Neurology · LIVE

Barthel Index (Mahoney)

Barthel Index

Sum ten caller-assigned Mahoney 1965 Barthel Index item points and return the published 0-100 total.

LIVE $0.005 USDC GET /api/calc/barthel

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

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

What it computes

Sum ten caller-assigned Mahoney 1965 Barthel Index item points and return the published 0-100 total.

When to use

When an agent has already assigned published Mahoney 1965 points for the ten Barthel activities and needs the 0-100 total. magent does not observe the patient or assign disability or placement.

When not to use

Not a medical device and not a disability rating or placement decision.
Each of the ten items is a caller-assigned published point value from Mahoney 1965. magent does not observe the patient.
Original Mahoney/Barthel 1965 10-item index, 0-100 in fives. Not the Collin 0-20 Barthel. Score only; magent does not emit dependency bands.

Formula

Barthel Index = feeding + bathing + grooming + dressing + bowels + bladder + toilet + transfers + mobility + stairs; Mahoney 1965 caller-assigned points; 0-100 in fives; max 100

Citation

Title: Functional evaluation: the Barthel Index
Authors: Mahoney FI, Barthel DW
Source: Md State Med J. 1965;14:61-65
DOI: none

Worked example

All items 0

Given: bathing=0bladder=0bowels=0dressing=0feeding=0grooming=0mobility=0stairs=0toilet=0transfers=0

feeding 0 + bathing 0 + grooming 0 + dressing 0 + bowels 0 + bladder 0 + toilet 0 + transfers 0 + mobility 0 + stairs 0
Score = 0 (max 100)

All independent

Given: bathing=5bladder=10bowels=10dressing=10feeding=10grooming=5mobility=15stairs=10toilet=10transfers=15

feeding 10 + bathing 5 + grooming 5 + dressing 10 + bowels 10 + bladder 10 + toilet 10 + transfers 15 + mobility 15 + stairs 10
Score = 100 (max 100)

Also searched as

Barthel Index
Barthel score
Mahoney Barthel
Barthel ADL
Barthel 1965
10-item Barthel Index
Barthel Index 0-100

Try

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

/api/calc/barthel?feeding=0&bathing=0&grooming=0&dressing=0&bowels=0&bladder=0&toilet=0&transfers=0&mobility=0&stairs=0

Full URL: https://api.magentlab.com/api/calc/barthel?feeding=0&bathing=0&grooming=0&dressing=0&bowels=0&bladder=0&toilet=0&transfers=0&mobility=0&stairs=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/barthel?feeding=0&bathing=0&grooming=0&dressing=0&bowels=0&bladder=0&toilet=0&transfers=0&mobility=0&stairs=0"

Parameters

Name	Type	Required	Description
`feeding`	integer	required	Caller-assigned Mahoney 1965 Barthel feeding points (integer 0, 5, or 10): 0 unable; 5 needs help; 10 independent. magent does not observe the patient.
`bathing`	integer	required	Caller-assigned Mahoney 1965 Barthel bathing points (integer 0 or 5): 0 dependent; 5 independent. magent does not observe the patient.
`grooming`	integer	required	Caller-assigned Mahoney 1965 Barthel grooming points (integer 0 or 5): 0 needs help; 5 independent. magent does not observe the patient.
`dressing`	integer	required	Caller-assigned Mahoney 1965 Barthel dressing points (integer 0, 5, or 10): 0 dependent; 5 needs help; 10 independent. magent does not observe the patient.
`bowels`	integer	required	Caller-assigned Mahoney 1965 Barthel bowels points (integer 0, 5, or 10): 0 incontinent; 5 occasional accident; 10 continent. magent does not observe the patient.
`bladder`	integer	required	Caller-assigned Mahoney 1965 Barthel bladder points (integer 0, 5, or 10): 0 incontinent or catheterized; 5 occasional accident; 10 continent. magent does not observe the patient.
`toilet`	integer	required	Caller-assigned Mahoney 1965 Barthel toilet points (integer 0, 5, or 10): 0 dependent; 5 needs help; 10 independent. magent does not observe the patient.
`transfers`	integer	required	Caller-assigned Mahoney 1965 Barthel transfers points (integer 0, 5, 10, or 15): 0 unable; 5 major help; 10 minor help; 15 independent. magent does not observe the patient.
`mobility`	integer	required	Caller-assigned Mahoney 1965 Barthel mobility points (integer 0, 5, 10, or 15): 0 immobile; 5 wheelchair independent; 10 walks with help; 15 independent. magent does not observe the patient.
`stairs`	integer	required	Caller-assigned Mahoney 1965 Barthel stairs points (integer 0, 5, or 10): 0 unable; 5 needs help; 10 independent. 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/barthel 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": [
    {
      "bathing": "0",
      "bladder": "0",
      "bowels": "0",
      "dressing": "0",
      "feeding": "0",
      "grooming": "0",
      "mobility": "0",
      "stairs": "0",
      "toilet": "0",
      "transfers": "0"
    },
    {
      "bathing": "0",
      "bladder": "0",
      "bowels": "0",
      "dressing": "0",
      "feeding": "0",
      "grooming": "0",
      "mobility": "0",
      "stairs": "0",
      "toilet": "0",
      "transfers": "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/barthel",
  "items": [
    {
      "components": [
        {
          "value": 0,
          "factor": "feeding",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "bathing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "grooming",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "dressing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "bowels",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "bladder",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "toilet",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "transfers",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "mobility",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "stairs",
          "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": "Mahoney FI, Barthel DW",
        "id": "mahoney-1965",
        "pmid": "14258950",
        "source": "Md State Med J. 1965;14:61-65",
        "title": "Functional evaluation: the Barthel Index"
      },
      "formula": "barthel",
      "formula_expression": "Barthel Index = feeding + bathing + grooming + dressing + bowels + bladder + toilet + transfers + mobility + stairs; Mahoney 1965 caller-assigned points; 0-100 in fives; max 100",
      "max_score": 100,
      "score": 0
    },
    {
      "components": [
        {
          "value": 0,
          "factor": "feeding",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "bathing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "grooming",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "dressing",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "bowels",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "bladder",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "toilet",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "transfers",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "mobility",
          "points": 0,
          "present": true
        },
        {
          "value": 0,
          "factor": "stairs",
          "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": "Mahoney FI, Barthel DW",
        "id": "mahoney-1965",
        "pmid": "14258950",
        "source": "Md State Med J. 1965;14:61-65",
        "title": "Functional evaluation: the Barthel Index"
      },
      "formula": "barthel",
      "formula_expression": "Barthel Index = feeding + bathing + grooming + dressing + bowels + bladder + toilet + transfers + mobility + stairs; Mahoney 1965 caller-assigned points; 0-100 in fives; max 100",
      "max_score": 100,
      "score": 0
    }
  ]
}

Response

Field	Type	Description
`formula`	string	barthel
`formula_expression`	string	Exact expression used
`score`	integer	Barthel Index points 0-100 in fives
`max_score`	integer	Always 100
`components`	array	Per-item caller-assigned points
`citation`	object	Mahoney and Barthel Md State Med J 1965 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": "feeding",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "bathing",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "grooming",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "dressing",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "bowels",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "bladder",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "toilet",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "transfers",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "mobility",
      "points": 0,
      "present": true
    },
    {
      "value": 0,
      "factor": "stairs",
      "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": "Mahoney FI, Barthel DW",
    "id": "mahoney-1965",
    "pmid": "14258950",
    "source": "Md State Med J. 1965;14:61-65",
    "title": "Functional evaluation: the Barthel Index"
  },
  "formula": "barthel",
  "formula_expression": "Barthel Index = feeding + bathing + grooming + dressing + bowels + bladder + toilet + transfers + mobility + stairs; Mahoney 1965 caller-assigned points; 0-100 in fives; max 100",
  "max_score": 100,
  "score": 0
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_barthel`	each Barthel 1965 item must be a published point value for that activity (0/5, 0/5/10, or 0/5/10/15). 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

Modified Rankin — Return the van Swieten 1988 modified Rankin handicap grade 0-5 from a caller-assigned integer, with the published grade wording.

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.