# Stanford Sleepiness Scale (Hoddes 1973)

Stanford Sleepiness

Status: LIVE
Price: $0.005 USDC
`GET /api/calc/stanford_sleepiness`
HTML: https://magentlab.com/docs/stanford-sleepiness
Markdown: https://magentlab.com/docs/stanford-sleepiness.md

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

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

## Worked example

### Degree 1 alert, wide awake

Given: `stanford_sleepiness=1`

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

## Parameters

- `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.

Method: `POST /api/calc/stanford_sleepiness`
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": [
    {
      "stanford_sleepiness": "1"
    },
    {
      "stanford_sleepiness": "1"
    }
  ]
}
```

Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/stanford-sleepiness

Example 200:

```json
{
  "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 fields

- `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

Frozen fixture. Not a live lookup.

```json
{
  "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
}
```

## Errors

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

- [RASS](https://magentlab.com/docs/rass) — Return the Sessler 2002 Richmond Agitation-Sedation Scale term and description from a caller-assigned integer -5 to +4.
- [4AT](https://magentlab.com/docs/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.

- 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.