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GAD-7

Sum seven caller-assigned Spitzer 2006 GAD-7 integers (0-3) and return the published 0-21 total, 5/10/15 severity cuts, and ≥10 case-finding flag.

LIVE $0.005 USDC GET /api/calc/gad_7

Markdown: /docs/gad-7.md · Canonical: https://magentlab.com/docs/gad-7

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

What it computes

Sum seven caller-assigned Spitzer 2006 GAD-7 integers (0-3) and return the published 0-21 total, 5/10/15 severity cuts, and ≥10 case-finding flag.

When to use

When an agent has already assigned the seven Spitzer 2006 item scores and needs the published GAD-7 total, severity cuts, and ≥10 case-finding flag, not a diagnosis, PHQ-9, or GAD-2.

When not to use

  • Not a medical device and not a GAD diagnosis.
  • nervous, control_worry, worry_too_much, relaxing, restless, irritable, and afraid are caller-assigned integers 0-3 (0 not at all, 1 several days, 2 more than half the days, 3 nearly every day). magent does not interpret the items.
  • Cut points are Spitzer 2006 5 / 10 / 15 (mild / moderate / severe). Scores 0-4 are below the mild cut of 5 and return severity minimal; that is not an extra named class in the paper.
  • case_finding_ge_10 is this paper's GAD-7 ≥10 operating point (sensitivity 89% and specificity 82% for GAD). Not a treatment order. Not PHQ-9. Not GAD-2.

Formula

GAD-7 = nervous + control_worry + worry_too_much + relaxing + restless + irritable + afraid; each caller-assigned 0-3; max 21

Citation

Title
A brief measure for assessing generalized anxiety disorder: the GAD-7
Authors
Spitzer RL, Kroenke K, Williams JBW, Löwe B
Source
Arch Intern Med. 2006;166(10):1092-1097
DOI
10.1001/archinte.166.10.1092

Worked example

All items 0

Given: afraid=0control_worry=0irritable=0nervous=0relaxing=0restless=0worry_too_much=0

  1. nervous 0 + control_worry 0 + worry_too_much 0 + relaxing 0 + restless 0 + irritable 0 + afraid 0
  2. Score = 0 (max 21); severity minimal; case_finding_ge_10 false

Five items at 2

Given: afraid=0control_worry=2irritable=0nervous=2relaxing=2restless=2worry_too_much=2

  1. Score = 10
  2. severity moderate; case_finding_ge_10 true (Spitzer 2006 ≥10 operating point)

All items 3

Given: afraid=3control_worry=3irritable=3nervous=3relaxing=3restless=3worry_too_much=3

  1. Score = 21 (max 21)
  2. severity severe; case_finding_ge_10 true

Also searched as

  • GAD-7
  • GAD7
  • generalized anxiety disorder 7
  • Spitzer GAD-7
  • GAD-7 score
  • anxiety GAD-7
  • GAD seven

Try

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

/api/calc/gad_7?nervous=0&control_worry=0&worry_too_much=0&relaxing=0&restless=0&irritable=0&afraid=0

Full URL: https://api.magentlab.com/api/calc/gad_7?nervous=0&control_worry=0&worry_too_much=0&relaxing=0&restless=0&irritable=0&afraid=0

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/gad_7?nervous=0&control_worry=0&worry_too_much=0&relaxing=0&restless=0&irritable=0&afraid=0"

Parameters

Name Type Required Description
nervous integer required Caller-assigned Spitzer 2006 GAD-7 item 1 points (integer 0-3): feeling nervous, anxious, or on edge. magent does not interpret the item.
control_worry integer required Caller-assigned Spitzer 2006 GAD-7 item 2 points (integer 0-3): not being able to stop or control worrying. magent does not interpret the item.
worry_too_much integer required Caller-assigned Spitzer 2006 GAD-7 item 3 points (integer 0-3): worrying too much about different things. magent does not interpret the item.
relaxing integer required Caller-assigned Spitzer 2006 GAD-7 item 4 points (integer 0-3): trouble relaxing. magent does not interpret the item.
restless integer required Caller-assigned Spitzer 2006 GAD-7 item 5 points (integer 0-3): being so restless that it is hard to sit still. magent does not interpret the item.
irritable integer required Caller-assigned Spitzer 2006 GAD-7 item 6 points (integer 0-3): becoming easily annoyed or irritable. magent does not interpret the item.
afraid integer required Caller-assigned Spitzer 2006 GAD-7 item 7 points (integer 0-3): feeling afraid as if something awful might happen. magent does not interpret the item.

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/gad_7 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": [
    {
      "afraid": "0",
      "control_worry": "0",
      "irritable": "0",
      "nervous": "0",
      "relaxing": "0",
      "restless": "0",
      "worry_too_much": "0"
    },
    {
      "afraid": "0",
      "control_worry": "0",
      "irritable": "0",
      "nervous": "0",
      "relaxing": "0",
      "restless": "0",
      "worry_too_much": "0"
    }
  ]
}

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/gad_7",
  "items": [
    {
      "components": [
        {
          "value": 0,
          "factor": "nervous",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "control_worry",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "worry_too_much",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "relaxing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "restless",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "irritable",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "afraid",
          "points": 0,
          "present": true
        }
      ],
      "severity": "minimal",
      "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": "Spitzer RL, Kroenke K, Williams JBW, Löwe B",
        "doi": "10.1001/archinte.166.10.1092",
        "id": "spitzer-2006",
        "pmid": "16717171",
        "source": "Arch Intern Med. 2006;166(10):1092-1097",
        "title": "A brief measure for assessing generalized anxiety disorder: the GAD-7"
      },
      "formula": "gad_7",
      "formula_expression": "GAD-7 = nervous + control_worry + worry_too_much + relaxing + restless + irritable + afraid; each caller-assigned 0-3; max 21",
      "max_score": 21,
      "score": 0,
      "case_finding_ge_10": false
    },
    {
      "components": [
        {
          "value": 0,
          "factor": "nervous",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "control_worry",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "worry_too_much",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "relaxing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "restless",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "irritable",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "afraid",
          "points": 0,
          "present": true
        }
      ],
      "severity": "minimal",
      "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": "Spitzer RL, Kroenke K, Williams JBW, Löwe B",
        "doi": "10.1001/archinte.166.10.1092",
        "id": "spitzer-2006",
        "pmid": "16717171",
        "source": "Arch Intern Med. 2006;166(10):1092-1097",
        "title": "A brief measure for assessing generalized anxiety disorder: the GAD-7"
      },
      "formula": "gad_7",
      "formula_expression": "GAD-7 = nervous + control_worry + worry_too_much + relaxing + restless + irritable + afraid; each caller-assigned 0-3; max 21",
      "max_score": 21,
      "score": 0,
      "case_finding_ge_10": false
    }
  ]
}

Response

Field Type Description
formula string gad_7
formula_expression string Exact expression used
score integer GAD-7 points 0-21
max_score integer 21
severity string Spitzer 2006 cut points: minimal (0-4, below the mild cut of 5), mild (5-9), moderate (10-14), severe (15-21). Not extra named classes.
case_finding_ge_10 boolean true iff score ≥ 10 (Spitzer 2006: GAD-7 score ≥10 sensitivity 89% and specificity 82% for GAD). Not a GAD diagnosis.
components array Per-item caller-assigned points
citation object Spitzer et al. Arch Intern Med 2006 citation
disclaimer string Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": 0,
      "factor": "nervous",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "control_worry",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "worry_too_much",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "relaxing",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "restless",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "irritable",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "afraid",
      "points": 0,
      "present": true
    }
  ],
  "severity": "minimal",
  "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": "Spitzer RL, Kroenke K, Williams JBW, Löwe B",
    "doi": "10.1001/archinte.166.10.1092",
    "id": "spitzer-2006",
    "pmid": "16717171",
    "source": "Arch Intern Med. 2006;166(10):1092-1097",
    "title": "A brief measure for assessing generalized anxiety disorder: the GAD-7"
  },
  "formula": "gad_7",
  "formula_expression": "GAD-7 = nervous + control_worry + worry_too_much + relaxing + restless + irritable + afraid; each caller-assigned 0-3; max 21",
  "max_score": 21,
  "score": 0,
  "case_finding_ge_10": false
}

Client errors (HTTP 400)

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

HTTP Code When
400 invalid_gad7_item each GAD-7 item must be an integer from 0 to 3 (Spitzer 2006: 0 not at all, 1 several days, 2 more than half the days, 3 nearly every day). 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

  • 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.
  • 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.

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.
  • 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.