ToolVet
59trust / 100

Inflation Adjust

by Investing Math in Markets & finance

x402 APIPassing, checked 3 h ago

What an amount costs or is worth after years of steady inflation, plus the real return after inflation for a nominal return.

GET
https://invest-math.x402tookit.com/inflation-adjust
Price
$0.02
per call in USDC
Uptime
56.3%
last 30 days
Response time
538 ms
615 ms slowest 5%
Last check
Passed
3 h ago, next in 3 h

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://invest-math.x402tookit.com/inflation-adjust

Each call costs $0.02 in USDC on Polygon, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://invest-math.x402tookit.com/inflation-adjust?amount=100&inflationPct=3&nominalReturnPct=7&years=10

Parameters

ParameterTypeRequiredDescription
amountnumberYesAmount in today's money
inflationPctnumberYesYearly inflation in percent, -10 to 100
nominalReturnPctnumberNoA nominal yearly return in percent, to get the real return
yearsnumberYesYears, 0 to 100

Example response

The provider's example. We can't check it without paying.

{
  "asOf": "2026-10-11T20:30:29.201Z",
  "cumulativeInflationPct": 34.3916,
  "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.",
  "futureCostOfToday": 134.3916379,
  "halvingYears": 23.45,
  "notChecked": [
    "actual inflation, which is not steady and differs by the goods you buy (use official CPI series for real data)",
    "taxes on investment returns",
    "…1 more"
  ],
  "priceMultiple": 1.3439164,
  "purchasingPowerOfAmount": 74.40939149,
  "realGrowthOfAmount": 146.3745355,
  "realReturnPct": 3.8835,
  "reasons": [
    "Future cost = amount x (1 + inflation)^years; purchasing power is the inverse.",
    "Real return = (1 + nominal) / (1 + inflation) - 1, slightly less than nominal minus inflation."
  ],
  "source": "computed locally",
  "summary": "At 3% inflation, what costs 100 today costs 134.39 in 10 years, and 100 then buys what 74.41 buys today. A 7% nominal return is a 3.883% real return (Fisher equation).",
  "verdict": "COMPUTED"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://invest-math.x402tookit.com/inflation-adjust?amount=100&inflationPct=3&nominalReturnPct=7&years=10'

# 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://invest-math.x402tookit.com/inflation-adjust?amount=100&inflationPct=3&nominalReturnPct=7&years=10' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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%2Finvest-math.x402tookit.com%2Finflation-adjust
const res = await pay("https://invest-math.x402tookit.com/inflation-adjust?amount=100&inflationPct=3&nominalReturnPct=7&years=10");
console.log(res.status, await res.text());
Python: pay and call
# 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://invest-math.x402tookit.com/inflation-adjust?amount=100&inflationPct=3&nominalReturnPct=7&years=10")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402576 ms$0.02
16 h agoPassed402552 ms$0.02
46 h agoExpected HTTP 402, got 53053094 ms-
3 days agoExpected HTTP 402, got 530530107 ms-
4 days agoExpected HTTP 402, got 530530132 ms-
Show 10 older checks
5 days agoExpected HTTP 402, got 530530105 ms-
5 days agoExpected HTTP 402, got 53053099 ms-
5 days agoExpected HTTP 402, got 530530198 ms-
5 days agoExpected HTTP 402, got 530530171 ms-
5 days agoPassed402528 ms$0.02
6 days agoPassed402538 ms$0.02
6 days agoPassed402615 ms$0.02
6 days agoPassed402578 ms$0.02
6 days agoPassed402499 ms$0.02
6 days agoPassed402496 ms$0.02