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Vextorium Polymarket Market Detail
x402
Vextorium Polymarket Market Detail is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-29).
Returns detailed market data for a single Polymarket prediction market by slug, including question, resolution rules, outcome probabilities, best bid/ask, last price, volume, liquidity, and dates.
Price / call$0.004
Success—
StatusUnknown
How this service works
Detail of one Polymarket market by slug or id: question, resolution rules and source, outcome probabilities, best bid/ask, last price, volume, liquidity and dates.
Output
A JSON object containing: market id and slug, question text, description/resolution rules, resolution source, open status, start and close dates, outcome array with option names and probability percentages, best ask (mejor_venta) and best bid (mejor_compra) prices, last price, 24h price change, 24h USD volume, total USD volume, liquidity in USD, CLOB token ids, and a link to the Polymarket page.
Example use cases
Real-time election odds tracker
“What are the current Yes/No probabilities and last traded price on the Polymarket market 'will-donald-trump-win-the-2024-presidential-election'? I also need the 24h volume and liquidity.”
Trading bot market depth check
“Before placing a trade, fetch me the best bid and best ask for the Polymarket market with slug 'will-the-fed-cut-rates-in-september-2025' so I can see the current spread and liquidity.”
Resolution rules research
“I want to understand how the Polymarket market 'will-bitcoin-reach-100k-in-2025' will be resolved — can you pull the full question description, resolution source, and close date for that slug?”
Technical details
Endpoint
POSThttps://api.vextorium.com/polymarket-mercado-pago?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need comprehensive single-market data from Polymarket including both order book (bid/ask) and aggregate stats (volume, liquidity, probabilities) in one call. Prefer this over generic DeFi endpoints when the use case is prediction market research, event probability monitoring, or trading intelligence on Polymarket specifically. Ideal when you have a known market slug and need structured, parsed data without scraping Polymarket directly.
Side effects
- Invalid or unknown slug returns null or empty response
- Market not found if slug is misspelled or outdated
- mejor_compra (best bid) may be null if no bids exist
- fuente_resolucion (resolution source) may be null for some markets
- cambio_24h (24h change) may be null for low-activity markets
- Network timeout if Polymarket API is slow or unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| slug | string |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "559687",
"slug": "will-oprah-winfrey-win-the-2028-democratic-presidential-nomination",
"cierre": "2028-11-08T04:59:00Z",
"enlace": "https://polymarket.com/market/will-oprah-winfrey-win-the-2028-democratic-presidential-nomination",
"inicio": "2025-07-11T18:36:32.333Z",
"abierto": true,
"pregunta": "Will Oprah Winfrey win the 2028 Democratic presidential nomination?",
"cambio_24h": null,
"resultados": [
{
"opcion": "Yes",
"probabilidad_pct": 0.05
},
{
"opcion": "No",
"probabilidad_pct": 99.95
}
],
"descripcion": "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…",
"mejor_venta": 0.001,
"tokens_clob": [
"2213957649161627793381994368131485505647723208738124952452819345058597751695",
"44046525152074436753629616217525652949736205933417533647338274649282385796755"
],
"liquidez_usd": 2887065,
"mejor_compra": null,
"ultimo_precio": 0.001,
"volumen_24h_usd": 1050,
"fuente_resolucion": null,
"volumen_total_usd": 54432527
}
}Tags
x402
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