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Delx Fractional Odds to Probability Converter
x402
Delx Fractional Odds to Probability Converter 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).
Converts fractional odds (numerator/denominator) into implied probability and decimal odds
Price / call$0.001
Success—
StatusUnknown
How this service works
Convert fractional odds (num/den) into implied probability. Call when UK-style fractional books into probability space. Returns implied probability from fractional odds 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 JSON object containing the original numerator and denominator, the implied probability as a float (e.g. 0.2857), and the equivalent decimal odds (e.g. 3.5).
Example use cases
Sports Betting Probability Analysis
“I've got horse racing fractional odds of 7 to 4 — can you convert that to an implied probability and decimal odds so I can compare it with my model?”
Arbitrage Opportunity Detection
“Convert these fractional odds of 11 to 5 into implied probability so I can check if there's an arbitrage gap between bookmakers.”
Odds Format Normalization for Dashboard
“I'm building a betting dashboard and need to normalize fractional odds of 3 to 1 into a probability and decimal odds value for display.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/odds-fractional-to-probWhen to prefer
Use this endpoint when you need a fast, deterministic conversion from fractional odds (common in UK/Irish horse racing and traditional bookmaking) to implied probability and decimal odds. Prefer it over manual calculation in agent pipelines to avoid floating-point errors and to maintain a consistent schema-versioned output.
Side effects
- Missing num or den fields returns a validation error
- Denominator of zero may cause division-by-zero error or bad response
- Non-integer inputs may fail schema validation
- Negative values may produce nonsensical probability outputs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| den | integer | Input field: den. |
| num | integer | Input field: num. |
Output
Schema · Response
{
"type": "json",
"example": {
"den": 2,
"num": 5,
"prob": 0.2857142857142857,
"schema": "delx/util-odds-fractional-to-prob/v1",
"decimal_odds": 3.5
}
}Tags
x402
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