ToolVet
75trust / 100

Calc Intrauterine Rbc

by magent in Other

x402 APIPassing, checked 9 h ago

Mandelbrot 1988 intrauterine RBC transfusion volume: fetoplacental_volume_ml = 1.046 + estimated_fetal_weight_g * 0.14; volume_ml uses the unrounded fetoplacental volume times (hct_final_percent - hct_initial_percent) / hct_donor_percent. Hematocrit arm only; the paper also allowed platelet count — magent does not implement platelets. Caller-assigned estimated fetal weight; magent does not estimate weight from biometry. Not a medical device or transfusion order.

GET
https://api.magentlab.com/api/calc/intrauterine_rbc
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
142 ms
748 ms slowest 5%
Last check
Passed
9 h ago, next any minute now

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How to call it

GET https://api.magentlab.com/api/calc/intrauterine_rbc

Each call costs $0.005 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.

GET https://api.magentlab.com/api/calc/intrauterine_rbc?estimated_fetal_weight_g=1000&hct_donor_percent=80&hct_final_percent=40&hct_initial_percent=20

Parameters

ParameterTypeRequiredDescription
estimated_fetal_weight_gnumberYesCaller-assigned estimated fetal weight in grams (200-4000). Required. magent does not estimate fetal weight from biometry.
hct_donor_percentnumberYesDonor unit hematocrit as a percent (60-90). Must be strictly greater than hct_final_percent.
hct_final_percentnumberYesTarget fetal hematocrit as a percent (20-60). Must be strictly greater than hct_initial_percent and strictly less than hct_donor_percent.
hct_initial_percentnumberYesInitial fetal hematocrit as a percent (5-50). Must be strictly less than hct_final_percent.

Example response

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

{
  "citation": {
    "authors": "Mandelbrot L, Daffos F, Forestier F, MacAleese J, Descombey D",
    "doi": "10.1159/000263335",
    "id": "mandelbrot-1988",
    "pmid": "3257068",
    "source": "Fetal Ther. 1988;3(1-2):60-66",
    "title": "Assessment of fetal blood volume for computer-assisted management of in utero transfusion"
  },
  "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.",
  "estimated_fetal_weight_g": 1000,
  "fetoplacental_volume_ml": 141,
  "formula": "mandelbrot_hct",
  "formula_expression": "fetoplacental_volume_ml = 1.046 + estimated_fetal_weight_g * 0.14; volume_ml = fetoplacental_volume_ml * (hct_final_percent - hct_initial_percent) / hct_donor_percent",
  "hct_donor_percent": 80,
  "hct_final_percent": 40,
  "hct_initial_percent": 20,
  "volume_ml": 35.3
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.magentlab.com/api/calc/intrauterine_rbc?estimated_fetal_weight_g=1000&hct_donor_percent=80&hct_final_percent=40&hct_initial_percent=20'

# 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 - 'https://api.magentlab.com/api/calc/intrauterine_rbc?estimated_fetal_weight_g=1000&hct_donor_percent=80&hct_final_percent=40&hct_initial_percent=20' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fintrauterine_rbc
const res = await pay("https://api.magentlab.com/api/calc/intrauterine_rbc?estimated_fetal_weight_g=1000&hct_donor_percent=80&hct_final_percent=40&hct_initial_percent=20");
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.magentlab.com/api/calc/intrauterine_rbc?estimated_fetal_weight_g=1000&hct_donor_percent=80&hct_final_percent=40&hct_initial_percent=20")
    print(res.status_code, res.text)

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