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x402 Polymarket Markets
x402
x402 Polymarket Markets is a paid API for AI agents from x402tap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Search or list active Polymarket prediction markets, ranked by 24-hour trading volume
Price / call$0.01
Success—
StatusUnknown
How this service works
Search or list active Polymarket prediction markets, ranked by 24h volume
Output
Returns a JSON object with a count of matched markets and an array of market objects, each including the market question, slug, active status, end date, possible outcomes, current outcome prices (probabilities), 24-hour volume, total volume, and liquidity.
Example use cases
Monitor election prediction odds
“Search Polymarket for any active prediction markets about the US election and show me the current yes/no prices and 24-hour volume for the top 10 results.”
Track crypto regulatory markets
“Find me active Polymarket markets related to crypto regulation — I want to see the current outcome prices and how much volume they've done in the last 24 hours, up to 15 markets.”
Discover top trending prediction markets
“What are the 20 most actively traded Polymarket markets right now? Just list them by 24-hour volume so I can see what topics people are betting on most.”
Technical details
Endpoint
GEThttps://x402tap.com/api/polymarket-markets?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to discover or search across active Polymarket prediction markets by topic, ranked by recent trading activity. It is best when you want a broad overview or filtered list rather than deep detail on a single market. Prefer this over exchange APIs or news sources when you want quantified crowd-probability estimates on future events. It complements Kalshi endpoints when you want Polymarket-specific liquidity and pricing data.
Side effects
- No markets match the keyword query — returns empty markets array
- limit parameter out of range (must be 1-50) — may return error or default
- Payment not included or insufficient — 402 Payment Required response
- Polymarket data source temporarily unavailable — upstream error
- Invalid query parameter type — schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 1,
"query": "election",
"markets": [
{
"slug": "example-market",
"active": true,
"endDate": "2026-12-31T00:00:00Z",
"outcomes": [
"Yes",
"No"
],
"question": "Example prediction market?",
"liquidity": 45678.9,
"volume24hr": 12345.67,
"volumeTotal": 987654.32,
"outcomePrices": [
0.62,
0.38
]
}
]
}
}Tags
x402
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