Stocking Rate

{
  "acresNeededForHerd": 112.32,
  "acresPerAnimalUnitForSeason": 4.68,
  "animalUnitMonths": 128.2051,
  "animalUnitsDemanded": 24,
  "animalUnitsPerHead": 1.2,
  "animalUnitsSupported": 21.3675,
  "animals": 20,
  "asOf": "2026-10-11T23:40:38.068Z",
  "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.",
  "grazingMonths": 6,
  "headSupported": 17.8063,
  "headSupportedWhole": 17,
  "loadRatio": 1.1232,
  "notChecked": [
    "actual forage production this year (drought, species, grazing history)",
    "forage quality, water, fencing and rotation plan",
    "…2 more"
  ],
  "reasons": [
    "Usable forage = acres x yield x 50% = 100000 lb dry matter; one AUM takes 780 lb.",
    "Your 20 head is 24 animal units against 21.37 supported; the herd needs about 112.3 acres."
  ],
  "source": "computed locally (animal unit = 1000 lb; AUM = 780 lb forage dry matter by convention)",
  "summary": "Supports about 21.37 animal units (17.8 head of 1200 lb) for 180 days. Herd of 20: over capacity (load 1.123).",
  "usableForageLbDm": 100000,
  "verdict": "OVERSTOCKED"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://agri-calc.x402tookit.com/stocking-rate?acres=100&animalWeightLb=1200&animals=20&forageLbDmPerAcre=2000&grazingDays=180'

# 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://agri-calc.x402tookit.com/stocking-rate?acres=100&animalWeightLb=1200&animals=20&forageLbDmPerAcre=2000&grazingDays=180' \
  | 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%2Fagri-calc.x402tookit.com%2Fstocking-rate
const res = await pay("https://agri-calc.x402tookit.com/stocking-rate?acres=100&animalWeightLb=1200&animals=20&forageLbDmPerAcre=2000&grazingDays=180");
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://agri-calc.x402tookit.com/stocking-rate?acres=100&animalWeightLb=1200&animals=20&forageLbDmPerAcre=2000&grazingDays=180")
    print(res.status_code, res.text)