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Prediction Market Search (Polymarket + Kalshi)
x402
Prediction Market Search (Polymarket + Kalshi) is a paid API for AI agents from clink-lithium-vault.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Searches live prediction markets across Polymarket and Kalshi simultaneously, returning ranked results with probabilities, volume, liquidity, and pricing for any topic or question.
Price / call$0.01
Success—
StatusUnknown
How this service works
Prediction market search for AI agents - one query, live markets from Polymarket AND Kalshi ranked by relevance: question, implied probability (YES price), 24h/7d change, bid/ask, volume, liquidity, close date, URL, and the ids you need for /pm/history. Election odds, Fed/rates, crypto price targets, sports, geopolitics, pop culture. ?q=<question or topic>&limit=<1-50>. Want a finished answer with a cross-platform read? /pm/odds $0.02.
Output
A JSON object containing an array of ranked markets from Polymarket and/or Kalshi, each with: market question, platform, URL, implied probability (YES price), 24h and 7d price changes, bid/ask prices, 24h volume, liquidity, close date, and market IDs usable with the /pm/history endpoint. Also includes a summary of source counts per platform.
Example use cases
Election odds research
“Search prediction markets for 'US presidential election 2028' and show me the top 10 results with their current implied probabilities and how they've moved over the last 24 hours.”
Crypto price target markets
“Find prediction markets about Bitcoin hitting $150k and show me the YES prices, bid/ask spreads, and liquidity on both Polymarket and Kalshi — limit it to 8 results.”
Fed rate decision odds
“What are the current prediction market odds for a Fed rate cut at the next FOMC meeting? Search for 'Fed rate cut' and give me the top 5 ranked markets with their probabilities and trading volume.”
Technical details
Endpoint
GEThttps://clink-lithium-vault.fly.dev/pm/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to search across both Polymarket and Kalshi simultaneously with a single query, ranked by relevance. Prefer this over platform-specific APIs when you want cross-platform coverage without managing two separate integrations. For a single synthesized natural-language answer rather than raw market data, use the companion /pm/odds endpoint instead.
Side effects
- No markets found for obscure or niche query — returns empty markets array
- Limit parameter out of range (must be 1-50) — may return error or default
- Stale data if upstream Polymarket or Kalshi APIs are delayed
- Missing q parameter — required field, will return error
- Rate or availability issues on underlying market platforms causing partial results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"markets": [
{
"url": "https://polymarket.com/event/...",
"platform": "polymarket",
"question": "Fed rate cut by September 2026 meeting?",
"change_24h": -0.01,
"volume_24h": 20480,
"probability": 0.05
}
],
"sources": {
"kalshi": {
"count": 4
},
"polymarket": {
"count": 3
}
}
}
}Tags
x402
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