MAGENT

Emergency · LIVE

RibScore

Sum the six Chapman 2016 RibScore radiographic flags and return the integer total 0-6. That paper associated the score linearly with pneumonia, respiratory failure, and tracheostomy.

LIVE $0.005 USDC GET /api/calc/ribscore

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

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

What it computes

Sum the six Chapman 2016 RibScore radiographic flags and return the integer total 0-6. That paper associated the score linearly with pneumonia, respiratory failure, and tracheostomy.

When to use

When an agent already has caller-assigned Chapman 2016 radiographic flags and needs the published 0-6 total without inventing a CT read, named risk class, or unpublished outcome percents.

When not to use

  • Not a medical device.
  • Not a pneumonia, respiratory-failure, or tracheostomy prediction, diagnosis, or order.
  • magent does not read a CT. The caller assigns the six Chapman 2016 flags (six or more rib fractures, bilateral fractures, flail chest, three or more severely bicortical displaced fractures, first rib fracture, and at least one fracture in all three anatomic areas).
  • Chapman 2016 associated the integer total linearly with pneumonia, respiratory failure, and tracheostomy. magent does not invent named bands or unpublished outcome percents. The payload is the 0-6 score only.

Formula

RibScore = six_or_more_ribs + bilateral + flail_chest + three_or_more_displaced + first_rib + all_three_areas; each 1; Chapman 2016; max 6; caller-assigned radiographic flags; magent does not read a CT

Citation

Title
RibScore: A novel radiographic score based on fracture pattern that predicts pneumonia, respiratory failure, and tracheostomy
Authors
Chapman BC, Herbert B, Rodil M, et al
Source
J Trauma Acute Care Surg. 2016;80(1):95-101
DOI
10.1097/TA.0000000000000867

Worked example

All flags false

Given: all_three_areas=falsebilateral=falsefirst_rib=falseflail_chest=falsesix_or_more_ribs=falsethree_or_more_displaced=false

  1. six_or_more_ribs, bilateral, flail_chest, three_or_more_displaced, first_rib, and all_three_areas are false
  2. score = 0 (max 6)

All flags true

Given: all_three_areas=truebilateral=truefirst_rib=trueflail_chest=truesix_or_more_ribs=truethree_or_more_displaced=true

  1. All six Chapman 2016 flags true, 1 point each
  2. score = 6 (max 6)

Also searched as

  • RibScore
  • rib score
  • Chapman RibScore
  • radiographic rib score
  • rib fracture score
  • Chapman 2016 rib
  • flail chest rib score
  • bicortical displaced rib fractures

Try

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

/api/calc/ribscore?six_or_more_ribs=false&bilateral=false&flail_chest=false&three_or_more_displaced=false&first_rib=false&all_three_areas=false

Full URL: https://api.magentlab.com/api/calc/ribscore?six_or_more_ribs=false&bilateral=false&flail_chest=false&three_or_more_displaced=false&first_rib=false&all_three_areas=false

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/ribscore?six_or_more_ribs=false&bilateral=false&flail_chest=false&three_or_more_displaced=false&first_rib=false&all_three_areas=false"

Parameters

Name Type Required Description
six_or_more_ribs boolean required Six or more rib fractures as assigned by the caller (Chapman 2016). true or false. magent does not read a CT or count fractures.
bilateral boolean required Bilateral rib fractures as assigned by the caller (Chapman 2016). true or false. magent does not read a CT.
flail_chest boolean required Flail chest as assigned by the caller (Chapman 2016). true or false. magent does not read a CT or examine the chest wall.
three_or_more_displaced boolean required Three or more severely (bicortical) displaced rib fractures as assigned by the caller (Chapman 2016). true or false. magent does not read a CT or grade displacement.
first_rib boolean required First rib fracture as assigned by the caller (Chapman 2016). true or false. magent does not read a CT.
all_three_areas boolean required At least one fracture in all three anatomic areas (anterior, lateral, and posterior) as assigned by the caller (Chapman 2016). true or false. magent does not read a CT or assign anatomic zones.

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/ribscore 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": [
    {
      "all_three_areas": "false",
      "bilateral": "false",
      "first_rib": "false",
      "flail_chest": "false",
      "six_or_more_ribs": "false",
      "three_or_more_displaced": "false"
    },
    {
      "all_three_areas": "false",
      "bilateral": "false",
      "first_rib": "false",
      "flail_chest": "false",
      "six_or_more_ribs": "false",
      "three_or_more_displaced": "false"
    }
  ]
}

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/ribscore",
  "items": [
    {
      "components": [
        {
          "factor": "six_or_more_ribs",
          "points": 0,
          "present": false
        },
        {
          "factor": "bilateral",
          "points": 0,
          "present": false
        },
        {
          "factor": "flail_chest",
          "points": 0,
          "present": false
        },
        {
          "factor": "three_or_more_displaced",
          "points": 0,
          "present": false
        },
        {
          "factor": "first_rib",
          "points": 0,
          "present": false
        },
        {
          "factor": "all_three_areas",
          "points": 0,
          "present": false
        }
      ],
      "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": "Chapman BC, Herbert B, Rodil M, et al",
        "doi": "10.1097/TA.0000000000000867",
        "id": "chapman-2016",
        "pmid": "26683395",
        "source": "J Trauma Acute Care Surg. 2016;80(1):95-101",
        "title": "RibScore: A novel radiographic score based on fracture pattern that predicts pneumonia, respiratory failure, and tracheostomy"
      },
      "formula": "ribscore",
      "formula_expression": "RibScore = six_or_more_ribs + bilateral + flail_chest + three_or_more_displaced + first_rib + all_three_areas; each 1; Chapman 2016; max 6; caller-assigned radiographic flags; magent does not read a CT",
      "max_score": 6,
      "score": 0
    },
    {
      "components": [
        {
          "factor": "six_or_more_ribs",
          "points": 0,
          "present": false
        },
        {
          "factor": "bilateral",
          "points": 0,
          "present": false
        },
        {
          "factor": "flail_chest",
          "points": 0,
          "present": false
        },
        {
          "factor": "three_or_more_displaced",
          "points": 0,
          "present": false
        },
        {
          "factor": "first_rib",
          "points": 0,
          "present": false
        },
        {
          "factor": "all_three_areas",
          "points": 0,
          "present": false
        }
      ],
      "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": "Chapman BC, Herbert B, Rodil M, et al",
        "doi": "10.1097/TA.0000000000000867",
        "id": "chapman-2016",
        "pmid": "26683395",
        "source": "J Trauma Acute Care Surg. 2016;80(1):95-101",
        "title": "RibScore: A novel radiographic score based on fracture pattern that predicts pneumonia, respiratory failure, and tracheostomy"
      },
      "formula": "ribscore",
      "formula_expression": "RibScore = six_or_more_ribs + bilateral + flail_chest + three_or_more_displaced + first_rib + all_three_areas; each 1; Chapman 2016; max 6; caller-assigned radiographic flags; magent does not read a CT",
      "max_score": 6,
      "score": 0
    }
  ]
}

Response

Field Type Description
formula string ribscore
formula_expression string Exact expression used
score integer RibScore points 0-6
max_score integer Always 6
components array Per-flag Chapman 2016 points
citation object Chapman 2016 J Trauma Acute Care Surg citation
disclaimer string Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "factor": "six_or_more_ribs",
      "points": 0,
      "present": false
    },
    {
      "factor": "bilateral",
      "points": 0,
      "present": false
    },
    {
      "factor": "flail_chest",
      "points": 0,
      "present": false
    },
    {
      "factor": "three_or_more_displaced",
      "points": 0,
      "present": false
    },
    {
      "factor": "first_rib",
      "points": 0,
      "present": false
    },
    {
      "factor": "all_three_areas",
      "points": 0,
      "present": false
    }
  ],
  "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": "Chapman BC, Herbert B, Rodil M, et al",
    "doi": "10.1097/TA.0000000000000867",
    "id": "chapman-2016",
    "pmid": "26683395",
    "source": "J Trauma Acute Care Surg. 2016;80(1):95-101",
    "title": "RibScore: A novel radiographic score based on fracture pattern that predicts pneumonia, respiratory failure, and tracheostomy"
  },
  "formula": "ribscore",
  "formula_expression": "RibScore = six_or_more_ribs + bilateral + flail_chest + three_or_more_displaced + first_rib + all_three_areas; each 1; Chapman 2016; max 6; caller-assigned radiographic flags; magent does not read a CT",
  "max_score": 6,
  "score": 0
}

Client errors (HTTP 400)

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

HTTP Code When
400 invalid_ribscore RibScore inputs must match Chapman 2016 six radiographic flags from that paper. 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

  • ISS — Compute the Baker 1974 Injury Severity Score as the sum of squares of the three highest caller-assigned AIS body-region grades, or 75 if any region is AIS 6.
  • PTS — Compute the Tepas 1987 Pediatric Trauma Score from caller-assigned weight, airway, systolic BP, CNS, skeletal, and wound grades.

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.