MAGENT

Neurology · LIVE

Webster Rating Scale (1968)

Webster Rating Scale

Sum ten caller-assigned Webster 1968 items (each integer 0-3) and return the published 0-30 total.

LIVE $0.005 USDC GET /api/calc/webster

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

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

What it computes

Sum ten caller-assigned Webster 1968 items (each integer 0-3) and return the published 0-30 total.

When to use

When an agent has already assigned Webster 1968 integers 0-3 for the ten clinical items and needs the 0-30 total. magent does not examine the patient or diagnose Parkinson disease.

When not to use

  • Not a medical device and not a Parkinson diagnosis.
  • Historical 1968 10-item 0-30 sum. Each item is a caller-assigned integer 0 (normal) to 3 (severe). magent does not examine the patient.
  • Not MDS-UPDRS. magent does not invent mild/moderate/severe total-score bands.

Formula

Webster = bradykinesia + rigidity + posture + upper_extremity_swing + gait + tremor + facies + seborrhea + speech + self_care; each caller-assigned integer 0-3; max 30

Citation

Title
Critical analysis of the disability in Parkinson's disease
Authors
Webster DD
Source
Mod Treat. 1968;5(2):257-282
DOI
none

Worked example

All items 0

Given: bradykinesia=0facies=0gait=0posture=0rigidity=0seborrhea=0self_care=0speech=0tremor=0upper_extremity_swing=0

  1. bradykinesia 0 + rigidity 0 + posture 0 + upper_extremity_swing 0 + gait 0 + tremor 0 + facies 0 + seborrhea 0 + speech 0 + self_care 0
  2. Score = 0 (max 30)

All items 3

Given: bradykinesia=3facies=3gait=3posture=3rigidity=3seborrhea=3self_care=3speech=3tremor=3upper_extremity_swing=3

  1. bradykinesia 3 + rigidity 3 + posture 3 + upper_extremity_swing 3 + gait 3 + tremor 3 + facies 3 + seborrhea 3 + speech 3 + self_care 3
  2. Score = 30 (max 30)

Also searched as

  • Webster Rating Scale
  • Webster 1968
  • Webster Parkinson's scale
  • Webster disability scale
  • Webster PD score
  • 10-item Webster scale
  • Webster 0-30

Try

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

/api/calc/webster?bradykinesia=0&rigidity=0&posture=0&upper_extremity_swing=0&gait=0&tremor=0&facies=0&seborrhea=0&speech=0&self_care=0

Full URL: https://api.magentlab.com/api/calc/webster?bradykinesia=0&rigidity=0&posture=0&upper_extremity_swing=0&gait=0&tremor=0&facies=0&seborrhea=0&speech=0&self_care=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/webster?bradykinesia=0&rigidity=0&posture=0&upper_extremity_swing=0&gait=0&tremor=0&facies=0&seborrhea=0&speech=0&self_care=0"

Parameters

Name Type Required Description
bradykinesia integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
rigidity integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
posture integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
upper_extremity_swing integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
gait integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
tremor integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
facies integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
seborrhea integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
speech integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient.
self_care integer required Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine 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/webster 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": [
    {
      "bradykinesia": "0",
      "facies": "0",
      "gait": "0",
      "posture": "0",
      "rigidity": "0",
      "seborrhea": "0",
      "self_care": "0",
      "speech": "0",
      "tremor": "0",
      "upper_extremity_swing": "0"
    },
    {
      "bradykinesia": "0",
      "facies": "0",
      "gait": "0",
      "posture": "0",
      "rigidity": "0",
      "seborrhea": "0",
      "self_care": "0",
      "speech": "0",
      "tremor": "0",
      "upper_extremity_swing": "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/webster",
  "items": [
    {
      "components": [
        {
          "value": 0,
          "factor": "bradykinesia",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "rigidity",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "posture",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "upper_extremity_swing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "gait",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "tremor",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "facies",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "seborrhea",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "speech",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "self_care",
          "points": 0,
          "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": "Webster DD",
        "id": "webster-1968",
        "pmid": "5655944",
        "source": "Mod Treat. 1968;5(2):257-282",
        "title": "Critical analysis of the disability in Parkinson's disease"
      },
      "formula": "webster",
      "formula_expression": "Webster = bradykinesia + rigidity + posture + upper_extremity_swing + gait + tremor + facies + seborrhea + speech + self_care; each caller-assigned integer 0-3; max 30",
      "max_score": 30,
      "score": 0
    },
    {
      "components": [
        {
          "value": 0,
          "factor": "bradykinesia",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "rigidity",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "posture",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "upper_extremity_swing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "gait",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "tremor",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "facies",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "seborrhea",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "speech",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "self_care",
          "points": 0,
          "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": "Webster DD",
        "id": "webster-1968",
        "pmid": "5655944",
        "source": "Mod Treat. 1968;5(2):257-282",
        "title": "Critical analysis of the disability in Parkinson's disease"
      },
      "formula": "webster",
      "formula_expression": "Webster = bradykinesia + rigidity + posture + upper_extremity_swing + gait + tremor + facies + seborrhea + speech + self_care; each caller-assigned integer 0-3; max 30",
      "max_score": 30,
      "score": 0
    }
  ]
}

Response

Field Type Description
formula string webster
formula_expression string Exact expression used
score integer Webster 1968 points 0-30
max_score integer Always 30
components array Per-item caller-assigned points
citation object Webster Mod Treat 1968 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": "bradykinesia",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "rigidity",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "posture",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "upper_extremity_swing",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "gait",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "tremor",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "facies",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "seborrhea",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "speech",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "self_care",
      "points": 0,
      "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": "Webster DD",
    "id": "webster-1968",
    "pmid": "5655944",
    "source": "Mod Treat. 1968;5(2):257-282",
    "title": "Critical analysis of the disability in Parkinson's disease"
  },
  "formula": "webster",
  "formula_expression": "Webster = bradykinesia + rigidity + posture + upper_extremity_swing + gait + tremor + facies + seborrhea + speech + self_care; each caller-assigned integer 0-3; max 30",
  "max_score": 30,
  "score": 0
}

Client errors (HTTP 400)

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

HTTP Code When
400 invalid_webster Webster items must each be integers 0-3 as published in Webster 1968. 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

  • Modified Hoehn and Yahr — Echo the caller-assigned Goetz 2004 Table 1 modified Hoehn and Yahr stage (1.0, 1.5, 2.0, 2.5, 3.0, 4.0, or 5.0) with the published description. No stage 0. magent does not examine the patient.
  • Schwab and England ADL — Return the Schwab and England 1969 ADL percent 0-100 from a caller-assigned integer, with a stable label.

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.