# Rome IV infant functional constipation Rome IV Infant Constipation Status: LIVE Price: $0.005 USDC `GET /api/calc/rome_iv_infant_constipation` HTML: https://magentlab.com/docs/rome-iv-infant-constipation Markdown: https://magentlab.com/docs/rome-iv-infant-constipation.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Apply the Benninga 2016 Rome IV G7 functional constipation (neonate/toddler) criteria and return features_met and whether the published infant constipation box holds (rome_iv_infant_constipation). ## When to use When an agent already has the caller-assigned Benninga 2016 Rome IV G7 flags (including toilet_trained and, when assigned, digital rectal exam as large_fecal_mass_in_rectum) and needs whether the published infant functional constipation box holds. magent does not examine the infant. ## When not to use - Not a medical device. - Not a diagnosis. magent does not diagnose infant functional constipation. - The caller assigns the flags, including large_fecal_mass_in_rectum (digital rectal exam is caller-assigned). magent does not examine the infant. - This tool is Benninga 2016 Rome IV G7 functional constipation (neonate/toddler, infants up to 4 years) only. Not adult Rome IV FC (Mearin 2016 C2). Not child H3a. ## Formula ``` rome_iv_infant_constipation iff duration_at_least_1_month and features_met >= 2; features_met always counts two_or_fewer_defecations_per_week, history_of_excessive_stool_retention, history_of_painful_or_hard_bowel_movements, history_of_large_diameter_stools, and large_fecal_mass_in_rectum; if toilet_trained also counts incontinence_after_toileting_at_least_weekly and large_diameter_stools_that_may_obstruct_toilet (Benninga 2016 Rome IV G7 Functional Constipation) ``` ## Citation [Childhood Functional Gastrointestinal Disorders: Neonate/Toddler](https://doi.org/10.1053/j.gastro.2016.02.016) Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S Gastroenterology. 2016;150(6):1443-1455 DOI: [10.1053/j.gastro.2016.02.016](https://doi.org/10.1053/j.gastro.2016.02.016) ## Worked example ### Not toilet-trained, two of five core features, and 1-month duration Given: `duration_at_least_1_month=true, history_of_excessive_stool_retention=false, history_of_large_diameter_stools=false, history_of_painful_or_hard_bowel_movements=true, incontinence_after_toileting_at_least_weekly=false, large_diameter_stools_that_may_obstruct_toilet=false, large_fecal_mass_in_rectum=false, toilet_trained=false, two_or_fewer_defecations_per_week=true` 1. toilet_trained is false; extras are not counted 2. two_or_fewer_defecations_per_week and history_of_painful_or_hard_bowel_movements are true (2 of 5 core) 3. duration_at_least_1_month is true 4. rome_iv_infant_constipation is true ### 1-month duration with only one of five core features Given: `duration_at_least_1_month=true, history_of_excessive_stool_retention=false, history_of_large_diameter_stools=false, history_of_painful_or_hard_bowel_movements=false, incontinence_after_toileting_at_least_weekly=false, large_diameter_stools_that_may_obstruct_toilet=false, large_fecal_mass_in_rectum=false, toilet_trained=false, two_or_fewer_defecations_per_week=true` 1. duration_at_least_1_month is true 2. Only two_or_fewer_defecations_per_week is true (1 of 5 core) 3. rome_iv_infant_constipation is false ## Also searched as - Rome IV infant constipation - Benninga 2016 infant constipation - Rome IV G7 - infant functional constipation - neonate toddler constipation - Rome IV G7 functional constipation - toilet trained infant constipation - Benninga 2016 G7 ## Parameters - `toilet_trained` (boolean, required): Toilet-trained as assigned (Benninga 2016 Rome IV G7). When true, incontinence_after_toileting_at_least_weekly and large_diameter_stools_that_may_obstruct_toilet count toward features_met. true or false as assigned by the caller. magent does not examine the infant. - `two_or_fewer_defecations_per_week` (boolean, required): Two or fewer defecations per week, as assigned (Benninga 2016 Rome IV G7; one of five core features). true or false as assigned by the caller. magent does not examine the infant. - `history_of_excessive_stool_retention` (boolean, required): History of excessive stool retention, as assigned (Benninga 2016 Rome IV G7; one of five core features). true or false as assigned by the caller. magent does not examine the infant. - `history_of_painful_or_hard_bowel_movements` (boolean, required): History of painful or hard bowel movements, as assigned (Benninga 2016 Rome IV G7; one of five core features). true or false as assigned by the caller. magent does not examine the infant. - `history_of_large_diameter_stools` (boolean, required): History of large-diameter stools, as assigned (Benninga 2016 Rome IV G7; one of five core features). true or false as assigned by the caller. magent does not examine the infant. - `large_fecal_mass_in_rectum` (boolean, required): Large fecal mass in the rectum, as assigned (Benninga 2016 Rome IV G7; one of five core features). Digital rectal exam is caller-assigned. true or false as assigned by the caller. magent does not examine the infant. - `incontinence_after_toileting_at_least_weekly` (boolean, required): At least one episode per week of incontinence after the acquisition of toileting skills, as assigned (Benninga 2016 Rome IV G7 extra; counted only when toilet_trained is true). true or false as assigned by the caller. magent does not examine the infant. - `large_diameter_stools_that_may_obstruct_toilet` (boolean, required): History of large-diameter stools that may obstruct the toilet, as assigned (Benninga 2016 Rome IV G7 extra; counted only when toilet_trained is true). true or false as assigned by the caller. magent does not examine the infant. - `duration_at_least_1_month` (boolean, required): Must include 1 month of at least 2 features, as assigned (Benninga 2016 Rome IV G7). true or false as assigned by the caller. magent does not examine the infant. ## 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. Method: `POST /api/calc/rome_iv_infant_constipation` Max items: 25 Price: unit_amount + extra_item_amount * (n - 1) (unit 5000 atomic, extra 2000 atomic) Status: 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: ```json { "items": [ { "duration_at_least_1_month": "true", "history_of_excessive_stool_retention": "false", "history_of_large_diameter_stools": "false", "history_of_painful_or_hard_bowel_movements": "true", "incontinence_after_toileting_at_least_weekly": "false", "large_diameter_stools_that_may_obstruct_toilet": "false", "large_fecal_mass_in_rectum": "false", "toilet_trained": "false", "two_or_fewer_defecations_per_week": "true" }, { "duration_at_least_1_month": "true", "history_of_excessive_stool_retention": "false", "history_of_large_diameter_stools": "false", "history_of_painful_or_hard_bowel_movements": "true", "incontinence_after_toileting_at_least_weekly": "false", "large_diameter_stools_that_may_obstruct_toilet": "false", "large_fecal_mass_in_rectum": "false", "toilet_trained": "false", "two_or_fewer_defecations_per_week": "true" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/rome-iv-infant-constipation Example 200: ```json { "count": 2, "path": "/api/calc/rome_iv_infant_constipation", "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": "Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S", "doi": "10.1053/j.gastro.2016.02.016", "id": "benninga-2016", "pmid": "27144631", "source": "Gastroenterology. 2016;150(6):1443-1455", "title": "Childhood Functional Gastrointestinal Disorders: Neonate/Toddler" }, "formula": "rome_iv_infant_constipation", "formula_expression": "rome_iv_infant_constipation iff duration_at_least_1_month and features_met >= 2; features_met always counts two_or_fewer_defecations_per_week, history_of_excessive_stool_retention, history_of_painful_or_hard_bowel_movements, history_of_large_diameter_stools, and large_fecal_mass_in_rectum; if toilet_trained also counts incontinence_after_toileting_at_least_weekly and large_diameter_stools_that_may_obstruct_toilet (Benninga 2016 Rome IV G7 Functional Constipation)", "criteria": [ { "factor": "toilet_trained", "met": false }, { "factor": "two_or_fewer_defecations_per_week", "met": true }, { "factor": "history_of_excessive_stool_retention", "met": false }, { "factor": "history_of_painful_or_hard_bowel_movements", "met": true }, { "factor": "history_of_large_diameter_stools", "met": false }, { "factor": "large_fecal_mass_in_rectum", "met": false }, { "factor": "incontinence_after_toileting_at_least_weekly", "met": false }, { "factor": "large_diameter_stools_that_may_obstruct_toilet", "met": false }, { "factor": "duration_at_least_1_month", "met": true }, { "value": 2, "factor": "features_ge_2", "met": true } ], "features_met": 2, "rome_iv_infant_constipation": 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": "Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S", "doi": "10.1053/j.gastro.2016.02.016", "id": "benninga-2016", "pmid": "27144631", "source": "Gastroenterology. 2016;150(6):1443-1455", "title": "Childhood Functional Gastrointestinal Disorders: Neonate/Toddler" }, "formula": "rome_iv_infant_constipation", "formula_expression": "rome_iv_infant_constipation iff duration_at_least_1_month and features_met >= 2; features_met always counts two_or_fewer_defecations_per_week, history_of_excessive_stool_retention, history_of_painful_or_hard_bowel_movements, history_of_large_diameter_stools, and large_fecal_mass_in_rectum; if toilet_trained also counts incontinence_after_toileting_at_least_weekly and large_diameter_stools_that_may_obstruct_toilet (Benninga 2016 Rome IV G7 Functional Constipation)", "criteria": [ { "factor": "toilet_trained", "met": false }, { "factor": "two_or_fewer_defecations_per_week", "met": true }, { "factor": "history_of_excessive_stool_retention", "met": false }, { "factor": "history_of_painful_or_hard_bowel_movements", "met": true }, { "factor": "history_of_large_diameter_stools", "met": false }, { "factor": "large_fecal_mass_in_rectum", "met": false }, { "factor": "incontinence_after_toileting_at_least_weekly", "met": false }, { "factor": "large_diameter_stools_that_may_obstruct_toilet", "met": false }, { "factor": "duration_at_least_1_month", "met": true }, { "value": 2, "factor": "features_ge_2", "met": true } ], "features_met": 2, "rome_iv_infant_constipation": true } ] } ``` ## Response fields - `formula` (string): rome_iv_infant_constipation - `formula_expression` (string): Benninga 2016 Rome IV G7: duration at least 1 month and at least 2 features; extras count only when toilet-trained - `features_met` (integer): Count of true features among the five core flags, plus the two extras only when toilet_trained is true - `rome_iv_infant_constipation` (boolean): true only when duration_at_least_1_month and features_met >= 2. Not a diagnosis. - `criteria` (array): Per-factor rows with factor and met; features_ge_2 includes value (features_met) - `citation` (object): Benninga 2016 Gastroenterology citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "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": "Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S", "doi": "10.1053/j.gastro.2016.02.016", "id": "benninga-2016", "pmid": "27144631", "source": "Gastroenterology. 2016;150(6):1443-1455", "title": "Childhood Functional Gastrointestinal Disorders: Neonate/Toddler" }, "formula": "rome_iv_infant_constipation", "formula_expression": "rome_iv_infant_constipation iff duration_at_least_1_month and features_met >= 2; features_met always counts two_or_fewer_defecations_per_week, history_of_excessive_stool_retention, history_of_painful_or_hard_bowel_movements, history_of_large_diameter_stools, and large_fecal_mass_in_rectum; if toilet_trained also counts incontinence_after_toileting_at_least_weekly and large_diameter_stools_that_may_obstruct_toilet (Benninga 2016 Rome IV G7 Functional Constipation)", "criteria": [ { "factor": "toilet_trained", "met": false }, { "factor": "two_or_fewer_defecations_per_week", "met": true }, { "factor": "history_of_excessive_stool_retention", "met": false }, { "factor": "history_of_painful_or_hard_bowel_movements", "met": true }, { "factor": "history_of_large_diameter_stools", "met": false }, { "factor": "large_fecal_mass_in_rectum", "met": false }, { "factor": "incontinence_after_toileting_at_least_weekly", "met": false }, { "factor": "large_diameter_stools_that_may_obstruct_toilet", "met": false }, { "factor": "duration_at_least_1_month", "met": true }, { "value": 2, "factor": "features_ge_2", "met": true } ], "features_met": 2, "rome_iv_infant_constipation": true } ``` ## Errors - HTTP 400 `invalid_rome_iv_infant_constipation`: Rome IV infant functional constipation needs the Benninga 2016 neonate/toddler G7 flags. Returned before settlement; you are not charged. - HTTP 400 `invalid_flag`: boolean clinical flags must be true or false Returned before settlement; you are not charged. - HTTP 400 `invalid_items`: POST body must be a JSON object with only an items array Returned before settlement; you are not charged. - HTTP 400 `invalid_item_count`: items must be an array of 1 to 25 objects Returned before settlement; you are not charged. - HTTP 400 `invalid_item`: each items entry must be a JSON object Returned before settlement; you are not charged. Shared HTTP 402 and 503: https://magentlab.com/docs/payments ## Related tools - [Rome IV Infant Dyschezia](https://magentlab.com/docs/rome-iv-infant-dyschezia) — Apply the Benninga 2016 Rome IV G6 infant dyschezia diagnostic criteria and return whether the published infant dyschezia box holds (rome_iv_infant_dyschezia). - [Rome IV FC](https://magentlab.com/docs/rome-iv-fc) — Apply the Mearin 2016 Rome IV C2 functional constipation criteria and return symptom_count (0-6) and whether the published C2 box holds (rome_iv_fc). ## 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. - GET the tool with Accept: application/json (do not send Accept: text/html unless you want the human paywall). - HTTP 402 means you have not paid. Decode the base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote. - Sign accepts[0] (exact, EIP-3009) with validBefore = now + maxTimeoutSeconds (600 seconds), or accepts[1] (batch-settlement deposit/voucher) on product GET. Ping and POST {items} stay exact. Magent retries transient facilitator 429/5xx before answering. - Retry the same URL with PAYMENT-SIGNATURE (base64 JSON of accepted and payload). Magent attaches canonical extensions.bazaar on CDP verify/settle; echoing 402 bazaar is optional. - Success is HTTP 200 JSON plus PAYMENT-RESPONSE. exact settles before the tool. batch-settlement verifies (and deposit-settles) before the tool and commits the charge after HTTP 2xx. HTTP 503: retry the same PAYMENT-SIGNATURE. Mint a new exact nonce only after a new HTTP 402. - offered `exact` on eip155:8453: Fixed-price USDC on Base. The buyer authorizes the advertised amount (EIP-3009). magent settles before the tool runs (paymentFlow upfront). extra.assetTransferMethod=eip3009 extra.paymentFlow=upfront. - offered `batch-settlement` on eip155:8453: Payment-channel vouchers claimed later in batches. Exact stays accepts[0]. Same-path POST {items} is still exact. extra.assetTransferMethod=eip3009 extra.paymentFlow=authorization. - not offered `upto`: Not offered. Usage-based: buyer authorizes a ceiling, seller settles the actual amount after work. Reserved for a future metered tool. Not for current calculators or code search. Same-path POST {items} is still scheme exact: one EIP-3009 authorization for GET unit plus $0.002 per extra item. That is not x402 batch-settlement (payment channels / vouchers). Shared HTTP 402 and 503 table: https://magentlab.com/docs/payments Stdio MCP (one process per host): https://magentlab.com/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.