Stanford Sleepiness Scale (Hoddes 1973)

Stanford Sleepiness

Return the Hoddes 1973 Stanford Sleepiness Scale degree 1-7 from a caller-assigned integer, with the published degree wording.

LIVE $0.005 USDC GET /api/calc/stanford_sleepiness

Markdown: /docs/stanford-sleepiness.md · Canonical: https://magentlab.com/docs/stanford-sleepiness

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

What it computes

Return the Hoddes 1973 Stanford Sleepiness Scale degree 1-7 from a caller-assigned integer, with the published degree wording.

When to use

When an agent already has a Stanford Sleepiness Scale degree 1-7 as in Hoddes 1973 and must not invent a pathologic-sleepiness cutoff or an Epworth Sleepiness Scale score. magent does not observe the patient.

When not to use

Not a medical device and not a diagnosis of a sleep disorder. magent does not observe the patient.
The caller assigns stanford_sleepiness 1-7. magent does not interview the patient or apply an Epworth Sleepiness Scale.
Hoddes 1973 is a single current-state degree 1-7. It does not publish a pathologic-sleepiness cutoff.

Formula

Stanford Sleepiness Scale degree 1-7 as assigned by the caller (Hoddes 1973); max 7

Citation

Title: Quantification of sleepiness: a new approach
Authors: Hoddes E, Zarcone V, Smythe H, Phillips R, Dement WC
Source: Psychophysiology. 1973;10(4):431-436
DOI: 10.1111/j.1469-8986.1973.tb00801.x

Worked example

Degree 1 alert, wide awake

Given: stanford_sleepiness=1

stanford_sleepiness 1 → score 1; max 7

Also searched as

Stanford Sleepiness Scale
SSS
Hoddes SSS
Stanford SSS 1-7
degree of sleepiness
subjective sleepiness scale
Hoddes 1973 sleepiness

Try

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

/api/calc/stanford_sleepiness?stanford_sleepiness=1

Full URL: https://api.magentlab.com/api/calc/stanford_sleepiness?stanford_sleepiness=1

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/stanford_sleepiness?stanford_sleepiness=1"

Parameters

Name	Type	Required	Description
`stanford_sleepiness`	integer	required	Hoddes 1973 Stanford Sleepiness Scale degree 1-7 as assigned by the caller (1 feeling active and vital, alert, wide awake; 2 functioning at a high level, but not at peak, able to concentrate; 3 relaxed, awake, not at full alertness, responsive; 4 a little foggy, not at peak, let down; 5 fogginess, beginning to lose interest in remaining awake, slowed down; 6 sleepiness, prefer to be lying down, fighting sleep, woozy; 7 almost in reverie, sleep onset soon, lost struggle to remain awake). Not Epworth. magent does not observe 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/stanford_sleepiness 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": [
    {
      "stanford_sleepiness": "1"
    },
    {
      "stanford_sleepiness": "1"
    }
  ]
}

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/stanford_sleepiness",
  "items": [
    {
      "description": "Feeling active and vital; alert; wide awake.",
      "components": [
        {
          "factor": "stanford_sleepiness",
          "points": 1,
          "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": "Hoddes E, Zarcone V, Smythe H, Phillips R, Dement WC",
        "doi": "10.1111/j.1469-8986.1973.tb00801.x",
        "id": "hoddes-1973",
        "pmid": "4716586",
        "source": "Psychophysiology. 1973;10(4):431-436",
        "title": "Quantification of sleepiness: a new approach"
      },
      "formula": "stanford_sleepiness",
      "formula_expression": "Stanford Sleepiness Scale degree 1-7 as assigned by the caller (Hoddes 1973); max 7",
      "max_score": 7,
      "score": 1,
      "stanford_sleepiness": 1
    },
    {
      "description": "Feeling active and vital; alert; wide awake.",
      "components": [
        {
          "factor": "stanford_sleepiness",
          "points": 1,
          "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": "Hoddes E, Zarcone V, Smythe H, Phillips R, Dement WC",
        "doi": "10.1111/j.1469-8986.1973.tb00801.x",
        "id": "hoddes-1973",
        "pmid": "4716586",
        "source": "Psychophysiology. 1973;10(4):431-436",
        "title": "Quantification of sleepiness: a new approach"
      },
      "formula": "stanford_sleepiness",
      "formula_expression": "Stanford Sleepiness Scale degree 1-7 as assigned by the caller (Hoddes 1973); max 7",
      "max_score": 7,
      "score": 1,
      "stanford_sleepiness": 1
    }
  ]
}

Response

Field	Type	Description
`formula`	string	stanford_sleepiness
`formula_expression`	string	Published degree rule
`stanford_sleepiness`	integer	Caller-assigned Stanford Sleepiness Scale degree 1-7
`score`	integer	Same as stanford_sleepiness
`max_score`	integer	7
`description`	string	Hoddes 1973 wording for that degree
`components`	array	stanford_sleepiness component
`citation`	object	Hoddes 1973
`disclaimer`	string	Not a medical device

Example JSON

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

{
  "description": "Feeling active and vital; alert; wide awake.",
  "components": [
    {
      "factor": "stanford_sleepiness",
      "points": 1,
      "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": "Hoddes E, Zarcone V, Smythe H, Phillips R, Dement WC",
    "doi": "10.1111/j.1469-8986.1973.tb00801.x",
    "id": "hoddes-1973",
    "pmid": "4716586",
    "source": "Psychophysiology. 1973;10(4):431-436",
    "title": "Quantification of sleepiness: a new approach"
  },
  "formula": "stanford_sleepiness",
  "formula_expression": "Stanford Sleepiness Scale degree 1-7 as assigned by the caller (Hoddes 1973); max 7",
  "max_score": 7,
  "score": 1,
  "stanford_sleepiness": 1
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_stanford_sleepiness`	stanford_sleepiness must be an integer from 1 to 7 (Hoddes 1973). 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

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4AT — Sum the Bellelli 2014 4AT items and return unlikely (0), possible cognitive impairment (1–3), or possible delirium (≥4).

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.