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Seerium Ending-Soon Prediction Markets API
x402
Seerium Ending-Soon Prediction Markets API is a paid API for AI agents from api.seerium.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Returns active prediction markets from Polymarket, Kalshi, and Gemini that are resolving soon, with close times, bid/ask prices, volume, liquidity, and direct market links.
Price / call$0.001
Success—
StatusUnknown
How this service works
Crypto and prediction market intelligence through x402.
Output
A list of active prediction markets resolving within the specified time window, each including market name, close time, bid price, ask price, volume, liquidity, venue (Polymarket/Kalshi/Gemini), and a direct market link.
Example use cases
Example prompt
“Show me the top 30 prediction markets across Polymarket, Kalshi, and Gemini that are resolving within the next 12 hours — include the bid/ask prices, volume, and links.”
Technical details
Endpoint
GEThttps://api.seerium.xyz/v1/prediction/ending-soonWhen to prefer
Use this endpoint when you need a real-time snapshot of prediction markets about to expire across Polymarket, Kalshi, and/or Gemini, especially when you want to act on near-term opportunities or monitor resolution windows. Prefer this over general market search endpoints when time-to-resolution is the primary filter criterion.
Side effects
- Invalid 'hours' value outside 1–168 range returns validation error
- Invalid 'source' enum value returns bad request
- 'limit' outside 1–100 range returns validation error
- No markets found for the given filter returns empty list
- Upstream venue data unavailable returns partial or error response
- Payment not included or insufficient USDC triggers 402 response
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"hours": 24,
"limit": 30,
"source": "all"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"_truncated": true,
"_originalSize": 22960
}Schema · Response
{
"type": "json",
"example": {
"data": {
"rows": [
{
"noAsk": 0.58,
"noBid": 0.56,
"active": true,
"closed": false,
"source": "kalshi",
"volume": 193200,
"yesAsk": 0.44,
"yesBid": 0.42,
"noPrice": 0.57,
"archived": false,
"question": "Will Bitcoin be above $100,000 on May 31, 2026?",
"yesPrice": 0.43,
"eventSlug": "bitcoin-price-may-31-2026",
"lastPrice": 0.43,
"liquidity": 12800,
"marketUrl": "https://kalshi.com/markets/KXBTC-26MAY31-B100000",
"volume24h": 28450,
"endDateIso": "2026-05-31T20:00:00.000Z",
"eventTitle": "Bitcoin price on May 31, 2026",
"indicative": true,
"marketSlug": "kxbtc-26may31-b100000",
"seriesSlug": "bitcoin",
"conditionId": "KXBTC-26MAY31-B100000",
"minTickSize": 0.01,
"marketTicker": "KXBTC-26MAY31-B100000",
"minOrderSize": 1,
"seriesTicker": "KXBTC",
"acceptingOrders": true,
"minutesUntilEnd": 240,
"sourceUpdatedAt": "2026-05-31T15:56:00.000Z"
}
],
"criteria": {
"hours": 24,
"limit": 25,
"source": "all"
},
"returned": 1,
"warnings": [],
"timestamp": 1760000000000,
"sourceCounts": {
"gemini": 3,
"kalshi": 4,
"polymarket": 5
},
"sourceUpdatedAt": {
"gemini": "2026-05-31T15:54:30.000Z",
"kalshi": "2026-05-31T15:56:00.000Z",
"polymarket": "2026-05-31T15:55:00.000Z"
},
"totalCandidates": 12
},
"meta": {
"requestId": "req_example_123",
"updatedAt": "2026-03-25T11:59:30.000Z",
"freshnessMs": 30000,
"generatedAt": "2026-03-25T12:00:00.000Z"
},
"product": {
"id": "prediction-ending-soon",
"name": "Ending Soon Prediction Markets API",
"path": "/v1/prediction/ending-soon",
"price": "$0.1000",
"method": "GET",
"accepts": [
{
"payTo": "0x81832eEDe3a4ad96CB3D7cA09977636D912fd3D5",
"price": "$0.1000",
"scheme": "exact",
"network": "eip155:8453"
},
{
"payTo": "2h752kAbb9z1jpdSzqMEYg9JHv6TPJ6T2BfAJMyjLFtZ",
"price": "$0.1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
}
],
"networks": [
"eip155:8453",
"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
]
},
"service": "seerium-x402-api"
}
}Tags
x402
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