ToolVet
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Calc Rome Iv Cnvs

by magent in Other

x402 APIPassing, checked 2 h ago

Stanghellini 2016 Rome IV chronic nausea vomiting syndrome (CNVS, B3a). rome_iv_cnvs is true iff bothersome nausea at least 1 day per week and/or one or more vomiting episodes per week as one flag, self-induced vomiting eating disorders regurgitation and rumination excluded, no organic systemic or metabolic explanation including at upper endoscopy, last-3-months criteria, and 6-month onset. magent does not take a history or read endoscopy. Not a diagnosis, not CVS, not CHS, not rumination.

POST
https://api.magentlab.com/api/calc/rome_iv_cnvs
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
156 ms
432 ms slowest 5%
Last check
Passed
2 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_cnvs

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_cnvs
content-type: application/json

{
  "items": [
    {
      "bothersome_nausea_or_vomiting_weekly": true,
      "fulfilled_last_3_months": true,
      "no_organic_systemic_metabolic_explanation": true,
      "onset_at_least_6_months": true,
      "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded": true
    },
    {
      "bothersome_nausea_or_vomiting_weekly": true,
      "fulfilled_last_3_months": true,
      "no_organic_systemic_metabolic_explanation": true,
      "onset_at_least_6_months": true,
      "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded": true
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 78 lines
{
  "count": 2,
  "items": [
    {
      "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"
      },
      "criteria": [
        {
          "factor": "bothersome_nausea_or_vomiting_weekly",
          "met": true
        },
        {
          "factor": "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded",
          "met": true
        },
        {
          "factor": "no_organic_systemic_metabolic_explanation",
          "met": true
        },
        {
          "factor": "fulfilled_last_3_months",
          "met": true
        },
        {
          "factor": "onset_at_least_6_months",
          "met": 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.",
      "formula": "rome_iv_cnvs",
      "formula_expression": "rome_iv_cnvs iff bothersome_nausea_or_vomiting_weekly and self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded and no_organic_systemic_metabolic_explanation and fulfilled_last_3_months and onset_at_least_6_months (Stanghellini 2016 Rome IV chronic nausea vomiting syndrome)",
      "rome_iv_cnvs": true
    },
    {
      "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"
      },
      "criteria": [
        {
          "factor": "bothersome_nausea_or_vomiting_weekly",
          "met": true
        },
        {
          "factor": "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded",
          "met": true
        },
        {
          "factor": "no_organic_systemic_metabolic_explanation",
          "met": true
        },
        {
          "factor": "fulfilled_last_3_months",
          "met": true
        },
        {
          "factor": "onset_at_least_6_months",
          "met": 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.",
      "formula": "rome_iv_cnvs",
      "formula_expression": "rome_iv_cnvs iff bothersome_nausea_or_vomiting_weekly and self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded and no_organic_systemic_metabolic_explanation and fulfilled_last_3_months and onset_at_least_6_months (Stanghellini 2016 Rome IV chronic nausea vomiting syndrome)",
      "rome_iv_cnvs": true
    }
  ],
  "path": "/api/calc/rome_iv_cnvs"
}

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_cnvs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bothersome_nausea_or_vomiting_weekly":true,"fulfilled_last_3_months":true,"no_organic_systemic_metabolic_explanation":true,"onset_at_least_6_months":true,"self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded":true},{"bothersome_nausea_or_vomiting_weekly":true,"fulfilled_last_3_months":true,"no_organic_systemic_metabolic_explanation":true,"onset_at_least_6_months":true,"self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded":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_cnvs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bothersome_nausea_or_vomiting_weekly":true,"fulfilled_last_3_months":true,"no_organic_systemic_metabolic_explanation":true,"onset_at_least_6_months":true,"self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded":true},{"bothersome_nausea_or_vomiting_weekly":true,"fulfilled_last_3_months":true,"no_organic_systemic_metabolic_explanation":true,"onset_at_least_6_months":true,"self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded":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_cnvs&method=POST
const res = await pay("https://api.magentlab.com/api/calc/rome_iv_cnvs", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "bothersome_nausea_or_vomiting_weekly": true,
        "fulfilled_last_3_months": true,
        "no_organic_systemic_metabolic_explanation": true,
        "onset_at_least_6_months": true,
        "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded": true
      },
      {
        "bothersome_nausea_or_vomiting_weekly": true,
        "fulfilled_last_3_months": true,
        "no_organic_systemic_metabolic_explanation": true,
        "onset_at_least_6_months": true,
        "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded": 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_cnvs",
        json={
            "items": [
                {
                    "bothersome_nausea_or_vomiting_weekly": True,
                    "fulfilled_last_3_months": True,
                    "no_organic_systemic_metabolic_explanation": True,
                    "onset_at_least_6_months": True,
                    "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded": True,
                },
                {
                    "bothersome_nausea_or_vomiting_weekly": True,
                    "fulfilled_last_3_months": True,
                    "no_organic_systemic_metabolic_explanation": True,
                    "onset_at_least_6_months": True,
                    "self_induced_vomiting_eating_disorders_regurgitation_rumination_excluded": 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
2 h agoPassed402153 ms$0.007
7 h agoPassed402432 ms$0.007
12 h agoPassed402241 ms$0.007
16 h agoPassed402156 ms$0.007
21 h agoPassed402465 ms$0.007
Show 10 older checks
25 h agoPassed402142 ms$0.007
29 h agoPassed402144 ms$0.007
33 h agoPassed402152 ms$0.007
38 h agoPassed402152 ms$0.007
42 h agoPassed402200 ms$0.007
46 h agoPassed402159 ms$0.007
2 days agoPassed402232 ms$0.007
2 days agoPassed402302 ms$0.007
2 days agoPassed402157 ms$0.007
3 days agoPassed402161 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007