CPOT (Gélinas)

CPOT

Sum four caller-assigned Gélinas 2006 CPOT integers (0-2) and return the published total (max 8). The fourth item is ventilator_compliance when intubated or vocalization when extubated.

LIVE $0.005 USDC GET /api/calc/cpot

Markdown: /docs/cpot.md · Canonical: https://magentlab.com/docs/cpot

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

What it computes

Sum four caller-assigned Gélinas 2006 CPOT integers (0-2) and return the published total (max 8). The fourth item is ventilator_compliance when intubated or vocalization when extubated.

When to use

When an agent has already assigned Gélinas 2006 0-2 integers for facial expression, body movements, muscle tension, and either ventilator compliance (intubated) or vocalization (extubated) and needs the published total, not a pain diagnosis, analgesic order, or later intensity cutoff.

When not to use

Not a medical device and not a pain diagnosis or analgesic order.
Each item is a caller-assigned integer 0, 1, or 2 from Gélinas 2006. magent does not observe the patient.
Not PAINAD. Total is 0-8. Gélinas 2006 validates the 0-8 tool; magent does not add later intensity cutoffs.
When intubated=true provide ventilator_compliance and omit vocalization; when intubated=false provide vocalization and omit ventilator_compliance.

Formula

CPOT = facial_expression + body_movements + muscle_tension + ventilator_compliance (intubated) or vocalization (extubated); each caller-assigned 0-2; max 8

Citation

Title: Validation of the Critical-Care Pain Observation Tool in Adult Patients
Authors: Gélinas C, Fillion L, Puntillo KA, Viens C, Fortier M
Source: Am J Crit Care. 2006;15(4):420-427
DOI: 10.4037/ajcc2006.15.4.420

Worked example

All items 0 (extubated)

Given: body_movements=0facial_expression=0intubated=falsemuscle_tension=0vocalization=0

facial_expression 0 + body_movements 0 + muscle_tension 0 + vocalization 0 (intubated=false)
Score = 0 (max 8)

All items 2 (intubated)

Given: body_movements=2facial_expression=2intubated=truemuscle_tension=2ventilator_compliance=2

facial_expression 2 + body_movements 2 + muscle_tension 2 + ventilator_compliance 2 (intubated=true)
Score = 8 (max 8)

Also searched as

CPOT
Critical-Care Pain Observation Tool
Gélinas CPOT
critical care pain observation
ICU pain score
Gélinas 2006 CPOT

Try

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

/api/calc/cpot?facial_expression=0&body_movements=0&muscle_tension=0&intubated=false&vocalization=0

Full URL: https://api.magentlab.com/api/calc/cpot?facial_expression=0&body_movements=0&muscle_tension=0&intubated=false&vocalization=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/cpot?facial_expression=0&body_movements=0&muscle_tension=0&intubated=false&vocalization=0"

Parameters

Name	Type	Required	Description
`facial_expression`	integer	required	Caller-assigned Gélinas 2006 CPOT facial expression (integer 0-2): 0 relaxed, no muscle tension; 1 tense (brow lowering, orbit tightening, levator contraction); 2 grimacing. magent does not observe the patient.
`body_movements`	integer	required	Caller-assigned Gélinas 2006 CPOT body movements (integer 0-2): 0 absence of movements or normal position; 1 protection; 2 restlessness. magent does not observe the patient.
`muscle_tension`	integer	required	Caller-assigned Gélinas 2006 CPOT muscle tension on passive flexion/extension of upper limbs (integer 0-2): 0 relaxed; 1 tense/rigid; 2 very tense or rigid. magent does not observe the patient.
`intubated`	boolean	required	true when intubated: provide ventilator_compliance and omit vocalization. false when extubated: provide vocalization and omit ventilator_compliance. magent does not observe the patient.
`vocalization`	integer	optional	Caller-assigned Gélinas 2006 CPOT vocalization when intubated=false (integer 0-2): 0 talking in normal tone or no sound; 1 sighing, moaning; 2 crying out, sobbing. Omit when intubated=true. magent does not observe the patient.
`ventilator_compliance`	integer	optional	Caller-assigned Gélinas 2006 CPOT ventilator compliance when intubated=true (integer 0-2): 0 tolerating ventilator or movement; 1 coughing but still tolerating; 2 fighting ventilator. Omit when intubated=false. 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.

POST /api/calc/cpot 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": [
    {
      "body_movements": "0",
      "facial_expression": "0",
      "intubated": "false",
      "muscle_tension": "0",
      "vocalization": "0"
    },
    {
      "body_movements": "0",
      "facial_expression": "0",
      "intubated": "false",
      "muscle_tension": "0",
      "vocalization": "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/cpot",
  "items": [
    {
      "components": [
        {
          "value": 0,
          "factor": "facial_expression",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "body_movements",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "muscle_tension",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "vocalization",
          "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": "Gélinas C, Fillion L, Puntillo KA, Viens C, Fortier M",
        "doi": "10.4037/ajcc2006.15.4.420",
        "id": "gelinas-2006",
        "pmid": "16823021",
        "source": "Am J Crit Care. 2006;15(4):420-427",
        "title": "Validation of the Critical-Care Pain Observation Tool in Adult Patients"
      },
      "formula": "cpot",
      "formula_expression": "CPOT = facial_expression + body_movements + muscle_tension + ventilator_compliance (intubated) or vocalization (extubated); each caller-assigned 0-2; max 8",
      "max_score": 8,
      "score": 0,
      "facial_expression": 0,
      "body_movements": 0,
      "intubated": false,
      "muscle_tension": 0,
      "vocalization": 0
    },
    {
      "components": [
        {
          "value": 0,
          "factor": "facial_expression",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "body_movements",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "muscle_tension",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "vocalization",
          "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": "Gélinas C, Fillion L, Puntillo KA, Viens C, Fortier M",
        "doi": "10.4037/ajcc2006.15.4.420",
        "id": "gelinas-2006",
        "pmid": "16823021",
        "source": "Am J Crit Care. 2006;15(4):420-427",
        "title": "Validation of the Critical-Care Pain Observation Tool in Adult Patients"
      },
      "formula": "cpot",
      "formula_expression": "CPOT = facial_expression + body_movements + muscle_tension + ventilator_compliance (intubated) or vocalization (extubated); each caller-assigned 0-2; max 8",
      "max_score": 8,
      "score": 0,
      "facial_expression": 0,
      "body_movements": 0,
      "intubated": false,
      "muscle_tension": 0,
      "vocalization": 0
    }
  ]
}

Response

Field	Type	Description
`formula`	string	cpot
`formula_expression`	string	Exact expression used
`score`	integer	CPOT points 0-8
`max_score`	integer	Always 8
`intubated`	boolean	true when the ventilator_compliance item was used
`facial_expression`	integer	Caller-assigned facial expression 0-2
`body_movements`	integer	Caller-assigned body movements 0-2
`muscle_tension`	integer	Caller-assigned muscle tension 0-2
`vocalization`	integer	Caller-assigned vocalization 0-2 when intubated is false; omitted when intubated
`ventilator_compliance`	integer	Caller-assigned ventilator compliance 0-2 when intubated is true; omitted when extubated
`components`	array	Per-item caller-assigned points
`citation`	object	Gélinas et al. Am J Crit Care 2006 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": 0,
      "factor": "facial_expression",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "body_movements",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "muscle_tension",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "vocalization",
      "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": "Gélinas C, Fillion L, Puntillo KA, Viens C, Fortier M",
    "doi": "10.4037/ajcc2006.15.4.420",
    "id": "gelinas-2006",
    "pmid": "16823021",
    "source": "Am J Crit Care. 2006;15(4):420-427",
    "title": "Validation of the Critical-Care Pain Observation Tool in Adult Patients"
  },
  "formula": "cpot",
  "formula_expression": "CPOT = facial_expression + body_movements + muscle_tension + ventilator_compliance (intubated) or vocalization (extubated); each caller-assigned 0-2; max 8",
  "max_score": 8,
  "score": 0,
  "facial_expression": 0,
  "body_movements": 0,
  "intubated": false,
  "muscle_tension": 0,
  "vocalization": 0
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_cpot`	facial_expression, body_movements, muscle_tension, and ventilator_compliance or vocalization must each be 0, 1, or 2 (Gélinas 2006). Returned before settlement; you are not charged.
400	`invalid_cpot_airway`	when intubated=true provide ventilator_compliance and omit vocalization; when intubated=false provide vocalization and omit ventilator_compliance (Gélinas 2006). Returned before settlement; you are not charged.
400	`invalid_flag`	boolean clinical flags must be true or false Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

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. 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.