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Rome IV belching disorders

Rome IV belching

Apply the Stanghellini 2016 Rome IV belching disorders (B2) diagnostic criteria and return whether the published B2 box holds (rome_iv_belching), with caller-assigned B2a supragastric or B2b gastric origin.

LIVE $0.005 USDC GET /api/calc/rome_iv_belching

Markdown: /docs/rome-iv-belching.md · Canonical: https://magentlab.com/docs/rome-iv-belching

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

What it computes

When to use

When an agent already has the three caller-assigned Stanghellini 2016 Rome IV B2 flags and belching_origin (supragastric or gastric) and needs whether the published belching-disorders box holds. magent does not take a history or measure impedance.

When not to use

Not a medical device.
Not a diagnosis. magent does not diagnose belching disorders.
The caller assigns the three flags and belching_origin. magent does not take a history or measure impedance. Objective impedance distinguishes supragastric from gastric belching in the paper; magent does not run impedance.
This tool is Stanghellini 2016 Rome IV belching disorders (B2) only, with B2a excessive supragastric belching or B2b excessive gastric belching as caller-assigned origin. Not adult aerophagia (historical). Not child H1d aerophagia. Not Rome IV bloating. Not functional dyspepsia.

Formula

rome_iv_belching iff bothersome_belching_more_than_3_days_week and fulfilled_last_3_months and onset_at_least_6_months and belching_origin in (supragastric, gastric) (Stanghellini 2016 Rome IV belching disorders)

Citation

Title: Gastroduodenal Disorders
Authors: Stanghellini V, Chan FKL, Hasler WL, Malagelada JR, Suzuki H, Tack J, Talley NJ
Source: Gastroenterology. 2016;150(6):1380-1392
DOI: 10.1053/j.gastro.2016.02.011

Worked example

All three required flags with supragastric origin

Given: belching_origin=supragastricbothersome_belching_more_than_3_days_week=truefulfilled_last_3_months=trueonset_at_least_6_months=true

Bothersome belching from the esophagus or stomach more than 3 days a week is true
Criteria fulfilled for the last 3 months and onset at least 6 months prior are true
belching_origin is supragastric (B2a, from the esophagus)
rome_iv_belching is true

Three-month criteria without 6-month onset

Given: belching_origin=supragastricbothersome_belching_more_than_3_days_week=truefulfilled_last_3_months=trueonset_at_least_6_months=false

Bothersome belching more than 3 days a week is true
Criteria fulfilled for the last 3 months is true
Onset at least 6 months prior is false
belching_origin is supragastric
rome_iv_belching is false

Also searched as

Rome IV belching
Rome IV belching disorders
Stanghellini 2016 belching
excessive supragastric belching
excessive gastric belching
Rome IV B2 belching
Rome IV B2a B2b
gastroduodenal belching

Try

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

/api/calc/rome_iv_belching?bothersome_belching_more_than_3_days_week=true&fulfilled_last_3_months=true&onset_at_least_6_months=true&belching_origin=supragastric

Full URL: https://api.magentlab.com/api/calc/rome_iv_belching?bothersome_belching_more_than_3_days_week=true&fulfilled_last_3_months=true&onset_at_least_6_months=true&belching_origin=supragastric

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/rome_iv_belching?bothersome_belching_more_than_3_days_week=true&fulfilled_last_3_months=true&onset_at_least_6_months=true&belching_origin=supragastric"

Parameters

Name	Type	Required	Description
`bothersome_belching_more_than_3_days_week`	boolean	required	Bothersome (severe enough to impact usual activities) belching from the esophagus or stomach more than 3 days a week (Stanghellini 2016 Rome IV B2). true or false as assigned by the caller. magent does not take a history.
`fulfilled_last_3_months`	boolean	required	Criteria fulfilled for the last 3 months, as assigned (Stanghellini 2016). true or false as assigned by the caller. magent does not take a history.
`onset_at_least_6_months`	boolean	required	Symptom onset at least 6 months prior to diagnosis, as assigned (Stanghellini 2016). true or false as assigned by the caller. magent does not take a history.
`belching_origin`	string	required · supragastric, gastric	Caller-assigned origin of excessive belching: supragastric (B2a, from the esophagus) or gastric (B2b, from the stomach) (Stanghellini 2016). Objective impedance distinguishes them in the paper; magent does not measure impedance.

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/rome_iv_belching 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": [
    {
      "belching_origin": "supragastric",
      "bothersome_belching_more_than_3_days_week": "true",
      "fulfilled_last_3_months": "true",
      "onset_at_least_6_months": "true"
    },
    {
      "belching_origin": "supragastric",
      "bothersome_belching_more_than_3_days_week": "true",
      "fulfilled_last_3_months": "true",
      "onset_at_least_6_months": "true"
    }
  ]
}

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/rome_iv_belching",
  "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": "Stanghellini V, Chan FKL, Hasler WL, Malagelada JR, Suzuki H, Tack J, Talley NJ",
        "doi": "10.1053/j.gastro.2016.02.011",
        "id": "stanghellini-2016",
        "pmid": "27147122",
        "source": "Gastroenterology. 2016;150(6):1380-1392",
        "title": "Gastroduodenal Disorders"
      },
      "formula": "rome_iv_belching",
      "formula_expression": "rome_iv_belching iff bothersome_belching_more_than_3_days_week and fulfilled_last_3_months and onset_at_least_6_months and belching_origin in (supragastric, gastric) (Stanghellini 2016 Rome IV belching disorders)",
      "criteria": [
        {
          "factor": "bothersome_belching_more_than_3_days_week",
          "met": true
        },
        {
          "factor": "fulfilled_last_3_months",
          "met": true
        },
        {
          "factor": "onset_at_least_6_months",
          "met": true
        },
        {
          "factor": "belching_origin",
          "met": true
        }
      ],
      "belching_origin": "supragastric",
      "rome_iv_belching": 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": "Stanghellini V, Chan FKL, Hasler WL, Malagelada JR, Suzuki H, Tack J, Talley NJ",
        "doi": "10.1053/j.gastro.2016.02.011",
        "id": "stanghellini-2016",
        "pmid": "27147122",
        "source": "Gastroenterology. 2016;150(6):1380-1392",
        "title": "Gastroduodenal Disorders"
      },
      "formula": "rome_iv_belching",
      "formula_expression": "rome_iv_belching iff bothersome_belching_more_than_3_days_week and fulfilled_last_3_months and onset_at_least_6_months and belching_origin in (supragastric, gastric) (Stanghellini 2016 Rome IV belching disorders)",
      "criteria": [
        {
          "factor": "bothersome_belching_more_than_3_days_week",
          "met": true
        },
        {
          "factor": "fulfilled_last_3_months",
          "met": true
        },
        {
          "factor": "onset_at_least_6_months",
          "met": true
        },
        {
          "factor": "belching_origin",
          "met": true
        }
      ],
      "belching_origin": "supragastric",
      "rome_iv_belching": true
    }
  ]
}

Response

Field	Type	Description
`formula`	string	rome_iv_belching
`formula_expression`	string	Stanghellini 2016 Rome IV B2: bothersome belching from the esophagus or stomach more than 3 days a week, last-3-months criteria, 6-month onset, and belching_origin supragastric (B2a) or gastric (B2b)
`rome_iv_belching`	boolean	true only when all three required flags hold and belching_origin is supragastric or gastric. Not a diagnosis.
`belching_origin`	string	Caller-assigned origin: supragastric (B2a, esophagus) or gastric (B2b, stomach). magent does not measure impedance.
`criteria`	array	Per-factor rows with factor and met for the three required flags and accepted belching_origin
`citation`	object	Stanghellini 2016 Gastroenterology citation
`disclaimer`	string	Not-a-device notice

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": "Stanghellini V, Chan FKL, Hasler WL, Malagelada JR, Suzuki H, Tack J, Talley NJ",
    "doi": "10.1053/j.gastro.2016.02.011",
    "id": "stanghellini-2016",
    "pmid": "27147122",
    "source": "Gastroenterology. 2016;150(6):1380-1392",
    "title": "Gastroduodenal Disorders"
  },
  "formula": "rome_iv_belching",
  "formula_expression": "rome_iv_belching iff bothersome_belching_more_than_3_days_week and fulfilled_last_3_months and onset_at_least_6_months and belching_origin in (supragastric, gastric) (Stanghellini 2016 Rome IV belching disorders)",
  "criteria": [
    {
      "factor": "bothersome_belching_more_than_3_days_week",
      "met": true
    },
    {
      "factor": "fulfilled_last_3_months",
      "met": true
    },
    {
      "factor": "onset_at_least_6_months",
      "met": true
    },
    {
      "factor": "belching_origin",
      "met": true
    }
  ],
  "belching_origin": "supragastric",
  "rome_iv_belching": true
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_rome_iv_belching`	Rome IV belching needs the Stanghellini 2016 gastroduodenal B2 flags and belching_origin supragastric or gastric. 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

Rome IV FD — Apply the Stanghellini 2016 Rome IV B1 functional dyspepsia criteria and return whether PDS (B1a), EPS (B1b), and the published FD box hold (rome_iv_fd).
Rome IV Bloating — Apply the Mearin 2016 Rome IV C4 functional abdominal bloating/distension criteria and return whether the published C4 box holds (rome_iv_bloating).
Rome IV child aerophagia — Apply the Hyams 2016 Rome IV H1d child/adolescent aerophagia diagnostic criteria and return whether the published aerophagia box holds (rome_iv_child_aerophagia).

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.