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Delx Devig Two-Way
x402
Delx Devig Two-Way 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).
Removes the overround (vig) from a two-outcome market, converting raw bookmaker probabilities into fair implied probabilities.
Price / call$0.001
Success—
StatusUnknown
How this service works
De-vig a two-way market into fair probabilities that sum to 1. Call when recovering fair probs from a two-outcome book with overround. Returns fair yes/no probs after proportional de-vig 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 with the devigged fair probabilities for both outcomes (p_yes and p_no that sum to 1.0), the original schema identifier, and the overround (vig amount) extracted from the raw input probabilities.
Example use cases
Sports betting edge calculator
“I have a two-way sports market where the book implies p_yes = 0.52 and p_no = 0.53. Remove the overround and tell me the fair probability for each side so I can see if there's an edge.”
Prediction market fair price check
“On this binary prediction market the prices are p_yes = 0.6 and p_no = 0.45. Devig those and show me the true implied probability for yes and no.”
Bookmaker margin analysis
“Can you calculate how much vig the bookmaker is charging? The raw odds imply p_yes = 0.56 and p_no = 0.56 on a coin-flip style event.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/devig-two-wayWhen to prefer
Use this endpoint when you have a two-outcome binary market (yes/no, home/away, over/under) and need to strip the bookmaker margin to find fair implied probabilities. Prefer this over manual calculation when you want a consistent, schema-versioned result that also returns the overround explicitly. For markets with more than two outcomes, look for a multi-way devig endpoint instead.
Side effects
- Missing required input: if p_yes or p_no is omitted the request will fail with a validation error
- Invalid probability values: non-numeric or out-of-range inputs (e.g. negative numbers) may return an error
- Zero inputs: p_yes or p_no equal to 0 will cause division errors in the devig calculation
- Sum less than 1: if p_yes + p_no < 1 the overround would be negative, which is an unusual edge case
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| p_no | number | Input field: p no. |
| p_yes | number | Input field: p yes. |
Output
Schema · Response
{
"type": "json",
"example": {
"p_no": 0.5,
"p_yes": 0.5,
"schema": "delx/util-devig-two-way/v1",
"overround": 0.1000000000000001
}
}Tags
x402
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