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Delx Brier Score
x402
Delx Brier Score 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).
Computes the Brier score for a probabilistic forecast given a predicted probability and a binary outcome
Price / call$0.001
Success—
StatusUnknown
How this service works
Brier score for a probabilistic forecast vs binary outcome. Call when scoring prediction calibration on resolved markets. Returns brier score in [0,1] 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 input probability, the binary outcome, and the computed Brier score (a float between 0 and 1 where lower is better), along with a schema identifier string.
Example use cases
Evaluating weather model calibration
“I predicted a 0.8 probability of rain today and it actually rained — what's the Brier score for that forecast?”
Scoring ML classifier predictions
“My binary classifier output a probability of 0.3 for this sample but the true label was 1. Can you compute the Brier score to see how bad that prediction was?”
Benchmarking prediction market accuracy
“I made a forecast with 0.55 probability that an event would happen, and it didn't. Give me the Brier score so I can track my prediction accuracy over time.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/brier-scoreWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call Brier score computation without setting up local statistical libraries. Ideal for agents that periodically evaluate forecast quality inline, score individual predictions in real time, or need a stateless, dependency-free scoring step in a larger pipeline.
Side effects
- Missing required 'prob' field returns a validation error
- 'prob' value outside [0,1] range may produce mathematically invalid results
- 'outcome' must be 0 or 1; other integer values may cause unexpected scoring
- Malformed request body returns a 400 or 422 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| prob | number | Input field: prob. |
| outcome | integer | Input field: outcome. |
Output
Schema · Response
{
"type": "json",
"example": {
"prob": 0.7,
"brier": 0.09000000000000002,
"schema": "delx/util-brier-score/v1",
"outcome": 1
}
}Tags
x402
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