "points": 0,
          "present": false
        },
        {
          "factor": "spending_trouble",
          "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": "Hirschfeld RM, Williams JB, Spitzer RL, Calabrese JR, Flynn L, Keck PE Jr, Lewis L, McElroy SL, Post RM, Rapport DJ, Russell JM, Sachs GS, Zajecka J",
        "doi": "10.1176/appi.ajp.157.11.1873",
        "id": "hirschfeld-2000",
        "pmid": "11058490",
        "source": "Am J Psychiatry. 2000;157(11):1873-1875",
        "title": "Development and validation of a screening instrument for bipolar spectrum disorder: the Mood Disorder Questionnaire"
      },
      "formula": "mdq",
      "formula_expression": "MDQ = felt_hyper + irritable + more_self_confident + less_sleep + more_talkative + racing_thoughts + easily_distracted + more_energy + more_active + more_social + more_interested_in_sex + unusual_risky + spending_trouble; each 1 if true; max 13; Hirschfeld 2000 positive screen is score ≥7 AND same_period AND moderate_or_serious_problem",
      "max_score": 13,
      "score": 0,
      "moderate_or_serious_problem": false,
      "positive_screen": false,
      "same_period": false
    },
    {
      "components": [
        {
          "factor": "felt_hyper",
          "points": 0,
          "present": false
        },
        {
          "factor": "irritable",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_self_confident",
          "points": 0,
          "present": false
        },
        {
          "factor": "less_sleep",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_talkative",
          "points": 0,
          "present": false
        },
        {
          "factor": "racing_thoughts",
          "points": 0,
          "present": false
        },
        {
          "factor": "easily_distracted",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_energy",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_active",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_social",
          "points": 0,
          "present": false
        },
        {
          "factor": "more_interested_in_sex",
          "points": 0,
          "present": false
        },
        {
          "factor": "unusual_risky",
          "points": 0,
          "present": false
        },
        {
          "factor": "spending_trouble",
          "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": "Hirschfeld RM, Williams JB, Spitzer RL, Calabrese JR, Flynn L, Keck PE Jr, Lewis L, McElroy SL, Post RM, Rapport DJ, Russell JM, Sachs GS, Zajecka J",
        "doi": "10.1176/appi.ajp.157.11.1873",
        "id": "hirschfeld-2000",
        "pmid": "11058490",
        "source": "Am J Psychiatry. 2000;157(11):1873-1875",
        "title": "Development and validation of a screening instrument for bipolar spectrum disorder: the Mood Disorder Questionnaire"
      },
      "formula": "mdq",
      "formula_expression": "MDQ = felt_hyper + irritable + more_self_confident + less_sleep + more_talkative + racing_thoughts + easily_distracted + more_energy + more_active + more_social + more_interested_in_sex + unusual_risky + spending_trouble; each 1 if true; max 13; Hirschfeld 2000 positive screen is score ≥7 AND same_period AND moderate_or_serious_problem",
      "max_score": 13,
      "score": 0,
      "moderate_or_serious_problem": false,
      "positive_screen": false,
      "same_period": false
    }
  ]
}

Response

Example JSON

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

{
  "components": [
    {
      "factor": "felt_hyper",
      "points": 0,
      "present": false
    },
    {
      "factor": "irritable",
      "points": 0,
      "present": false
    },
    {
      "factor": "more_self_confident",
      "points": 0,
      "present": false
    },
    {
      "factor": "less_sleep",
      "points": 0,
      "present": false
    },
    {
      "factor": "more_talkative",
      "points": 0,
      "present": false
    },
    {
      "factor": "racing_thoughts",
      "points": 0,
      "present": false
    },
    {
      "factor": "easily_distracted",
      "points": 0,
      "present": false
    },
    {
      "factor": "more_energy",
      "points": 0,
      "present": false
    },
    {
      "factor": "more_active",
      "points": 0,
      "present": false
    },
    {
      "factor": "more_social",
      "points": 0,
      "present": false
    },
    {
      "factor": "more_interested_in_sex",
      "points": 0,
      "present": false
    },
    {
      "factor": "unusual_risky",
      "points": 0,
      "present": false
    },
    {
      "factor": "spending_trouble",
      "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": "Hirschfeld RM, Williams JB, Spitzer RL, Calabrese JR, Flynn L, Keck PE Jr, Lewis L, McElroy SL, Post RM, Rapport DJ, Russell JM, Sachs GS, Zajecka J",
    "doi": "10.1176/appi.ajp.157.11.1873",
    "id": "hirschfeld-2000",
    "pmid": "11058490",
    "source": "Am J Psychiatry. 2000;157(11):1873-1875",
    "title": "Development and validation of a screening instrument for bipolar spectrum disorder: the Mood Disorder Questionnaire"
  },
  "formula": "mdq",
  "formula_expression": "MDQ = felt_hyper + irritable + more_self_confident + less_sleep + more_talkative + racing_thoughts + easily_distracted + more_energy + more_active + more_social + more_interested_in_sex + unusual_risky + spending_trouble; each 1 if true; max 13; Hirschfeld 2000 positive screen is score ≥7 AND same_period AND moderate_or_serious_problem",
  "max_score": 13,
  "score": 0,
  "moderate_or_serious_problem": false,
  "positive_screen": false,
  "same_period": false
}

Client errors (HTTP 400)

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

Related tools

• 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.
• QIDS — Map 16 caller-assigned Rush 2003 QIDS-SR integers (0-3) to nine DSM-IV domains (sleep, appetite/weight, and psychomotor are each the published max of their items) and return the 0-27 total and IRT severity band.
• MDI — Map 12 caller-assigned Bech 2001 MDI integers (0-5 over the last 2 weeks) to ten DSM-IV/ICD-10 symptom items (appetite and psychomotor are each the published max of their pair) and return the 0-50 total and whether it meets this paper's optimal cutoff of 26.

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.