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Vealth Kelly Sizer — Half-Kelly Position Sizing
x402
Vealth Kelly Sizer — Half-Kelly Position Sizing is a paid API for AI agents from vealth.net, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Computes Half-Kelly optimal position size given edge, bankroll, and confidence across 12+ strategy normalizers
Price / call$0.001
Success—
StatusUnknown
How this service works
kelly-sizer (CDP-settled mirror) — Half-Kelly position sizing with 12+ strategy normalizers
Output
Returns a Half-Kelly-adjusted position size recommendation, normalized across 12+ strategy types, indicating the optimal fraction or dollar amount to deploy given the supplied edge, bankroll, and confidence level.
Example use cases
Size a sports bet with confidence
“I want to bet on an upcoming game where I estimate my edge is about 12% and I'm 80% confident in that edge. My current bankroll is $8,000 — how much should I put on this bet using half-Kelly sizing?”
Allocate capital across quant strategies
“I'm running three different quant strategies and need to figure out position sizes for each. My bankroll is $200,000, the edges are 0.05, 0.09, and 0.15 respectively, and my confidence levels are 70%, 85%, and 60% — can you use half-Kelly with normalization across all three to tell me how much to deploy in each?”
Right-size a volatile crypto trade
“I'm looking at a crypto trade where I think I have about a 10% edge but I'm only 65% sure about my model given how noisy the market is. My total trading bankroll is $25,000 — what's the half-Kelly optimal amount I should risk on this position?”
Technical details
Endpoint
POSThttps://vealth.net/.well-known/vealth/cdp/kelly-sizerWhen to prefer
Choose this endpoint when you need a principled, Half-Kelly-normalized position size that accounts for both raw edge and confidence uncertainty, especially across diverse strategy types. Prefer it over a plain Kelly calculator when managing a multi-strategy portfolio or when you want built-in normalization across 12+ strategy archetypes.
Side effects
- Missing required field (edge, bankroll, or confidence) returns a 400-level error
- Edge value outside valid range (e.g. negative or >1) may return validation error
- Payment not processed or insufficient USDC balance causes x402 payment failure
- Confidence value out of [0,1] range may cause normalization error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| edge | number | |
| bankroll | number | |
| confidence | number |
Tags
x402
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