Bmr Tdee

{
  "activity": "moderate",
  "activityFactor": 1.55,
  "asOf": "2026-10-11T08:36:49.299Z",
  "belowCommonMinimum": false,
  "bmrKcal": 1780,
  "commonMinimumKcal": 1500,
  "dailyDeficitOrSurplusKcal": -550,
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "equation": "Mifflin-St Jeor (1990)",
  "inputs": {
    "age": 30,
    "heightCm": 180,
    "sex": "male",
    "weightKg": 80
  },
  "maintenanceByActivity": {
    "active": 3071,
    "light": 2448,
    "moderate": 2759,
    "sedentary": 2136,
    "very-active": 3382
  },
  "maintenanceKcal": 2759,
  "notChecked": [
    "individual metabolism: the equation is accurate to about 10% for most healthy adults and worse outside that group",
    "lean mass (very muscular or very lean people burn more)",
    "…2 more"
  ],
  "reasons": [
    "BMR = 10 x kg + 6.25 x cm - 5 x age + 5 (male) or - 161 (female). Activity multipliers: 1.2, 1.375, 1.55, 1.725, 1.9.",
    "About 7,700 kcal is conventionally one kg of body fat; real weight change is slower and varies.",
    "…1 more"
  ],
  "source": "computed locally",
  "summary": "BMR 1780 kcal/day; maintenance at moderate activity about 2759 kcal/day; for -0.5 kg per week, about 2209 kcal/day.",
  "targetKcal": 2209,
  "verdict": "COMPUTED",
  "weeklyChangeKg": -0.5
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://fitness-calc.x402tookit.com/bmr-tdee?activity=moderate&age=30&height=180&sex=male&weeklyChange=-0.5&weight=80'

# 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://fitness-calc.x402tookit.com/bmr-tdee?activity=moderate&age=30&height=180&sex=male&weeklyChange=-0.5&weight=80' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffitness-calc.x402tookit.com%2Fbmr-tdee
const res = await pay("https://fitness-calc.x402tookit.com/bmr-tdee?activity=moderate&age=30&height=180&sex=male&weeklyChange=-0.5&weight=80");
console.log(res.status, await res.text());

# 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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://fitness-calc.x402tookit.com/bmr-tdee?activity=moderate&age=30&height=180&sex=male&weeklyChange=-0.5&weight=80")
    print(res.status_code, res.text)