Agent Service · x402 · early usage

BRUE (Tieder 2016 AAP)

by api.magentlab.com · discovered, not yet claimed by its owner · updated 2026-10-13

30d calls5

30d payers2

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

BRUE (Tieder 2016 AAP). brue is true iff the infant is younger than 1 year, the episode was sudden, brief, and now resolved, no explanation remains after appropriate history and physical examination, and at least one of: cyanosis or pallor; absent, decreased, or irregular breathing; marked change in tone; altered level of responsiveness. feature_count is 0-4. Caller assigns seven flags. magent does not examine the infant. Not a diagnosis, not ALTE, not SIDS.

Tags: brue · emergency · pediatric · infant · alte · bazaar

Call contract

Method: POST
Input: HTTP request
Output: json
Last paid call: 2026-10-13

Input example from Bazaar metadata

{
  "items": [
    {
      "absent_decreased_irregular_breathing": false,
      "age_under_1_year": true,
      "altered_responsiveness": false,
      "cyanosis_or_pallor": true,
      "marked_tone_change": false,
      "sudden_brief_now_resolved": true,
      "unexplained_after_history_exam": true
    },
    {
      "absent_decreased_irregular_breathing": false,
      "age_under_1_year": true,
      "altered_responsiveness": false,
      "cyanosis_or_pallor": true,
      "marked_tone_change": false,
      "sudden_brief_now_resolved": true,
      "unexplained_after_history_exam": true
    }
  ]
}

Output example

{
  "count": 2,
  "items": [
    {
      "brue": true,
      "citation": {
        "authors": "Tieder JS, Bonkowsky JL, Etzel RA, et al; American Academy of Pediatrics Subcommittee on Apparent Life-Threatening Events",
        "doi": "10.1542/peds.2016-0590",
        "id": "tieder-2016",
        "pmid": "27244835",
        "source": "Pediatrics. 2016;137(5):e20160590",
        "title": "Brief Resolved Unexplained Events (Formerly Apparent Life-Threatening Events) and Evaluation of Lower-Risk Infants"
      },
      "criteria": [
        {
          "factor": "age_under_1_year",
          "met": true
        },
        {
          "factor": "sudden_brief_now_resolved",
          "met": true
        },
        {
          "factor": "cyanosis_or_pallor",
          "met": true
        },
        {
          "factor": "absent_decreased_irregular_breathing",
          "met": false
        },
        {
          "factor": "marked_tone_change",
          "met": false
        },
        {
          "factor": "altered_responsiveness",
          "met": false
        },
        {
          "factor": "unexplained_after_history_exam",
          "met": true
        },
        {
          "factor": "feature_count_ge_1",
          "met": true,
          "value": 1
        }
      ],
      "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.",
      "feature_count": 1,
      "formula": "brue",
      "formula_expression": "brue iff age_under_1_year and sudden_brief_now_resolved and unexplained_after_history_exam and feature_count >= 1; feature_count counts cyanosis_or_pallor, absent_decreased_irregular_breathing, marked_tone_change, and altered_responsiveness (Tieder 2016 AAP BRUE definition)"
    },
    {
      "brue": true,
      "citation": {
        "authors": "Tieder JS, Bonkowsky JL, Etzel RA, et al; American Academy of Pediatrics Subcommittee on Apparent Life-Threatening Events",
        "doi": "10.1542/peds.2016-0590",
        "id": "tieder-2016",
        "pmid": "27244835",
        "source": "Pediatrics. 2016;137(5):e20160590",
        "title": "Brief Resolved Unexplained Events (Formerly Apparent Life-Threatening Events) and Evaluation of Lower-Risk Infants"
      },
      "criteria": [
        {
          "factor": "age_under_1_year",
          "met": true
        },
        {
          "factor": "sudden_brief_now_resolved",
          "met": true
        },
        {
          "factor": "cyanosis_or_pallor",
          "met": true
        },
        {
          "factor": "absent_decreased_irregular_breathing",
          "met": false
        },
        {
          "factor": "marked_tone_change",
          "met": false
        },
        {
          "factor": "altered_responsiveness",
          "met": false
        },
        {
          "factor": "unexplained_after_history_exam",
          "met": true
        },
        {
          "factor": "feature_count_ge_1",
          "met": true,
          "value": 1
        }
      ],
      "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.",
      "feature_count": 1,
      "formula": "brue",
      "formula_expression": "brue iff age_under_1_year and sudden_brief_now_resolved and unexplained_after_history_exam and feature_count >= 1; feature_count counts cyanosis_or_pallor, absent_decreased_irregular_breathing, marked_tone_change, and altered_responsiveness (Tieder 2016 AAP BRUE definition)"
    }
  ],
  "path": "/api/calc/brue"
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/39276.json for the price and payment options.
Pay. Call GET https://api.magentlab.com/api/calc/brue. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.005 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 5 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.005	0x836Be278f1739fB4308091cD1852F7971Bc19Ee2	600s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 600
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {},
  "type": "string"
}

Examples

curl

curl "https://api.magentlab.com/api/calc/brue"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.magentlab.com/api/calc/brue");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.magentlab.com/api/calc/brue")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: api.magentlab.com
Endpoint: https://api.magentlab.com/api/calc/brue
Machine-readable: /resources/39276.json