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Kelly Criterion Binary Fraction Calculator
x402
Kelly Criterion Binary Fraction Calculator is a paid API for AI agents from handel.halowerk.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-17).
Computes the binary Kelly fraction (optimal bet size as a proportion of capital) given a win probability and payoff ratio, with no market data or brokerage access.
Price / call$0.002
Success—
StatusUnknown
How this service works
Binärer Kelly-Anteil als Modellzahl. Unbegrenztes binäres Modell, konstante unabhängige Treffer; negative Ergebnisse werden nicht zu einem Einsatzvorschlag umgedeutet. Alle Zahlen, Kurse und Vorgaben liefert der Aufrufer. Keine eigenen Kursdaten, kein Brokerzugriff, keine Ausführung. Rechenwerkzeug, keine Anlageberatung, keine Empfehlung.
Output
A numeric Kelly fraction (between 0 and 1, or negative if the bet is unfavorable, returned as-is without reinterpretation) representing the theoretically optimal proportion of capital to allocate to a single binary bet given the supplied win probability and payoff ratio.
Example use cases
Optimal forex position sizing
“I have a forex strategy with a 58% win rate and each winning trade returns 1.5 times the risk. What Kelly fraction should I be sizing my positions at?”
Sports betting stake calculation
“I think there's a 62% chance of this match outcome happening, and the bookmaker is offering 2.1 to 1. What does the Kelly criterion say my stake fraction should be?”
Algorithmic trading risk calibration
“My backtested algo has a 52% win probability and a payoff ratio of 2.4. Give me the Kelly fraction so I can set my position size limits.”
Technical details
Endpoint
POSThttps://handel.halowerk.com/v1/rechner/kelly?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a pure, stateless computation of the binary Kelly fraction with no side effects, no external data fetching, and no broker integration. Prefer it over general-purpose formula evaluators when you want a dedicated, validated implementation of Kelly criterion math. Not suitable if you need continuous Kelly variants, fractional Kelly presets, or market data lookups.
Side effects
- win_probability outside [0,1] — validation error
- payoff_ratio below 1e-12 or above 1e12 — validation error
- missing required fields — request rejected
- negative Kelly fraction returned as-is (not reinterpreted as zero) — callers must handle edge cases themselves
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| payoff_ratio | number | |
| win_probability | number |
Tags
x402
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