# NVPS (Odhner)

NVPS

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

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

## What it computes

Sum five caller-assigned Odhner 2003 original NVPS integers (0-2) and return the published total (max 10).

## When to use

When an agent has already assigned Odhner 2003 original 0-2 integers for face, activity, guarding, physiologic I (vital signs), and physiologic II (autonomic) and needs the published total, not a pain diagnosis, analgesic order, later NVPS-R respiratory category, or invented intensity cutoff.

## When not to use

- Not a medical device and not a pain diagnosis or analgesic order.
- Each of the five items is a caller-assigned integer 0, 1, or 2 from Odhner 2003. magent does not observe the patient.
- Original Odhner 2003 NVPS only. Not the later NVPS-R that replaces physiologic II with a respiratory category.
- Total is 0-10. magent does not add mild, moderate, or severe intensity cutoffs that are not in Odhner 2003.
- Not BPS. Not FLACC.

## Formula

```
NVPS = face + activity + guarding + physiologic_i + physiologic_ii; each caller-assigned 0-2; max 10
```

## Citation

[Assessing pain control in nonverbal critically ill adults](https://doi.org/10.1097/00003465-200311000-00010)
Odhner M, Wegman D, Freeland N, Steinmetz A, Ingersoll GL
Dimens Crit Care Nurs. 2003;22(6):260-267
DOI: [10.1097/00003465-200311000-00010](https://doi.org/10.1097/00003465-200311000-00010)

## Worked example

### All items 0

Given: `activity=0, face=0, guarding=0, physiologic_i=0, physiologic_ii=0`

1. face 0 + activity 0 + guarding 0 + physiologic_i 0 + physiologic_ii 0
2. Score = 0 (max 10)


### All items 2

Given: `activity=2, face=2, guarding=2, physiologic_i=2, physiologic_ii=2`

1. face 2 + activity 2 + guarding 2 + physiologic_i 2 + physiologic_ii 2
2. Score = 10 (max 10)


## Also searched as

- NVPS
- Nonverbal Pain Scale
- Odhner NVPS
- original NVPS
- Adult Nonverbal Pain Scale
- nonverbal critically ill adults pain
- Odhner 2003 NVPS
- NVPS original not NVPS-R

## Parameters

- `face` (integer, required): Caller-assigned Odhner 2003 original NVPS face (integer 0-2): 0 no particular expression or smile; 1 occasional grimace, tearing, frowning, wrinkled forehead; 2 frequent grimace, tearing, frowning, wrinkled forehead. magent does not observe the patient.
- `activity` (integer, required): Caller-assigned Odhner 2003 original NVPS activity/movement (integer 0-2): 0 lying quietly, normal position; 1 seeking attention through movement or slow, cautious movement; 2 restless, excessive activity and/or withdrawal reflexes. magent does not observe the patient.
- `guarding` (integer, required): Caller-assigned Odhner 2003 original NVPS guarding (integer 0-2): 0 lying quietly, no positioning of hands over areas of the body; 1 splinting areas of the body, tense; 2 rigid, stiff. magent does not observe the patient.
- `physiologic_i` (integer, required): Caller-assigned Odhner 2003 original NVPS physiologic I vital signs (integer 0-2): 0 stable vital signs (no change in past 4 h vs baseline BP/HR/RR); 1 change over past 4 h in SBP >20 mmHg or HR >20/min or RR >10/min; 2 change over past 4 h in SBP >30 mmHg or HR >25/min or RR >20/min. magent does not observe the patient.
- `physiologic_ii` (integer, required): Caller-assigned Odhner 2003 original NVPS physiologic II autonomic (integer 0-2): 0 warm, dry skin; 1 dilated pupils, perspiring, flushing; 2 diaphoretic, pallor. Not the later NVPS-R respiratory category. 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/nvps`
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": [
    {
      "activity": "0",
      "face": "0",
      "guarding": "0",
      "physiologic_i": "0",
      "physiologic_ii": "0"
    },
    {
      "activity": "0",
      "face": "0",
      "guarding": "0",
      "physiologic_i": "0",
      "physiologic_ii": "0"
    }
  ]
}
```

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

Example 200:

```json
{
  "count": 2,
  "path": "/api/calc/nvps",
  "items": [
    {
      "components": [
        {
          "value": 0,
          "factor": "face",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "activity",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "guarding",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "physiologic_i",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "physiologic_ii",
          "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": "Odhner M, Wegman D, Freeland N, Steinmetz A, Ingersoll GL",
        "doi": "10.1097/00003465-200311000-00010",
        "id": "odhner-2003",
        "pmid": "14639117",
        "source": "Dimens Crit Care Nurs. 2003;22(6):260-267",
        "title": "Assessing pain control in nonverbal critically ill adults"
      },
      "formula": "nvps",
      "formula_expression": "NVPS = face + activity + guarding + physiologic_i + physiologic_ii; each caller-assigned 0-2; max 10",
      "max_score": 10,
      "score": 0,
      "activity": 0,
      "face": 0,
      "guarding": 0,
      "physiologic_i": 0,
      "physiologic_ii": 0
    },
    {
      "components": [
        {
          "value": 0,
          "factor": "face",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "activity",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "guarding",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "physiologic_i",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "physiologic_ii",
          "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": "Odhner M, Wegman D, Freeland N, Steinmetz A, Ingersoll GL",
        "doi": "10.1097/00003465-200311000-00010",
        "id": "odhner-2003",
        "pmid": "14639117",
        "source": "Dimens Crit Care Nurs. 2003;22(6):260-267",
        "title": "Assessing pain control in nonverbal critically ill adults"
      },
      "formula": "nvps",
      "formula_expression": "NVPS = face + activity + guarding + physiologic_i + physiologic_ii; each caller-assigned 0-2; max 10",
      "max_score": 10,
      "score": 0,
      "activity": 0,
      "face": 0,
      "guarding": 0,
      "physiologic_i": 0,
      "physiologic_ii": 0
    }
  ]
}
```

## Response fields

- `formula` (string): nvps
- `formula_expression` (string): Exact expression used
- `score` (integer): NVPS points 0-10
- `max_score` (integer): Always 10
- `face` (integer): Caller-assigned face points 0-2
- `activity` (integer): Caller-assigned activity points 0-2
- `guarding` (integer): Caller-assigned guarding points 0-2
- `physiologic_i` (integer): Caller-assigned physiologic I (vital signs) points 0-2
- `physiologic_ii` (integer): Caller-assigned physiologic II (autonomic) points 0-2
- `components` (array): Per-item caller-assigned points
- `citation` (object): Odhner et al. Dimens Crit Care Nurs 2003 citation
- `disclaimer` (string): Not-a-device notice

## Example JSON

Frozen fixture. Not a live lookup.

```json
{
  "components": [
    {
      "value": 0,
      "factor": "face",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "activity",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "guarding",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "physiologic_i",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "physiologic_ii",
      "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": "Odhner M, Wegman D, Freeland N, Steinmetz A, Ingersoll GL",
    "doi": "10.1097/00003465-200311000-00010",
    "id": "odhner-2003",
    "pmid": "14639117",
    "source": "Dimens Crit Care Nurs. 2003;22(6):260-267",
    "title": "Assessing pain control in nonverbal critically ill adults"
  },
  "formula": "nvps",
  "formula_expression": "NVPS = face + activity + guarding + physiologic_i + physiologic_ii; each caller-assigned 0-2; max 10",
  "max_score": 10,
  "score": 0,
  "activity": 0,
  "face": 0,
  "guarding": 0,
  "physiologic_i": 0,
  "physiologic_ii": 0
}
```

## Errors

- HTTP 400 `invalid_nvps`: NVPS inputs must be the five caller-assigned 0-2 Odhner 2003 original categories (face, activity, guarding, physiologic_i, physiologic_ii). 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

- [BPS](https://magentlab.com/docs/bps) — Sum three caller-assigned Payen 2001 BPS integers (1-4) and return the published total (range 3-12).
- [FLACC](https://magentlab.com/docs/flacc) — Sum five caller-assigned Merkel 1997 FLACC integers (0-2) and return the published total (max 10).

## 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.
