ToolVet
71trust / 100

Calc Rome Iv Ibs

by magent in Other

x402 APIPassing, checked 4 h ago

Mearin 2016 Rome IV IBS. rome_iv_ibs is true iff recurrent abdominal pain at least 1 day per week in the last 3 months, onset at least 6 months prior, and at least two of: related to defecation, change in stool frequency, and change in stool form. supporting_features_met is 0-3. Caller assigns five flags. magent does not examine the patient. Not a diagnosis, not Rome III, not IBS subtype.

POST
https://api.magentlab.com/api/calc/rome_iv_ibs
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
274 ms
465 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.magentlab.com/api/calc/rome_iv_ibs

Each call costs $0.007 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.magentlab.com/api/calc/rome_iv_ibs
content-type: application/json

{
  "items": [
    {
      "associated_change_stool_form": false,
      "associated_change_stool_frequency": true,
      "pain_1_day_per_week_last_3_months": true,
      "related_to_defecation": true,
      "symptom_onset_at_least_6_months_prior": true
    },
    {
      "associated_change_stool_form": false,
      "associated_change_stool_frequency": true,
      "pain_1_day_per_week_last_3_months": true,
      "related_to_defecation": true,
      "symptom_onset_at_least_6_months_prior": true
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

The provider's example. We can't check it without paying.

Example response, 90 lines
{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Mearin F, Lacy BE, Chang L, Chey WD, Lembo AJ, Simren M, Spiller RC",
        "doi": "10.1053/j.gastro.2016.02.031",
        "id": "mearin-2016",
        "pmid": "27144627",
        "source": "Gastroenterology. 2016;150(6):1393-1407",
        "title": "Bowel Disorders"
      },
      "criteria": [
        {
          "factor": "pain_1_day_per_week_last_3_months",
          "met": true
        },
        {
          "factor": "symptom_onset_at_least_6_months_prior",
          "met": true
        },
        {
          "factor": "related_to_defecation",
          "met": true
        },
        {
          "factor": "associated_change_stool_frequency",
          "met": true
        },
        {
          "factor": "associated_change_stool_form",
          "met": false
        },
        {
          "factor": "supporting_features_ge_2",
          "met": true,
          "value": 2
        }
      ],
      "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.",
      "formula": "rome_iv_ibs",
      "formula_expression": "rome_iv_ibs iff pain_1_day_per_week_last_3_months and symptom_onset_at_least_6_months_prior and supporting_features_met >= 2; supporting_features_met counts related_to_defecation, associated_change_stool_frequency, and associated_change_stool_form (Mearin 2016 Rome IV IBS diagnostic criteria)",
      "rome_iv_ibs": true,
      "supporting_features_met": 2
    },
    {
      "citation": {
        "authors": "Mearin F, Lacy BE, Chang L, Chey WD, Lembo AJ, Simren M, Spiller RC",
        "doi": "10.1053/j.gastro.2016.02.031",
        "id": "mearin-2016",
        "pmid": "27144627",
        "source": "Gastroenterology. 2016;150(6):1393-1407",
        "title": "Bowel Disorders"
      },
      "criteria": [
        {
          "factor": "pain_1_day_per_week_last_3_months",
          "met": true
        },
        {
          "factor": "symptom_onset_at_least_6_months_prior",
          "met": true
        },
        {
          "factor": "related_to_defecation",
          "met": true
        },
        {
          "factor": "associated_change_stool_frequency",
          "met": true
        },
        {
          "factor": "associated_change_stool_form",
          "met": false
        },
        {
          "factor": "supporting_features_ge_2",
          "met": true,
          "value": 2
        }
      ],
      "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.",
      "formula": "rome_iv_ibs",
      "formula_expression": "rome_iv_ibs iff pain_1_day_per_week_last_3_months and symptom_onset_at_least_6_months_prior and supporting_features_met >= 2; supporting_features_met counts related_to_defecation, associated_change_stool_frequency, and associated_change_stool_form (Mearin 2016 Rome IV IBS diagnostic criteria)",
      "rome_iv_ibs": true,
      "supporting_features_met": 2
    }
  ],
  "path": "/api/calc/rome_iv_ibs"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.007.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/rome_iv_ibs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"associated_change_stool_form":false,"associated_change_stool_frequency":true,"pain_1_day_per_week_last_3_months":true,"related_to_defecation":true,"symptom_onset_at_least_6_months_prior":true},{"associated_change_stool_form":false,"associated_change_stool_frequency":true,"pain_1_day_per_week_last_3_months":true,"related_to_defecation":true,"symptom_onset_at_least_6_months_prior":true}]}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.magentlab.com/api/calc/rome_iv_ibs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"associated_change_stool_form":false,"associated_change_stool_frequency":true,"pain_1_day_per_week_last_3_months":true,"related_to_defecation":true,"symptom_onset_at_least_6_months_prior":true},{"associated_change_stool_form":false,"associated_change_stool_frequency":true,"pain_1_day_per_week_last_3_months":true,"related_to_defecation":true,"symptom_onset_at_least_6_months_prior":true}]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.007" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Frome_iv_ibs&method=POST
const res = await pay("https://api.magentlab.com/api/calc/rome_iv_ibs", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "associated_change_stool_form": false,
        "associated_change_stool_frequency": true,
        "pain_1_day_per_week_last_3_months": true,
        "related_to_defecation": true,
        "symptom_onset_at_least_6_months_prior": true
      },
      {
        "associated_change_stool_form": false,
        "associated_change_stool_frequency": true,
        "pain_1_day_per_week_last_3_months": true,
        "related_to_defecation": true,
        "symptom_onset_at_least_6_months_prior": true
      }
    ]
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.007"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.magentlab.com/api/calc/rome_iv_ibs",
        json={
            "items": [
                {
                    "associated_change_stool_form": False,
                    "associated_change_stool_frequency": True,
                    "pain_1_day_per_week_last_3_months": True,
                    "related_to_defecation": True,
                    "symptom_onset_at_least_6_months_prior": True,
                },
                {
                    "associated_change_stool_form": False,
                    "associated_change_stool_frequency": True,
                    "pain_1_day_per_week_last_3_months": True,
                    "related_to_defecation": True,
                    "symptom_onset_at_least_6_months_prior": True,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

1 finding

  • Charges more than its listed price in payment
    Listed at $0.005, charges $0.007

Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402266 ms$0.007
9 h agoPassed402427 ms$0.007
14 h agoPassed402274 ms$0.007
18 h agoPassed402277 ms$0.007
23 h agoPassed402365 ms$0.007
Show 10 older checks
27 h agoPassed402255 ms$0.007
31 h agoPassed402418 ms$0.007
35 h agoPassed402338 ms$0.007
39 h agoPassed402300 ms$0.007
44 h agoPassed402465 ms$0.007
2 days agoPassed402159 ms$0.007
2 days agoPassed402250 ms$0.007
2 days agoPassed402403 ms$0.007
3 days agoPassed402431 ms$0.007
3 days agoPassed402260 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007