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Vextorium Polymarket Events
x402
Vextorium Polymarket Events is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).
Fetches current Polymarket prediction market events with market options, probabilities, and trading volumes
Price / call$0.004
Success—
StatusUnknown
How this service works
Polymarket events with all their markets: elections, Fed decisions, sports, crypto... Each event with the probability of every option (candidate, rate range, team), volume and close date; top by volume or matching a search.
Output
Returns a list of Polymarket prediction market events, each with the event name, URL slug, closing date, link to Polymarket, and an array of individual market options showing the option label, slug, USD trading volume, and implied probability (as a yes percentage). Also includes total volume, 24-hour volume, number of markets per event, and a disclaimer that probabilities are market-implied, not guaranteed predictions.
Example use cases
Election odds research
“What are the current Polymarket odds for the 2026 Brazil presidential election? I want to see which candidates are leading and what percentage chance the market gives each of them.”
Fed rate decision monitoring
“Pull the latest Polymarket prediction market data on the Fed's next interest rate decision — I want to see the probability of a rate cut, hold, or hike and how much volume has traded.”
Crypto event discovery
“Search Polymarket for any active prediction markets related to crypto or Bitcoin and give me the top 5 by trading volume with their current probabilities.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/polymarket-events?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need live Polymarket prediction market data — event probabilities, trading volumes, and market options — especially for political, economic, or crypto events. Prefer this over scraping Polymarket directly, or when you need structured JSON output suitable for downstream agent reasoning about crowd-sourced event probabilities.
Side effects
- No events found for a very narrow or obscure search term
- Search query returns unrelated events due to loose text matching
- Stale probability data if Polymarket feed is delayed
- Rate limit or payment failure (USDC x402 payment rejected)
- Empty result set if search parameter matches nothing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Probabilities implied by the market price; they are not guaranteed predictions.",
"events": [
{
"link": "https://polymarket.com/event/brazil-presidential-election",
"slug": "brazil-presidential-election",
"close": "2026-10-05T03:59:00Z",
"event": "Brazil Presidential Election",
"markets": [
{
"slug": "will-flvio-bolsonaro-win-the-2026-brazilian-presidential-election",
"option": "Flávio Bolsonaro",
"volume_usd": 13676392,
"probability_yes_pct": 56.95
},
{
"slug": "will-luiz-incio-lula-da-silva-win-the-2026-brazilian-presidential-election",
"option": "Luiz Inácio Lula da Silva",
"volume_usd": 14053722,
"probability_yes_pct": 43.5
}
],
"num_markets": 32,
"volume_24h_usd": 2719744,
"total_volume_usd": 162530742
},
{
"link": "https://polymarket.com/event/fed-decision-in-october-20260617190323537",
"slug": "fed-decision-in-october-20260617190323537",
"close": "2026-10-29T03:59:00Z",
"event": "Fed Decision in October?",
"markets": [
{
"slug": "will-there-be-no-change-in-fed-interest-rates-after-the-october-2026-meeting-20260617190324031",
"option": "No change",
"volume_usd": 7162734,
"probability_yes_pct": 82.5
},
{
"slug": "will-the-fed-increase-interest-rates-by-25-bps-after-the-october-2026-meeting-20260617190324032",
"option": "25 bps increase",
"volume_usd": 6115654,
"probability_yes_pct": 17.5
}
],
"num_markets": 5,
"volume_24h_usd": 2232441,
"total_volume_usd": 24244124
}
],
"search": null,
"source": "Polymarket"
}
}Tags
x402
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