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SiteCheck Polymarket Prediction Markets
x402
SiteCheck Polymarket Prediction Markets is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-23).
Searches Polymarket prediction markets by keyword or slug and returns current odds, implied probabilities, volume, and liquidity for matching markets.
Price / call$0.002
Success—
StatusUnknown
How this service works
Active Polymarket prediction markets matching search words, or one market by slug: the question, each outcome with its price as an implied probability, volume, liquidity, end date and link. Closed markets are left out. Source: Polymarket Gamma API. Information only, not financial advice.
Output
Returns a list of matching Polymarket markets, each with: the market question, a direct link, the slug, the end date, per-outcome prices and implied probability percentages, total USD trading volume, and USD liquidity. Also includes the data source URL and a timestamp for when the data was checked.
Example use cases
Check crypto price prediction odds
“Look up Polymarket prediction markets about Ethereum reaching $5,000 and tell me what the current implied probability is, plus the trading volume and liquidity.”
Track election outcome probabilities
“Search Polymarket for markets related to the 2026 US midterm elections and give me the top 5 results with their current odds and end dates.”
Fetch specific market by slug
“Pull up the Polymarket market with the slug 'trump-wins-2024-presidential-election' and show me the full outcome breakdown including prices and implied probabilities.”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/prediction/polymarket?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time Polymarket prediction market data — specifically odds, implied probabilities, volume, and liquidity — by searching keywords or fetching a specific market by slug. Prefer this over generic web search when you need structured, machine-readable market data from Polymarket rather than scraped text. Ideal for agents that need to compare market-implied probabilities or track sentiment on specific events.
Side effects
- No markets found for the given query or slug returns an empty markets array
- Invalid or non-existent slug returns no results
- Network timeout from upstream Polymarket gamma API
- Rate limit or upstream API unavailability causing 5xx errors
- Limit parameter out of range (must be 1–20) may return default or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"query": {
"q": "bitcoin",
"slug": null
},
"source": "https://gamma-api.polymarket.com (public-search)",
"markets": [
{
"link": "https://polymarket.com/event/bitcoin-above-on-october-14-2026",
"slug": "bitcoin-above-74k-on-october-14-2026",
"endDate": "2026-10-14T16:00:00Z",
"outcomes": [
{
"price": 0.9995,
"outcome": "Yes",
"impliedProbabilityPct": 100
},
{
"price": 0.0005,
"outcome": "No",
"impliedProbabilityPct": 0.1
}
],
"question": "Will the price of Bitcoin be above $74,000 on October 14?",
"volumeUsd": 27262,
"liquidityUsd": 138901
},
{
"link": "https://polymarket.com/event/bitcoin-above-on-october-14-2026",
"slug": "bitcoin-above-76k-on-october-14-2026",
"endDate": "2026-10-14T16:00:00Z",
"outcomes": [
{
"price": 0.9995,
"outcome": "Yes",
"impliedProbabilityPct": 100
},
{
"price": 0.0005,
"outcome": "No",
"impliedProbabilityPct": 0.1
}
],
"question": "Will the price of Bitcoin be above $76,000 on October 14?",
"volumeUsd": 67080,
"liquidityUsd": 40762
}
],
"checkedAt": "2026-10-14T07:00:23.176Z",
"disclaimer": "Information only, not financial advice."
}
}Tags
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