Ingredient Density

{
  "asOf": "2026-10-11T14:26:09.001Z",
  "cupDefinition": "US customary cup, 236.588 mL",
  "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": [
    {
      "confidence": "two_sources",
      "gramsPerTablespoon": 7.8,
      "gramsPerTeaspoon": 2.6,
      "gramsPerUsCup": 125,
      "highestSourceGramsPerCup": 136,
      "ingredient": "all-purpose flour",
      "lowestSourceGramsPerCup": 120,
      "note": "Varies 10 to 20% with scooping; spooned-and-levelled is lighter than dipped.",
      "sources": [
        "King Arthur chart: 120 g/cup",
        "USDA-based tables (secondary): 125 g/cup",
        "…1 more"
      ]
    }
  ],
  "notChecked": [
    "your brand and how you pack the cup: flour varies by 10 to 20% between scooped and spooned",
    "foods not in the table",
    "…1 more"
  ],
  "reasons": [
    "All values are approximate. 'two_sources' means two published sources agree within about 10 to 15%; 'single_source' means one."
  ],
  "source": "computed locally",
  "summary": "all-purpose flour: about 125 g per US cup (sources range 120 to 136).",
  "verdict": "DENSITY_LISTED"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://cooking-calc.x402tookit.com/ingredient-density?ingredient=flour'

# 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/ingredient-density?ingredient=flour' \
  | 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%2Fingredient-density
const res = await pay("https://cooking-calc.x402tookit.com/ingredient-density?ingredient=flour");
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/ingredient-density?ingredient=flour")
    print(res.status_code, res.text)