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Confidence Signal API
x402
Confidence Signal API is a paid API for AI agents from puresignal402.xyz, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns high-confidence prediction-market trading signals from Kalshi and Polymarket, filtered by asset, category, confidence threshold, and time-to-settlement.
Price / call$0.005
Success—
StatusUnknown
How this service works
Prediction-market signals above a confidence threshold. x402-gated.
Output
A JSON object containing a count of matching signals, a poll timestamp, and an array of signal objects. Each signal includes the market question, platform (kalshi/polymarket), direction (yes/no), confidence score (0-1), mid price (0-1), category, associated asset if any, seconds until settlement, 24h volume, liquidity in dollars, and the signal timestamp.
Example use cases
Example prompt
“Pull me the highest-confidence crypto prediction market signals from both Kalshi and Polymarket settling within the next 6 hours — filter to confidence above 0.85 and show me ETH signals specifically.”
Technical details
Endpoint
GEThttps://puresignal402.xyz/v1/signalsWhen to prefer
Use this endpoint when you need filtered, high-confidence prediction-market signals aggregated from Kalshi and Polymarket in a single call, especially when you want to act on directional market sentiment with a quantified confidence score and settlement horizon. Prefer this over scraping individual prediction market platforms directly or building your own signal filter.
Side effects
- Payment not provided or insufficient — x402 payment gate blocks access, returns 402 Payment Required
- Invalid asset value — must be BTC, ETH, SOL, or 'all'
- Invalid category value — must be one of the defined enums or 'all'
- Invalid platform value — must be 'kalshi', 'polymarket', or 'all'
- No signals match the given filters — returns count 0 with empty signals array
- min_confidence set too high — no signals meet threshold, empty result
- Network or upstream data source unavailability — may return 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| asset | string | BTC, ETH, SOL, or 'all' |
| category | string | crypto, macro, politics, weather, sports, tech, all |
| platform | string | kalshi, polymarket, or 'all' |
| min_confidence | number | |
| max_ttl_seconds | string | Drop signals settling further out than this. Default 86400 (24h). |
| min_ttl_seconds | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| countrequired | integer | |
| signalsrequired | array | |
| poll_timestamprequired | string |
Tags
x402
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