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AgentUtility Polymarket Markets Search API
x402
AgentUtility Polymarket Markets Search API is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Search and filter Polymarket prediction market listings by query, category, tag, liquidity, and sort order, returning questions, outcomes, implied prices, volume, and URLs.
Price / call$0.005
Success—
StatusUnknown
How this service works
Markets API / Polymarket markets / prediction markets list and search. Exact buyer-demand slug backed by Polymarket gamma-api public market data. Filter active/closed markets by query, category, tag, liquidity, sort order, limit, and offset. Returns questions, slugs, outcomes, implied prices, liquidity, volume, and URLs. Data-only; no trading or order routing.
Output
Returns a list of prediction market objects, each containing the market question, slug, possible outcomes, implied prices per outcome, current liquidity, total volume, and a direct URL to the market on Polymarket. No trading or order execution is included.
Example use cases
Election probability research
“Find the top 5 most liquid active prediction markets on Polymarket related to the 2024 US presidential election, and show me the current implied probabilities for each outcome.”
Crypto event market discovery
“Search Polymarket for any open prediction markets about Bitcoin ETF approvals or SEC crypto rulings, sorted by volume, and give me the market questions and current prices.”
Crowd sentiment on AI regulation
“Look up active Polymarket prediction markets tagged with AI or artificial intelligence, show me the top 10 by liquidity, and include the implied yes/no prices and market URLs.”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/marketsWhen to prefer
Choose this endpoint when you need structured, filterable access to Polymarket prediction market data including implied probabilities and liquidity metrics. Prefer it over direct Polymarket web scraping when you need clean JSON output with sorting and filtering. Use it when an agent needs to inform a user about crowd-sourced event probabilities without executing any trades.
Side effects
- No markets found matching the query or filters — returns empty list
- Invalid category or tag value — may return empty results or error
- Offset/limit out of range — returns empty results
- Polymarket gamma-api upstream outage — service unavailable error
- Malformed POST body — returns 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 20,
"markets": [
{
"question": "Will X happen?",
"outcome_prices": [
0.42,
0.58
]
}
],
"attribution": "Data: Polymarket gamma-api. https://polymarket.com"
}
}Tags
x402
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