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Delx Commerce Sortino-Lite API
x402
Delx Commerce Sortino-Lite API is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes the Sortino ratio and downside standard deviation for a given array of periodic returns
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object with: the count of observations (n), the mean return, the Sortino ratio (penalizing only downside volatility), and the downside standard deviation — all following the delx/util-sortino-lite/v1 schema.
Example use cases
Backtested strategy risk assessment
“I ran a backtest on my momentum strategy and got these monthly returns: [0.04, -0.02, 0.01, 0.03, -0.015, 0.025, -0.005, 0.02]. Can you compute the Sortino ratio so I can see how it penalizes downside risk?”
Portfolio comparison by downside risk
“I have two sets of weekly returns for two ETFs I'm comparing. For ETF A the returns are [0.01, -0.005, 0.02, -0.01, 0.015]. Can you get the Sortino ratio and downside deviation so I can see which one has better risk-adjusted performance on the downside?”
Trading bot performance monitoring
“My algo's last 10 daily returns were [0.003, -0.002, 0.005, -0.001, 0.004, -0.003, 0.002, 0.001, -0.004, 0.006]. What's the Sortino ratio so I can track whether it's improving over time?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/sortino-lite?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call Sortino ratio calculation without any sign-up or API key overhead — ideal for agent workflows that occasionally need downside-risk-adjusted performance metrics on the fly. Prefer it over full portfolio analytics suites when you only need the Sortino ratio and downside deviation, not a comprehensive report.
Side effects
- Empty or missing returns array — API may return error or zero values
- Non-numeric values in the returns array causing computation failure
- Insufficient data points for meaningful statistical computation
- All returns positive (no downside deviation) — Sortino ratio may be undefined or zero
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| returns | array | Input field: returns. |
Output
Schema · Response
{
"type": "json",
"example": {
"n": 4,
"mean": 0.00875,
"schema": "delx/util-sortino-lite/v1",
"sortino": 0,
"downside_stdev": 0
}
}Tags
x402
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