# PAS-II Calculator (Wolfe 2005 Patient Activity Scale II)

> PAS-II Calculator (Wolfe 2005 Patient Activity Scale II) 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 Wolfe 2005 Patient Activity Scale II (PAS-II) score from HAQ-II, pain VAS, and patient global VAS inputs.

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/pas_ii
- 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/pas-ii-calculator-wolfe-2005-patient-activity-scale-ii-60d3b54d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nTrUSJOFfkdUomGghch1g

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 pas-ii-calculator-wolfe-2005-patient-activity-scale-ii-60d3b54d
```

Example prompt: Calculate the PAS-II score for my RA patient who has a HAQ-II of 1.5, a pain VAS of 6, and a patient global VAS of 7.

## When to prefer this

Use this endpoint when you need to compute the specific Wolfe 2005 PAS-II formula for rheumatoid arthritis disease activity monitoring and already have HAQ-II, pain VAS, and patient global VAS values from a clinical assessment. Do not use if you need PAS-RA, pediatric appendicitis PAS (Samuel 2002), DAS28, or CDAI — those are different instruments.

## Known failure modes

- Missing required parameter (haq_ii, pain_vas, or patient_global_vas) returns an error
- HAQ-II value outside 0-3 range may produce out-of-range or rejected output
- pain_vas or patient_global_vas outside 0-10 range may produce invalid results
- Non-numeric inputs cause request failure
- Payment failure (x402) if USDC balance is insufficient

## How this service works

Wolfe 2005 Patient Activity Scale II (PAS-II): (haq_ii * 3.33 + pain_vas + patient_global_vas) / 3. HAQ-II 0-3 (not HAQ); pain and patient global 0-10 VAS. magent does not administer HAQ-II. Not PAS-RA, Samuel 2002 pediatric appendicitis PAS, DAS28, or CDAI. Not a diagnosis. PAS-II total only; no remission or severity cutoffs.

## Output

A numeric PAS-II total score derived from the formula (haq_ii * 3.33 + pain_vas + patient_global_vas) / 3. No remission or severity cutoffs are applied — the raw composite value is returned.

## 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": [
      "haq_ii",
      "pain_vas",
      "patient_global_vas"
     ],
     "properties": {
      "haq_ii": {
       "type": "number",
       "description": "Caller-assigned HAQ-II disability index (Wolfe 2005 PAS-II). Number 0-3. Not HAQ. magent does not administer HAQ-II."
      },
      "pain_vas": {
       "type": "number",
       "description": "Caller-assigned pain visual analog scale (Wolfe 2005 PAS-II). Number 0-10. magent does not examine the patient."
      },
      "patient_global_vas": {
       "type": "number",
       "description": "Caller-assigned patient global visual analog scale (Wolfe 2005 PAS-II). Number 0-10. magent does not examine the patient."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pas-ii-calculator-wolfe-2005-patient-activity-scale-ii-60d3b54d/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)