Respiratory · LIVE

Modified Asthma Predictive Index

Apply Guilbert 2004 PEAK Table I and return a binary modified Asthma Predictive Index flag from caller-assigned history of 4 or more wheezing episodes and six major/minor criteria.

LIVE $0.005 USDC GET /api/calc/mapi

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

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

What it computes

Apply Guilbert 2004 PEAK Table I and return a binary modified Asthma Predictive Index flag from caller-assigned history of 4 or more wheezing episodes and six major/minor criteria.

When to use

When an agent has a caller-assigned history of 4 or more wheezing episodes in one year (at least one physician-diagnosed) and the published major and minor criteria for a child at high risk of childhood asthma and needs the Guilbert 2004 modified Asthma Predictive Index, not the Castro-Rodriguez 2000 original API, not Chang 2013 m²API, and not an asthma diagnosis.

When not to use

• Not a medical device. Not a diagnosis of asthma. magent does not examine the child.
• This tool is the Guilbert 2004 modified Asthma Predictive Index (mAPI, PEAK Table I) only. It is not the Castro-Rodriguez 2000 original Asthma Predictive Index (stringent and loose). It is not Chang 2013 m²API (≥2 wheeze episodes).
• The caller assigns 4 or more wheeze episodes, parental asthma, MD atopic dermatitis, aeroallergen sensitization, food sensitization to milk, egg, or peanut, wheezing unrelated to colds, and blood eosinophils ≥4%. magent does not take an eosinophil percent and does not interpret a CBC.
• Derivation was in the PEAK trial among children with recurrent wheezing at high risk for childhood asthma. magent does not take numeric age.
• positive is a published risk-index flag, not an asthma diagnosis or a treatment or inhaler order.

Formula

positive iff four_or_more_wheeze_episodes and (major_count >= 1 or minor_count >= 2); majors parental_asthma, md_atopic_dermatitis, aeroallergen_sensitization; minors food_sensitization_milk_egg_peanut, wheezing_unrelated_to_colds, eosinophilia_ge_4pct (Guilbert 2004 PEAK Table I)

Citation

Title

Atopic characteristics of children with recurrent wheezing at high risk for the development of childhood asthma

Authors

Guilbert TW, Morgan WJ, Zeiger RS, et al.

Source

J Allergy Clin Immunol. 2004;114(6):1282-1287

DOI

10.1016/j.jaci.2004.09.020

Worked example

Also searched as

• Modified Asthma Predictive Index
• mAPI
• Guilbert 2004
• PEAK trial mAPI
• PEAK Table I
• modified Asthma Predictive Index
• aeroallergen sensitization wheeze
• Guilbert recurrent wheezing

Try

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

/api/calc/mapi?four_or_more_wheeze_episodes=false&parental_asthma=false&md_atopic_dermatitis=false&aeroallergen_sensitization=false&food_sensitization_milk_egg_peanut=false&wheezing_unrelated_to_colds=false&eosinophilia_ge_4pct=false

Full URL: https://api.magentlab.com/api/calc/mapi?four_or_more_wheeze_episodes=false&parental_asthma=false&md_atopic_dermatitis=false&aeroallergen_sensitization=false&food_sensitization_milk_egg_peanut=false&wheezing_unrelated_to_colds=false&eosinophilia_ge_4pct=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/mapi?four_or_more_wheeze_episodes=false&parental_asthma=false&md_atopic_dermatitis=false&aeroallergen_sensitization=false&food_sensitization_milk_egg_peanut=false&wheezing_unrelated_to_colds=false&eosinophilia_ge_4pct=false"

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/mapi 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": [
    {
      "aeroallergen_sensitization": "false",
      "eosinophilia_ge_4pct": "false",
      "food_sensitization_milk_egg_peanut": "false",
      "four_or_more_wheeze_episodes": "false",
      "md_atopic_dermatitis": "false",
      "parental_asthma": "false",
      "wheezing_unrelated_to_colds": "false"
    },
    {
      "aeroallergen_sensitization": "false",
      "eosinophilia_ge_4pct": "false",
      "food_sensitization_milk_egg_peanut": "false",
      "four_or_more_wheeze_episodes": "false",
      "md_atopic_dermatitis": "false",
      "parental_asthma": "false",
      "wheezing_unrelated_to_colds": "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/mapi",
  "items": [
    {
      "positive": 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": "Guilbert TW, Morgan WJ, Zeiger RS, et al.",
        "doi": "10.1016/j.jaci.2004.09.020",
        "id": "guilbert-2004",
        "pmid": "15577824",
        "source": "J Allergy Clin Immunol. 2004;114(6):1282-1287",
        "title": "Atopic characteristics of children with recurrent wheezing at high risk for the development of childhood asthma"
      },
      "formula": "mapi",
      "formula_expression": "positive iff four_or_more_wheeze_episodes and (major_count >= 1 or minor_count >= 2); majors parental_asthma, md_atopic_dermatitis, aeroallergen_sensitization; minors food_sensitization_milk_egg_peanut, wheezing_unrelated_to_colds, eosinophilia_ge_4pct (Guilbert 2004 PEAK Table I)",
      "criteria": [
        {
          "factor": "four_or_more_wheeze_episodes",
          "met": false
        },
        {
          "factor": "parental_asthma",
          "met": false
        },
        {
          "factor": "md_atopic_dermatitis",
          "met": false
        },
        {
          "factor": "aeroallergen_sensitization",
          "met": false
        },
        {
          "factor": "food_sensitization_milk_egg_peanut",
          "met": false
        },
        {
          "factor": "wheezing_unrelated_to_colds",
          "met": false
        },
        {
          "factor": "eosinophilia_ge_4pct",
          "met": false
        }
      ],
      "major_count": 0,
      "minor_count": 0,
      "four_or_more_wheeze_episodes": false
    },
    {
      "positive": 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": "Guilbert TW, Morgan WJ, Zeiger RS, et al.",
        "doi": "10.1016/j.jaci.2004.09.020",
        "id": "guilbert-2004",
        "pmid": "15577824",
        "source": "J Allergy Clin Immunol. 2004;114(6):1282-1287",
        "title": "Atopic characteristics of children with recurrent wheezing at high risk for the development of childhood asthma"
      },
      "formula": "mapi",
      "formula_expression": "positive iff four_or_more_wheeze_episodes and (major_count >= 1 or minor_count >= 2); majors parental_asthma, md_atopic_dermatitis, aeroallergen_sensitization; minors food_sensitization_milk_egg_peanut, wheezing_unrelated_to_colds, eosinophilia_ge_4pct (Guilbert 2004 PEAK Table I)",
      "criteria": [
        {
          "factor": "four_or_more_wheeze_episodes",
          "met": false
        },
        {
          "factor": "parental_asthma",
          "met": false
        },
        {
          "factor": "md_atopic_dermatitis",
          "met": false
        },
        {
          "factor": "aeroallergen_sensitization",
          "met": false
        },
        {
          "factor": "food_sensitization_milk_egg_peanut",
          "met": false
        },
        {
          "factor": "wheezing_unrelated_to_colds",
          "met": false
        },
        {
          "factor": "eosinophilia_ge_4pct",
          "met": false
        }
      ],
      "major_count": 0,
      "minor_count": 0,
      "four_or_more_wheeze_episodes": false
    }
  ]
}

Response

Example JSON

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

{
  "positive": 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": "Guilbert TW, Morgan WJ, Zeiger RS, et al.",
    "doi": "10.1016/j.jaci.2004.09.020",
    "id": "guilbert-2004",
    "pmid": "15577824",
    "source": "J Allergy Clin Immunol. 2004;114(6):1282-1287",
    "title": "Atopic characteristics of children with recurrent wheezing at high risk for the development of childhood asthma"
  },
  "formula": "mapi",
  "formula_expression": "positive iff four_or_more_wheeze_episodes and (major_count >= 1 or minor_count >= 2); majors parental_asthma, md_atopic_dermatitis, aeroallergen_sensitization; minors food_sensitization_milk_egg_peanut, wheezing_unrelated_to_colds, eosinophilia_ge_4pct (Guilbert 2004 PEAK Table I)",
  "criteria": [
    {
      "factor": "four_or_more_wheeze_episodes",
      "met": false
    },
    {
      "factor": "parental_asthma",
      "met": false
    },
    {
      "factor": "md_atopic_dermatitis",
      "met": false
    },
    {
      "factor": "aeroallergen_sensitization",
      "met": false
    },
    {
      "factor": "food_sensitization_milk_egg_peanut",
      "met": false
    },
    {
      "factor": "wheezing_unrelated_to_colds",
      "met": false
    },
    {
      "factor": "eosinophilia_ge_4pct",
      "met": false
    }
  ],
  "major_count": 0,
  "minor_count": 0,
  "four_or_more_wheeze_episodes": false
}

Client errors (HTTP 400)

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

Related tools

• Asthma Predictive Index — Apply Castro-Rodriguez 2000 Table 1 and return stringent and loose Asthma Predictive Index flags from caller-assigned early-wheeze class and five major/minor criteria.
• PRAM — Sum five caller-assigned Chalut 2000 PRAM item points and return the published 0-12 total.

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.