Bakers Percentages

{
  "asOf": "2026-10-11T14:26:07.951Z",
  "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.",
  "ingredients": [
    {
      "grams": 500,
      "ingredient": "bread flour",
      "percentOfTotalFlour": 90.91
    },
    {
      "grams": 350,
      "ingredient": "water",
      "percentOfTotalFlour": 63.64
    }
  ],
  "notChecked": [
    "ingredients not recognised as flour: only names containing flour, semolina, rye, spelt, durum or whole wheat count as flour",
    "water inside milk, eggs, honey or butter: hydration counts only ingredients named water or ice, plus the water in a starter",
    "…1 more"
  ],
  "overallHydrationPercent": 72.73,
  "prefermentedFlourPercent": 9.09,
  "reasons": [
    "Baker's percentage = ingredient weight / total flour weight x 100, so flour is 100%.",
    "The starter's own flour and water are split out using its hydration and counted in the totals."
  ],
  "saltPercent": 1.82,
  "scaleFactor": 1,
  "source": "computed locally",
  "starterFlourG": 50,
  "starterG": 100,
  "starterHydrationPercent": 100,
  "starterPercentOfTotalFlour": 18.18,
  "starterWaterG": 50,
  "summary": "Total flour 550 g (including the flour in the starter); overall hydration 72.7%; salt 1.82%.",
  "totalDoughG": 960,
  "totalFlourG": 550,
  "totalWaterG": 400,
  "verdict": "COMPUTED"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://cooking-calc.x402tookit.com/bakers-percentages?formula=bread+flour%3A500%3B+water%3A350%3B+salt%3A10%3B+starter%3A100&starterHydrationPct=100'

# 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://cooking-calc.x402tookit.com/bakers-percentages?formula=bread+flour%3A500%3B+water%3A350%3B+salt%3A10%3B+starter%3A100&starterHydrationPct=100' \
  | 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%2Fcooking-calc.x402tookit.com%2Fbakers-percentages
const res = await pay("https://cooking-calc.x402tookit.com/bakers-percentages?formula=bread+flour%3A500%3B+water%3A350%3B+salt%3A10%3B+starter%3A100&starterHydrationPct=100");
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://cooking-calc.x402tookit.com/bakers-percentages?formula=bread+flour%3A500%3B+water%3A350%3B+salt%3A10%3B+starter%3A100&starterHydrationPct=100")
    print(res.status_code, res.text)