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Vextorium Polymarket Market Lookup
x402
Vextorium Polymarket Market Lookup is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-18).
Fetches detailed data for a specific Polymarket prediction market by slug, including current prices, probabilities, volume, and liquidity.
Price / call$0.004
Success—
StatusUnknown
How this service works
558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.
Output
Returns a JSON object with the market's unique ID, question text, full description, open/close status, start and close timestamps, outcome probabilities (Yes/No with percentage), last traded price, best sell price, 24h price change, 24h USD volume, total USD volume, liquidity in USD, a link to the Polymarket page, CLOB token IDs, and resolution source.
Example use cases
Check election odds on Polymarket
“What are the current probabilities and last traded price on the Polymarket market for 'will-donald-trump-win-the-2026-midterms'? Is it still open and what's the 24-hour volume?”
Monitor prediction market liquidity
“Pull up the liquidity and total volume for the Polymarket market with slug 'will-the-fed-cut-rates-in-2025' — I want to know if it's liquid enough to trade.”
Research market resolution details
“Get me the full description, resolution source, and current Yes/No probabilities for the Polymarket market 'will-bitcoin-reach-200k-in-2025'.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/polymarket-market?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, machine-readable data for a specific Polymarket prediction market identified by its slug — including current prices, probabilities, volume, and liquidity. Prefer this over scraping the Polymarket website directly. Best for agents that need to monitor, analyze, or report on prediction market outcomes for specific events.
Side effects
- Invalid or non-existent slug returns an error or empty result
- Market may be closed or resolved, returning open: false
- best_buy and change_24h fields may be null for illiquid or inactive markets
- resolution_source may be null if not yet specified by market creator
- Network timeout or upstream Polymarket API unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| slug | string |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "559687",
"link": "https://polymarket.com/market/will-oprah-winfrey-win-the-2028-democratic-presidential-nomination",
"open": true,
"slug": "will-oprah-winfrey-win-the-2028-democratic-presidential-nomination",
"close": "2028-11-08T04:59:00Z",
"start": "2025-07-11T18:36:32.333Z",
"results": [
{
"option": "Yes",
"probability_pct": 0.05
},
{
"option": "No",
"probability_pct": 99.95
}
],
"best_buy": null,
"question": "Will Oprah Winfrey win the 2028 Democratic presidential nomination?",
"best_sell": 0.001,
"change_24h": null,
"last_price": 0.001,
"description": "This market will resolve to “Yes” if the named individual wins and accepts the 2028 nomination of the Democratic Party for U.S. president. Otherwise, this market will resolve to “No”.\n\nThe resolution source for this market will be a consensus of official Democratic Party sources.\n\nAny replacement of…",
"tokens_clob": [
"2213957649161627793381994368131485505647723208738124952452819345058597751695",
"44046525152074436753629616217525652949736205933417533647338274649282385796755"
],
"liquidity_usd": 2887065,
"volume_24h_usd": 1050,
"total_volume_usd": 54432527,
"resolution_source": null
}
}Tags
x402
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