Respiratory · LIVE

Roth score

Echo Chorin 2016 Roth-score measurements (highest number reached counting 1 to 30 in one breath, and elapsed counting time) plus Table 2/discussion threshold flags.

LIVE $0.005 USDC GET /api/calc/roth

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

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

What it computes

Echo Chorin 2016 Roth-score measurements (highest number reached counting 1 to 30 in one breath, and elapsed counting time) plus Table 2/discussion threshold flags.

When to use

When an agent already has caller-measured max_count and counting_time_seconds from a single-breath count to 30 and must not invent a hypoxia class, apply 2021 general-practice cutoffs, or treat the result as a respiratory-distress diagnosis.

When not to use

• Not a medical device. Not a hypoxia diagnosis, triage order, or respiratory-distress class. magent does not time the patient.
• Caller supplies max_count (integer 1-30, highest number reached) and counting_time_seconds (greater than 0 and at most 60). magent does not administer the count or run a stopwatch.
• Chorin 2016 reports correlations, AUCs, and Table 2 sensitivity/specificity rows without a single diagnostic class. magent echoes the two measurements and discussion-quoted threshold flags (max_count <10, counting_time <7 s, max_count <7, counting_time <5 s). It does not invent a hypoxia class.
• Does not apply 2021 COVID general-practice validation cutoffs.

Formula

echo max_count (integer 1-30) and counting_time_seconds (Equation.round_at 1 decimal); Chorin 2016 Table 2/discussion flags max_count <10, counting_time <7 s, max_count <7, counting_time <5 s; not a hypoxia class

Citation

Title

Assessment of respiratory distress by the Roth score

Authors

Chorin E, Padegimas A, Havakuk O, Birati EY, Shacham Y, Milman A, Topaz G, Flint N, Keren G, Rogowski O

Source

Clin Cardiol. 2016;39(11):636-639

DOI

10.1002/clc.22586

Worked example

Also searched as

• Roth score
• Roth count
• count to 30 in one breath
• single-breath count
• max count counting time
• Chorin Roth score
• Roth dyspnea score
• counting time Roth

Try

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

/api/calc/roth?max_count=30&counting_time_seconds=12

Full URL: https://api.magentlab.com/api/calc/roth?max_count=30&counting_time_seconds=12

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/roth?max_count=30&counting_time_seconds=12"

Parameters

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/roth 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": [
    {
      "counting_time_seconds": "12",
      "max_count": "30"
    },
    {
      "counting_time_seconds": "12",
      "max_count": "30"
    }
  ]
}

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/roth",
  "items": [
    {
      "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": "Chorin E, Padegimas A, Havakuk O, Birati EY, Shacham Y, Milman A, Topaz G, Flint N, Keren G, Rogowski O",
        "doi": "10.1002/clc.22586",
        "id": "chorin-2016",
        "pmid": "27701750",
        "source": "Clin Cardiol. 2016;39(11):636-639",
        "title": "Assessment of respiratory distress by the Roth score"
      },
      "formula": "roth",
      "formula_expression": "echo max_count (integer 1-30) and counting_time_seconds (Equation.round_at 1 decimal); Chorin 2016 Table 2/discussion flags max_count <10, counting_time <7 s, max_count <7, counting_time <5 s; not a hypoxia class",
      "counting_time_lt_5_seconds": false,
      "counting_time_lt_7_seconds": false,
      "counting_time_seconds": 12.0,
      "max_count": 30,
      "max_count_lt_10": false,
      "max_count_lt_7": 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": "Chorin E, Padegimas A, Havakuk O, Birati EY, Shacham Y, Milman A, Topaz G, Flint N, Keren G, Rogowski O",
        "doi": "10.1002/clc.22586",
        "id": "chorin-2016",
        "pmid": "27701750",
        "source": "Clin Cardiol. 2016;39(11):636-639",
        "title": "Assessment of respiratory distress by the Roth score"
      },
      "formula": "roth",
      "formula_expression": "echo max_count (integer 1-30) and counting_time_seconds (Equation.round_at 1 decimal); Chorin 2016 Table 2/discussion flags max_count <10, counting_time <7 s, max_count <7, counting_time <5 s; not a hypoxia class",
      "counting_time_lt_5_seconds": false,
      "counting_time_lt_7_seconds": false,
      "counting_time_seconds": 12.0,
      "max_count": 30,
      "max_count_lt_10": false,
      "max_count_lt_7": false
    }
  ]
}

Response

Example JSON

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

{
  "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": "Chorin E, Padegimas A, Havakuk O, Birati EY, Shacham Y, Milman A, Topaz G, Flint N, Keren G, Rogowski O",
    "doi": "10.1002/clc.22586",
    "id": "chorin-2016",
    "pmid": "27701750",
    "source": "Clin Cardiol. 2016;39(11):636-639",
    "title": "Assessment of respiratory distress by the Roth score"
  },
  "formula": "roth",
  "formula_expression": "echo max_count (integer 1-30) and counting_time_seconds (Equation.round_at 1 decimal); Chorin 2016 Table 2/discussion flags max_count <10, counting_time <7 s, max_count <7, counting_time <5 s; not a hypoxia class",
  "counting_time_lt_5_seconds": false,
  "counting_time_lt_7_seconds": false,
  "counting_time_seconds": 12.0,
  "max_count": 30,
  "max_count_lt_10": false,
  "max_count_lt_7": false
}

Client errors (HTTP 400)

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

Related tools

• qCSI — Sum Haimovich 2020 qCSI bedside points (Table 2) from respiratory rate, lowest SpO2, and nasal-cannula oxygen flow and return the integer total (max 12).
• PaO2/FiO2 ratio — Compute the PaO2/FiO2 ratio as arterial PO2 in mm Hg divided by inspired oxygen fraction.

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.