# Neuropathic Pain Scale (Galer)

Neuropathic Pain Scale (Galer)

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

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

## What it computes

Sum ten caller-assigned Galer 1997 NPS integers (0-10) printed as Intense, Sharp, Hot, Dull, Cold, Sensitive, Itchy, Unpleasant, Deep, and Surface, and return that total (max 100).

## When to use

When an agent already has Galer 1997 0-10 integers for those ten printed qualities and needs their sum, not a neuropathy diagnosis, interview, or later composite cutoff.

## When not to use

- Not a medical device and not a diagnosis of neuropathy or a treatment order.
- Each of the ten items is a caller-assigned integer 0-10 from Galer 1997 Table 1 (Intense, Sharp, Hot, Dull, Cold, Sensitive, Itchy, Unpleasant, Deep, Surface). magent does not interview the patient.
- Galer 1997 printed item-level 0-10 scores and did not print a diagnostic cutoff for a summed total. magent returns the sum of those ten items (max 100) without a neuropathy-yes/no threshold and does not apply later NPS4, NPS6, NPS8, or NPS10 composites.
- The categorical time-quality item on that instrument is not a 0-10 score and is not an input.

## Formula

```
NPS = intensity + sharpness + heat + dullness + cold + sensitive + itchy + unpleasantness + deep_pain + surface_pain; each caller-assigned 0-10; max 100; Galer 1997 Table 1 Intense, Sharp, Hot, Dull, Cold, Sensitive, Itchy, Unpleasant, Deep, Surface; no total-score cutoff
```

## Citation

[Development and preliminary validation of a pain measure specific to neuropathic pain: the Neuropathic Pain Scale](https://doi.org/10.1212/WNL.48.2.332)
Galer BS, Jensen MP
Neurology. 1997;48:332-338
DOI: [10.1212/WNL.48.2.332](https://doi.org/10.1212/WNL.48.2.332)

## Worked example

### All items 0

Given: `cold=0, deep_pain=0, dullness=0, heat=0, intensity=0, itchy=0, sensitive=0, sharpness=0, surface_pain=0, unpleasantness=0`

1. intensity, sharpness, heat, dullness, cold, sensitive, itchy, unpleasantness, deep_pain, and surface_pain are 0 as assigned by the caller
2. Score = 0 (max 100). Galer 1997 published no total-score diagnostic cutoff.


### Mixed printed items

Given: `cold=0, deep_pain=6, dullness=1, heat=2, intensity=4, itchy=0, sensitive=0, sharpness=3, surface_pain=2, unpleasantness=5`

1. intensity 4 + sharpness 3 + heat 2 + dullness 1 + cold 0 + sensitive 0 + itchy 0 + unpleasantness 5 + deep_pain 6 + surface_pain 2
2. Score = 23 (max 100). No total-score diagnostic cutoff.


## Also searched as

- Neuropathic Pain Scale
- Galer NPS
- Galer Jensen NPS
- NPS Galer 1997
- neuropathic pain qualities
- Neuropathic Pain Scale Galer

## Parameters

- `intensity` (integer, required): Caller-assigned Galer 1997 NPS intensity (integer 0-10; Table 1 Intense). magent does not interview the patient.
- `sharpness` (integer, required): Caller-assigned Galer 1997 NPS sharpness (integer 0-10; Table 1 Sharp). magent does not interview the patient.
- `heat` (integer, required): Caller-assigned Galer 1997 NPS heat (integer 0-10; Table 1 Hot). magent does not interview the patient.
- `dullness` (integer, required): Caller-assigned Galer 1997 NPS dullness (integer 0-10; Table 1 Dull). magent does not interview the patient.
- `cold` (integer, required): Caller-assigned Galer 1997 NPS cold (integer 0-10; Table 1 Cold). magent does not interview the patient.
- `sensitive` (integer, required): Caller-assigned Galer 1997 NPS sensitive (integer 0-10; Table 1 Sensitive). magent does not interview the patient.
- `itchy` (integer, required): Caller-assigned Galer 1997 NPS itchy (integer 0-10; Table 1 Itchy). magent does not interview the patient.
- `unpleasantness` (integer, required): Caller-assigned Galer 1997 NPS overall unpleasantness (integer 0-10; Table 1 Unpleasant). magent does not interview the patient.
- `deep_pain` (integer, required): Caller-assigned Galer 1997 NPS intensity of deep pain (integer 0-10; Table 1 Deep). magent does not interview the patient.
- `surface_pain` (integer, required): Caller-assigned Galer 1997 NPS intensity of surface pain (integer 0-10; Table 1 Surface). magent does not interview 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/nps`
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": [
    {
      "cold": "0",
      "deep_pain": "0",
      "dullness": "0",
      "heat": "0",
      "intensity": "0",
      "itchy": "0",
      "sensitive": "0",
      "sharpness": "0",
      "surface_pain": "0",
      "unpleasantness": "0"
    },
    {
      "cold": "0",
      "deep_pain": "0",
      "dullness": "0",
      "heat": "0",
      "intensity": "0",
      "itchy": "0",
      "sensitive": "0",
      "sharpness": "0",
      "surface_pain": "0",
      "unpleasantness": "0"
    }
  ]
}
```

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

Example 200:

```json
{
  "count": 2,
  "path": "/api/calc/nps",
  "items": [
    {
      "components": [
        {
          "value": 0,
          "factor": "intensity",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "sharpness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "heat",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "dullness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "cold",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "sensitive",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "itchy",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "unpleasantness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "deep_pain",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "surface_pain",
          "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": "Galer BS, Jensen MP",
        "doi": "10.1212/WNL.48.2.332",
        "id": "galer-1997-nps",
        "pmid": "9040716",
        "source": "Neurology. 1997;48:332-338",
        "title": "Development and preliminary validation of a pain measure specific to neuropathic pain: the Neuropathic Pain Scale"
      },
      "formula": "nps",
      "formula_expression": "NPS = intensity + sharpness + heat + dullness + cold + sensitive + itchy + unpleasantness + deep_pain + surface_pain; each caller-assigned 0-10; max 100; Galer 1997 Table 1 Intense, Sharp, Hot, Dull, Cold, Sensitive, Itchy, Unpleasant, Deep, Surface; no total-score cutoff",
      "max_score": 100,
      "score": 0
    },
    {
      "components": [
        {
          "value": 0,
          "factor": "intensity",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "sharpness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "heat",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "dullness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "cold",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "sensitive",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "itchy",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "unpleasantness",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "deep_pain",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "surface_pain",
          "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": "Galer BS, Jensen MP",
        "doi": "10.1212/WNL.48.2.332",
        "id": "galer-1997-nps",
        "pmid": "9040716",
        "source": "Neurology. 1997;48:332-338",
        "title": "Development and preliminary validation of a pain measure specific to neuropathic pain: the Neuropathic Pain Scale"
      },
      "formula": "nps",
      "formula_expression": "NPS = intensity + sharpness + heat + dullness + cold + sensitive + itchy + unpleasantness + deep_pain + surface_pain; each caller-assigned 0-10; max 100; Galer 1997 Table 1 Intense, Sharp, Hot, Dull, Cold, Sensitive, Itchy, Unpleasant, Deep, Surface; no total-score cutoff",
      "max_score": 100,
      "score": 0
    }
  ]
}
```

## Response fields

- `formula` (string): nps
- `formula_expression` (string): Exact expression used
- `score` (integer): Sum of ten Galer 1997 NPS caller-assigned 0-10 items (0-100)
- `max_score` (integer): Always 100
- `components` (array): Per-item caller-assigned points
- `citation` (object): Galer and Jensen Neurology 1997 citation
- `disclaimer` (string): Not-a-device notice

## Example JSON

Frozen fixture. Not a live lookup.

```json
{
  "components": [
    {
      "value": 0,
      "factor": "intensity",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "sharpness",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "heat",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "dullness",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "cold",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "sensitive",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "itchy",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "unpleasantness",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "deep_pain",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "surface_pain",
      "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": "Galer BS, Jensen MP",
    "doi": "10.1212/WNL.48.2.332",
    "id": "galer-1997-nps",
    "pmid": "9040716",
    "source": "Neurology. 1997;48:332-338",
    "title": "Development and preliminary validation of a pain measure specific to neuropathic pain: the Neuropathic Pain Scale"
  },
  "formula": "nps",
  "formula_expression": "NPS = intensity + sharpness + heat + dullness + cold + sensitive + itchy + unpleasantness + deep_pain + surface_pain; each caller-assigned 0-10; max 100; Galer 1997 Table 1 Intense, Sharp, Hot, Dull, Cold, Sensitive, Itchy, Unpleasant, Deep, Surface; no total-score cutoff",
  "max_score": 100,
  "score": 0
}
```

## Errors

- HTTP 400 `invalid_nps`: Neuropathic Pain Scale inputs must match the published 0-10 item scores. 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

- [PAINAD](https://magentlab.com/docs/painad) — Sum five caller-assigned Warden 2003 PAINAD 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.
