Emergency · LIVE

Patient Activity Scale (PAS) for RA

PAS-RA

Compute the Wolfe 2005 Patient Activity Scale (PAS) from a caller-assigned HAQ disability index (0-3), pain VAS (0-10), and patient global VAS (0-10). Uses HAQ × 3.33, not HAQ-II. Returns the PAS total only.

LIVE $0.005 USDC GET /api/calc/pas_ra

Markdown: /docs/pas-ra.md · Canonical: https://magentlab.com/docs/pas-ra

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

What it computes

Compute the Wolfe 2005 Patient Activity Scale (PAS) from a caller-assigned HAQ disability index (0-3), pain VAS (0-10), and patient global VAS (0-10). Uses HAQ × 3.33, not HAQ-II. Returns the PAS total only.

When to use

When an agent already has a caller-assigned HAQ (0-3, not HAQ-II), pain VAS, and patient global VAS and needs the published Wolfe 2005 PAS composite, not PAS-II, not DAS28, not CDAI, and not Samuel 2002 pediatric appendicitis PAS.

When not to use

• Not a medical device and not a rheumatoid arthritis diagnosis or a treatment order.
• magent does not administer the HAQ. haq, pain_vas, and patient_global_vas are caller-assigned. This tool uses HAQ 0-3, not HAQ-II.
• This is Wolfe 2005 PAS (HAQ × 3.33), not PAS-II (HAQ-II). Not Samuel 2002 pediatric appendicitis PAS. Not DAS28. Not CDAI.
• Wolfe 2005 does not lock remission, minimal, moderate, or severe cutoffs in this tool. magent returns the PAS total only.

Formula

PAS = (haq * 3.33 + pain_vas + patient_global_vas) / 3; Wolfe 2005 Patient Activity Scale (not PAS-II); HAQ 0-3 (not HAQ-II); pain and patient global 0-10 VAS; magent does not administer the HAQ; not Samuel 2002 pediatric appendicitis PAS; not DAS28; not CDAI; not a diagnosis; no published remission/minimal/moderate/severe cutoffs

Citation

Title

A composite disease activity scale for clinical practice, observational studies, and clinical trials: the patient activity scale (PAS/PAS-II)

Authors

Wolfe F, Michaud K, Pincus T

Source

J Rheumatol. 2005;32(12):2410-2415

DOI

none

Worked example

Also searched as

• Patient Activity Scale
• PAS RA
• Wolfe PAS
• HAQ pain patient global
• rheumatoid arthritis PAS
• PAS not PAS-II
• Wolfe 2005 PAS

Try

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

/api/calc/pas_ra?haq=0&pain_vas=0&patient_global_vas=0

Full URL: https://api.magentlab.com/api/calc/pas_ra?haq=0&pain_vas=0&patient_global_vas=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/pas_ra?haq=0&pain_vas=0&patient_global_vas=0"

Parameters

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/pas_ra 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": [
    {
      "haq": "0",
      "pain_vas": "0",
      "patient_global_vas": "0"
    },
    {
      "haq": "0",
      "pain_vas": "0",
      "patient_global_vas": "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/pas_ra",
  "items": [
    {
      "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": "Wolfe F, Michaud K, Pincus T",
        "id": "wolfe-2005",
        "pmid": "16331773",
        "source": "J Rheumatol. 2005;32(12):2410-2415",
        "title": "A composite disease activity scale for clinical practice, observational studies, and clinical trials: the patient activity scale (PAS/PAS-II)"
      },
      "formula": "pas_ra",
      "formula_expression": "PAS = (haq * 3.33 + pain_vas + patient_global_vas) / 3; Wolfe 2005 Patient Activity Scale (not PAS-II); HAQ 0-3 (not HAQ-II); pain and patient global 0-10 VAS; magent does not administer the HAQ; not Samuel 2002 pediatric appendicitis PAS; not DAS28; not CDAI; not a diagnosis; no published remission/minimal/moderate/severe cutoffs",
      "haq": 0.0,
      "pain_vas": 0.0,
      "pas": 0.0,
      "patient_global_vas": 0.0
    },
    {
      "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": "Wolfe F, Michaud K, Pincus T",
        "id": "wolfe-2005",
        "pmid": "16331773",
        "source": "J Rheumatol. 2005;32(12):2410-2415",
        "title": "A composite disease activity scale for clinical practice, observational studies, and clinical trials: the patient activity scale (PAS/PAS-II)"
      },
      "formula": "pas_ra",
      "formula_expression": "PAS = (haq * 3.33 + pain_vas + patient_global_vas) / 3; Wolfe 2005 Patient Activity Scale (not PAS-II); HAQ 0-3 (not HAQ-II); pain and patient global 0-10 VAS; magent does not administer the HAQ; not Samuel 2002 pediatric appendicitis PAS; not DAS28; not CDAI; not a diagnosis; no published remission/minimal/moderate/severe cutoffs",
      "haq": 0.0,
      "pain_vas": 0.0,
      "pas": 0.0,
      "patient_global_vas": 0.0
    }
  ]
}

Response

Example JSON

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

{
  "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": "Wolfe F, Michaud K, Pincus T",
    "id": "wolfe-2005",
    "pmid": "16331773",
    "source": "J Rheumatol. 2005;32(12):2410-2415",
    "title": "A composite disease activity scale for clinical practice, observational studies, and clinical trials: the patient activity scale (PAS/PAS-II)"
  },
  "formula": "pas_ra",
  "formula_expression": "PAS = (haq * 3.33 + pain_vas + patient_global_vas) / 3; Wolfe 2005 Patient Activity Scale (not PAS-II); HAQ 0-3 (not HAQ-II); pain and patient global 0-10 VAS; magent does not administer the HAQ; not Samuel 2002 pediatric appendicitis PAS; not DAS28; not CDAI; not a diagnosis; no published remission/minimal/moderate/severe cutoffs",
  "haq": 0.0,
  "pain_vas": 0.0,
  "pas": 0.0,
  "patient_global_vas": 0.0
}

Client errors (HTTP 400)

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

Related tools

• DAS28-ESR — Compute the Prevoo 1995 28-joint DAS with ESR from caller-assigned tender and swollen 28-joint counts, ESR in mm/h, and patient general health on a 0-100 mm VAS. Returns the published score only.
• CDAI-RA — Sum caller-assigned 28-joint swollen and tender counts and 0–10 cm patient and evaluator globals and return the Aletaha 2005 Clinical Disease Activity Index. Does not add CRP and does not return activity-state cutoffs.

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.