Calculate compound interest with precision using principal, rate, time, and compounding frequency. Available via MCP in Cursor and other AI editors, or REST API at `/v1/finance/compound-interest`. Input $1000 at 5% annually for 10 years, get exact future value calculations. Returns both final amount and interest earned separately.
curl "https://tinyfn.io/v1/finance/compound-interest" \
-H "X-API-Key: YOUR_API_KEY"const response = await fetch('https://tinyfn.io/v1/finance/compound-interest', {
headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);import requests
response = requests.get('https://tinyfn.io/v1/finance/compound-interest',
headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's finance tools:
{
"mcpServers": {
"tinyfn-finance": {
"url": "https://tinyfn.io/mcp/finance",
"headers": {
"X-API-Key": "YOUR_API_KEY"
}
}
}
}Specify the compounding frequency (annual, quarterly, monthly, daily) along with principal, interest rate, and time period. The tool applies the standard compound interest formula A = P(1 + r/n)^(nt).
Yes, Claude Code, Cursor, and other MCP clients can call this tool to perform accurate compound interest calculations for investment scenarios, loan analysis, or financial projections without approximation errors.
Simple interest calculates on principal only, while compound interest includes interest earned on previous interest. This tool specifically handles the compounding effect with configurable frequencies.
Yes, the tool accepts decimal time periods like 2.5 years or 18 months (1.5 years) and calculates proportional compound growth accurately.
Returns JSON with final amount, total interest earned, principal amount, effective rate, and calculation details. All monetary values are precise decimals, not rounded approximations.
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