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Portfolio Stats – Maximum Drawdown
x402
Portfolio Stats – Maximum Drawdown is a paid API for AI agents from portfolio-stats.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Calculates the maximum drawdown of a price or return series, returning peak, trough, and recovery indices or dates.
Price / call$0.02
Success—
StatusUnknown
How this service works
Maximum drawdown of a price or return series you supply, with peak, trough and recovery indices or dates.
Output
Returns a structured object with the maximum drawdown magnitude, plus peak, trough, and recovery objects each containing an index, optional ISO date, and price/return level. Also includes a summary string, verdict, inputKind, indexBase, and optional disclaimer or degraded flag.
Example use cases
Equity portfolio drawdown audit
“Here are the monthly NAV levels for my equity fund over the last three years: [1000, 1050, 1020, 980, 910, 930, 970, 1010, 1060, 1090, 1040, 1000, 1080]. Can you compute the maximum drawdown and tell me when the peak and trough occurred? Use periodsPerYear 12.”
Return series worst-loss analysis
“I have a series of daily decimal returns for a hedge fund strategy: [0.005, -0.003, 0.007, -0.02, -0.015, -0.008, 0.004, 0.01]. What was the maximum drawdown, and what were the peak and trough indices?”
Backtested strategy risk review
“For these weekly returns (in percent) from my backtested strategy — [1.2, -0.5, 2.1, -3.4, -2.0, 0.8, 1.5, 2.3, -1.1] — calculate the max drawdown using percent units and 52 periods per year, so I can assess the worst losing streak.”
Technical details
Endpoint
GEThttps://portfolio-stats.x402tookit.com/max-drawdown?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a precise maximum drawdown calculation with clearly labeled peak, trough, and recovery points — especially when you have dates to attach to those events. It is purpose-built for drawdown analysis rather than being one metric among many in a broader summary. Prefer it over the equity-curve summary endpoint when drawdown detail (not a full suite of metrics) is the primary need, and when recovery date identification matters.
Side effects
- Missing required prices or returns parameter — returns error asking for input series
- Both prices and returns supplied simultaneously — API expects one or the other
- Malformed price/return array (non-numeric values) — returns parsing error
- Dates array length mismatch with prices length — labeling fails or is ignored
- Series too long (over 1000 points) — may be rejected or truncated
- No drawdown possible (monotonically increasing series) — returns zero drawdown with matching peak and trough at end
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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