Depreciation

{
  "asOf": "2026-10-11T14:38:36.611Z",
  "averageLossPerYear": 3253.34,
  "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.",
  "finalValue": 13733.28,
  "method": "schedule",
  "notChecked": [
    "the real market: model, mileage, condition, color, region and economic shocks move used prices far more than any formula",
    "accident history, recalls and fuel-price swings, which change values suddenly",
    "…2 more"
  ],
  "price": 30000,
  "reasons": [
    "Schedule: each year loses the stated % of the value remaining at its start."
  ],
  "schedule": [
    {
      "lostThisYear": 6000,
      "percentOfPriceRemaining": 80,
      "value": 24000,
      "year": 1
    },
    {
      "lostThisYear": 3600,
      "percentOfPriceRemaining": 68,
      "value": 20400,
      "year": 2
    }
  ],
  "source": "computed locally",
  "summary": "After 5 years the value is 13733.28 (45.78% of 30000): 16266.72 lost, 3253.34 a year on average; first year 6000.",
  "totalLoss": 16266.72,
  "verdict": "COMPUTED",
  "years": 5
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://automotive-calc.x402tookit.com/depreciation?method=schedule&price=30000&schedule=20%2C15%2C15%2C12%2C10&years=5'

# 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://automotive-calc.x402tookit.com/depreciation?method=schedule&price=30000&schedule=20%2C15%2C15%2C12%2C10&years=5' \
  | 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%2Fautomotive-calc.x402tookit.com%2Fdepreciation
const res = await pay("https://automotive-calc.x402tookit.com/depreciation?method=schedule&price=30000&schedule=20%2C15%2C15%2C12%2C10&years=5");
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://automotive-calc.x402tookit.com/depreciation?method=schedule&price=30000&schedule=20%2C15%2C15%2C12%2C10&years=5")
    print(res.status_code, res.text)