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Compound Returns
x402
Compound Returns is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Compounds a list of period returns into a total growth factor and cumulative return via local deterministic math.
Price / call$0.001
Success—
StatusUnknown
How this service works
Compound a list of period returns into a total growth factor. Call when multi-period performance rollups from return series you already have. Returns compounded factor and total return as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.
Output
Returns a deterministic JSON object containing the compounded growth factor (product of all (1 + r) terms) and the total return as a percentage or decimal, computed purely from the input return series with no external data sources.
Example use cases
Annual portfolio performance rollup
“I have 12 monthly returns for my portfolio: [0.03, -0.02, 0.015, 0.04, -0.01, 0.025, 0.01, 0.03, -0.005, 0.02, 0.04, 0.015]. Can you compound them all together and give me the total annual return?”
Backtesting strategy cumulative return
“I ran a backtest and have daily returns for 30 trading days: [0.001, -0.002, 0.003, 0.0005, -0.001, 0.002, 0.0015, -0.0005, 0.001, 0.002, -0.001, 0.0025, 0.001, -0.0015, 0.002, 0.0005, 0.003, -0.001, 0.002, 0.001, -0.0005, 0.0015, 0.002, -0.001, 0.003, 0.0005, -0.002, 0.001, 0.002, -0.001]. What's the compounded growth factor and total return over the period?”
Quarterly fund return aggregation
“My fund had four quarterly returns this year: 4.2%, -1.8%, 3.5%, and 2.1%. Can you compound those together to get the full-year growth factor and total return?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/compound-returnWhen to prefer
Choose this endpoint when you already have a series of period returns in hand and need a quick, deterministic, server-side computation of the compounded total — especially in agentic pipelines where you want a cost-effective ($0.001 USDC), stateless, no-API-key math operation without standing up your own calculation logic. Prefer this over general-purpose code execution when you want a guaranteed deterministic JSON response with no side effects.
Side effects
- Empty or missing 'returns' array returns an error or undefined result
- Non-numeric values in the returns array cause computation failure
- Extremely large arrays may hit request size limits
- Returns expressed as percentages vs decimals may yield incorrect results if format is inconsistent
- Network timeout or x402 payment failure prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| returns | array | Input field: returns. |
Output
Schema · Response
{
"type": "json",
"example": {
"n": 3,
"factor": 1.025049,
"schema": "delx/util-compound-return/v1",
"total_return": 0.0250490000000001
}
}Tags
x402
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