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Live Prediction-Market Surface (Polymarket)
x402
Live Prediction-Market Surface (Polymarket) is a paid API for AI agents from x402.shizu.me, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns all liquid Polymarket prediction markets above a configurable volume floor, with live Yes probabilities, edge scores, 24h volume, and liquidity — designed for continuous trading loops.
Price / call$0.02
Success—
StatusUnknown
How this service works
The live TRADEABLE prediction-market surface, normalised for polling bots. Every liquid Polymarket market above a 24h-volume floor, each with its Yes probability, `edge` (min(yes,1-yes) — 0=resolved, 0.5=coin-flip), 24h volume, and liquidity. Query: min_volume (USD floor, default 1000), uncertain_only (true drops near-resolved), sort (volume|edge|liquidity), limit (1-100). Prices move — poll it; a cached copy is stale. Built for continuous trading loops, not one-shot lookups.
Output
A ranked list of Polymarket markets each containing: market title, current Yes probability, edge score (min(yes, 1-yes) where 0=resolved and 0.5=coin-flip), 24h USD trading volume, and available liquidity — fresh live data, not cached.
Example use cases
Continuous trading loop for a bot
“Every 60 seconds, fetch the top 50 Polymarket markets by volume with at least $1000 in 24h volume and only show me the uncertain ones — I need fresh prices for my trading algo.”
Screening for mispriced markets
“Show me the 20 Polymarket markets closest to a coin-flip right now — sorted by edge, minimum $5000 in 24h volume — so I can spot any that look mispriced.”
Liquidity dashboard for active traders
“Give me the current Polymarket markets sorted by liquidity, top 30, with no volume floor — I want to see everything liquid regardless of how certain the outcome looks.”
Technical details
Endpoint
GEThttps://x402.shizu.me/pmscanWhen to prefer
Choose this endpoint when you need a comprehensive, filtered, and sorted view of the entire tradeable Polymarket surface in a single call — especially for trading bots that need to scan all liquid markets at once rather than look up a specific market. Prefer over the sibling 'Prediction Market Odds' endpoint when you need edge scoring, volume/liquidity filtering, and are building a continuous polling loop rather than a one-shot odds check.
Side effects
- Polymarket API unavailable — returns upstream error
- min_volume or limit out of accepted range — returns validation error
- uncertain_only with very high min_volume may return empty list if no markets qualify
- Stale cache risk if polling interval is too long — data is only fresh at call time
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 40,
"venue": "polymarket",
"markets": [
{
"url": "https://polymarket.com/event/...",
"yes": 0.34,
"edge": 0.34,
"ends": "2026-12-31T00:00:00Z",
"question": "Will X happen by 2027?",
"liquidity": 455381,
"volume_24h": 254637
}
],
"scanned": 399
}
}Tags
x402
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