Dividend Math

{
  "annualIncome": 200,
  "asOf": "2026-10-11T20:30:28.143Z",
  "cumulativeDividends": 2515.578507,
  "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.",
  "dividendAfterYears": 3.2577893,
  "growthPct": 5,
  "monthlyIncome": 16.666667,
  "notChecked": [
    "whether the dividend will be paid, cut or grown: it is a decision the company can change",
    "share price changes, which this ignores (yield on cost uses today's price)",
    "…2 more"
  ],
  "positionValue": 5000,
  "reasons": [
    "Yield = dividend / price; yield on cost = future dividend / today's price.",
    "Cumulative dividends are the sum of each year's dividend: year 1 is today's dividend, then it grows."
  ],
  "source": "computed locally",
  "summary": "Yield 4%; 200 a year on 100 shares. After 10 years at 5% growth the dividend is 3.2578 a share (yield on cost 6.52%) and 2515.58 has been paid in total.",
  "verdict": "COMPUTED",
  "years": 10,
  "yieldOnCostPct": 6.51558,
  "yieldPct": 4
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://invest-math.x402tookit.com/dividend-math?annualDividend=2&growthPct=5&price=50&shares=100&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/dividend-math?annualDividend=2&growthPct=5&price=50&shares=100&years=10' \
  | 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%2Finvest-math.x402tookit.com%2Fdividend-math
const res = await pay("https://invest-math.x402tookit.com/dividend-math?annualDividend=2&growthPct=5&price=50&shares=100&years=10");
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://invest-math.x402tookit.com/dividend-math?annualDividend=2&growthPct=5&price=50&shares=100&years=10")
    print(res.status_code, res.text)