# Webster 1968 Parkinson Rating Scale Calculator

> Webster 1968 Parkinson Rating Scale Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Computes the 10-item Webster 1968 Parkinson rating scale total score (0–30) by summing caller-assigned integer ratings for bradykinesia, rigidity, posture, upper extremity swing, gait, tremor, facies, seborrhea, speech, and self-care.

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/webster
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/webster-1968-parkinson-rating-scale-calculator-4b821435
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ENA8y_hdmAId5n9htWwfx

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability webster-1968-parkinson-rating-scale-calculator-4b821435
```

Example prompt: Calculate the Webster 1968 Parkinson rating scale total for a patient with these clinician-assigned scores: bradykinesia 2, rigidity 1, posture 1, upper extremity swing 2, gait 1, tremor 2, facies 1, seborrhea 0, speech 1, self-care 1.

## When to prefer this

Use this endpoint when you need a deterministic, auditable arithmetic sum of caller-assigned Webster 1968 items and want a published, historically recognized 10-item motor scale total. Prefer it over MDS-UPDRS calculators when working with legacy datasets or studies that used the original Webster 1968 instrument. It is not a diagnostic tool and does not interpret the score.

## Known failure modes

- Missing any of the ten required query parameters returns a validation error
- Any item value outside the integer range 0–3 is rejected
- Non-integer (float or string) values for item scores cause a schema validation failure
- Payment failure via x402 protocol results in a 402 response before calculation occurs

## How this service works

Webster 1968 rating scale: ten caller-assigned integers 0-3 (bradykinesia, rigidity, posture, upper_extremity_swing, gait, tremor, facies, seborrhea, speech, self_care). magent sums only (max 30) and does not examine the patient. Score only; magent does not invent mild/moderate/severe total-score bands. Historical 10-item 0-30 sum. Not MDS-UPDRS and not a Parkinson diagnosis. Not a medical device.

## Output

Returns the Webster 1968 total score as an integer between 0 and 30, computed by summing the ten caller-provided item ratings (each 0–3). No interpretation bands (mild/moderate/severe) are generated; the endpoint returns only the arithmetic sum.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "required": [
      "bradykinesia",
      "rigidity",
      "posture",
      "upper_extremity_swing",
      "gait",
      "tremor",
      "facies",
      "seborrhea",
      "speech",
      "self_care"
     ],
     "properties": {
      "gait": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "facies": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "speech": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "tremor": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "posture": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "rigidity": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "seborrhea": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "self_care": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "bradykinesia": {
       "type": "integer",
       "description": "Caller-assigned Webster 1968 item, integer 0 (normal) to 3 (severe). magent does not examine the patient."
      },
      "upper_extremity_swing": {
       "type": "i
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/webster-1968-parkinson-rating-scale-calculator-4b821435/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.magentlab.com](https://www.zero.xyz/host/api.magentlab.com/llms.txt)