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Arkham x402 – Polymarket Events
x402
Arkham x402 – Polymarket Events is a paid API for AI agents from api.arkm.com, paid per call via x402, $0.6/call, status unknown (last checked 2026-09-14).
Fetches a paginated list of Polymarket prediction market events with pricing, volume, and resolution data via pay-per-request.
Price / call$0.6
Success—
StatusUnknown
How this service works
Get Arkham Polymarket events. $0.60 per call.
Output
Returns a JSON object containing a paginated list of Polymarket events, each with fields including event ID, slug, title, active/closed/ended/live flags, end date, description, resolution criteria, yes price, 24h USDC volume, 24h price change, market count, and image URLs. Also includes total count and offset for pagination.
Example use cases
Monitor trending political prediction markets
“Show me the Polymarket events with the highest 24-hour trading volume right now — I want to see the yes prices and how much they've moved in the last day.”
Research open markets before an election
“Get me a list of active, unresolved Polymarket events related to current political topics, including their yes prices and end dates, so I can see what's being bet on most.”
Track a specific market's live data
“Fetch the latest Polymarket event data for the Trump FIFA World Cup Champions Photo market — give me the current yes price, 24h volume, and whether it's still open.”
Technical details
Endpoint
POSThttps://api.arkm.com/x402/polymarket/eventsWhen to prefer
Choose this endpoint when you need structured, programmatic access to Polymarket prediction market events — especially when you want real-time yes/no prices, 24h volume, and event metadata at scale. Prefer this over scraping Polymarket directly or using public frontends when you need clean JSON, pagination, and reliable data freshness. The x402 pay-per-request model makes it cost-effective for on-demand queries without a subscription commitment.
Side effects
- Payment failure or insufficient USDC balance (x402 payment required per call)
- Invalid or missing API key returns authentication error
- Malformed request body returns 400 error
- Offset or limit out of range returns empty results or error
- Downstream Polymarket data unavailability causes stale or partial response
- Rate limiting if too many requests issued in rapid succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tag | — | Optional. Filter by event tag. Matches lowercase Polymarket tags case-insensitively. |
| limit | — | Max events to return (1-100). Default: 50. |
| order | — | Sort order: asc or desc. Default: desc. |
| active | — | Optional. Filter to active events — not closed and not ended (true/false). |
| offset | — | Pagination offset. Default: 0. |
| search | — | Optional. Search event titles, market questions, and grouped-market titles. |
| sortBy | — | Optional. Sort field: volume, endDate (resolution eligibility), or createdAt. Default: volume when no tag, endDate when… |
| excludeTag | — | Optional. Exclude events carrying this tag (case-insensitive). |
| groupGames | — | Optional. When true, return one winner event per sporting fixture instead of each related event. Default: false. |
Output
Schema · Response
{
"type": "json",
"example": {
"limit": 50,
"events": [
{
"live": false,
"slug": "will-trump-be-in-the-wc-champions-photo-20260608152527021",
"ended": false,
"title": "Will Trump be in the WC Champions Photo?",
"active": true,
"closed": false,
"endDate": "2026-07-20T03:59:00Z",
"eventId": 572993,
"iconUrl": "https://polymarket-upload.s3.us-east-2.amazonaws.com/will-trump-be-in-the-wc-champions-photo-20260608152527021-eJaeDFLpXz06.jpg",
"imageUrl": "https://polymarket-upload.s3.us-east-2.amazonaws.com/will-trump-be-in-the-wc-champions-photo-20260608152527021-eJaeDFLpXz06.jpg",
"restricted": true,
"description": "This market will resolve to “Yes” if Donald Trump is visibly in the frame for the winning team's official team photo following the 2026 FIFA World Cup Final. Otherwise, this market will resolve to “No”.\n\nIf Trump does not attend the 2026 FIFA World Cup Final, this market will resolve to “No”.\n\nIf the 2026 FIFA World Cup Final is cancelled or postponed beyond August 2, 2026, 11:59 PM ET, this market will resolve to “No”.\n\nThe resolution source for this market will be a consensus of credible reporting.",
"marketCount": 1,
"volume24hUsdc": "5044026.311715",
"marketPreviews": [
{
"outcomes": [
"Yes"
],
"question": "Will Trump be in the WC Champions Photo?",
"resolved": false,
"yesPrice": 0.9975,
"conditionId": "0xc0b7319f73f248310b059c231fb069e64dbd68ca81dd9933728ca192b54c3cc4",
"volume24hUsdc": "5044026.311715",
"yesPriceChange24h": 0.005000000000000115
}
],
"volume24hChangePct": 11.94696504405238
}
],
"offset": 0,
"totalCount": 717583
}
}Tags
x402
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