Fence Calc

{
  "asOf": "2026-10-11T14:25:13.159Z",
  "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.",
  "fenceRunFt": 100,
  "gates": 0,
  "heightFt": 6,
  "notChecked": [
    "corners, ends and gate posts beyond the simple count (line, corner and end posts are not separated)",
    "post depth, concrete, hardware and local height or setback rules",
    "…2 more"
  ],
  "pickets": 200,
  "picketsWithWaste": 210,
  "postSpacingFt": 8,
  "posts": 14,
  "railLinearFt": 312,
  "rails": 39,
  "reasons": [
    "Posts = sections + 1, plus one extra per gate (gates take 4 ft of the length).",
    "Three rails per section, by height.",
    "…1 more"
  ],
  "sections": 13,
  "source": "computed locally",
  "summary": "13 sections: 14 posts, 39 rails and 210 pickets (200 + 5% waste) for 100 ft at 6 ft high.",
  "verdict": "ESTIMATE"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://construction-calc.x402tookit.com/fence-calc?heightFt=6&lengthFt=100&picketGapIn=0.5&picketWidthIn=5.5&postSpacingFt=8'

# 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://construction-calc.x402tookit.com/fence-calc?heightFt=6&lengthFt=100&picketGapIn=0.5&picketWidthIn=5.5&postSpacingFt=8' \
  | 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%2Fconstruction-calc.x402tookit.com%2Ffence-calc
const res = await pay("https://construction-calc.x402tookit.com/fence-calc?heightFt=6&lengthFt=100&picketGapIn=0.5&picketWidthIn=5.5&postSpacingFt=8");
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://construction-calc.x402tookit.com/fence-calc?heightFt=6&lengthFt=100&picketGapIn=0.5&picketWidthIn=5.5&postSpacingFt=8")
    print(res.status_code, res.text)