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PureSignal402 Confidence Signal API
x402
PureSignal402 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 2026-09-15).
Returns live prediction-market signals (from Kalshi and Polymarket) that exceed a configurable confidence threshold, filtered by asset, category, platform, and liquidity.
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 list of signals, each with a market question, platform (kalshi or polymarket), yes/no direction, confidence score, mid-price, seconds until settlement, 24h volume, liquidity in dollars, asset tag, and category. Also includes a total count and poll timestamp.
Example use cases
Example prompt
“Pull the latest crypto prediction market signals from Kalshi and Polymarket where confidence is at least 90%, liquidity is over $5,000, and markets are closing within the next 30 minutes.”
Technical details
Endpoint
GEThttps://puresignal402.xyz/v1/liveWhen to prefer
Use this endpoint when you need live, pre-filtered, high-confidence prediction market signals across multiple platforms (Kalshi and Polymarket) without having to aggregate or score them yourself. Prefer it over raw market feeds when you want only actionable, high-signal data above a confidence threshold and optionally with liquidity filtering. It is especially useful for agents doing real-time monitoring, alerting, or decision support around prediction market outcomes.
Side effects
- Payment not provided or x402 payment rejected — endpoint returns 402 Payment Required
- Invalid asset or category value — returns empty signal list or 400 error
- min_confidence set above 1.0 or below 0.0 — validation error
- within_minutes set to 0 or negative — may return empty or error
- No signals currently meet the filters — returns count:0 with empty signals array
- Network timeout if prediction market data sources are temporarily unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| asset | string | |
| category | string | |
| platform | string | |
| min_confidence | number | Default 0.85 (vs 0.88 on /v1/signals). |
| within_minutes | integer | Time window in minutes. Default 240 (4h). Use 30 for ultra-fresh closing-soon feed. |
| min_liquidity_dollars | number |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| countrequired | integer | |
| signalsrequired | array | |
| poll_timestamprequired | string |
Tags
x402
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