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Prediction Market Odds & Summary
x402
Prediction Market Odds & Summary is a paid API for AI agents from clink-lithium-vault.fly.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).
Given a natural-language question, returns matched Polymarket and Kalshi markets with implied probabilities, 24h/7d price moves, cross-platform gap, 7-day history, and a one-sentence summary.
Price / call$0.02
Success—
StatusUnknown
How this service works
What do the prediction markets say? Pass a question, get a finished read an agent can use directly: the best-matching market on Polymarket and on Kalshi with implied probability and 24h/7d moves, the cross-platform gap in points, a 7-day price history, a one-sentence summary, plus the top matching markets. Forecasting, research grounding, news context, event risk. ?q=<question>. Raw list only: /pm/search $0.01.
Output
A JSON object containing: a one-sentence natural-language summary (e.g. 'Polymarket prices X at 5%, Kalshi at 4%'), a headline object with per-platform implied probabilities and the cross-platform gap in percentage points, a 7-day price history array with timestamps and probabilities, and a list of top matching markets across both platforms.
Example use cases
Election probability cross-platform check
“What are Polymarket and Kalshi currently pricing for a Republican win in the 2026 midterms, and how have the odds shifted over the past week?”
Recession risk research grounding
“I'm writing a macro report — what do prediction markets say about the probability of a US recession in 2025? Give me the best matching markets on both Polymarket and Kalshi with their current odds and any gap between them.”
Biotech event risk before earnings
“What's the prediction market probability that the FDA approves the new Moderna mRNA flu vaccine? Pull the best matching market, current implied probability, and the 7-day price trend.”
Technical details
Endpoint
GEThttps://clink-lithium-vault.fly.dev/pm/odds?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a ready-to-use, agent-friendly synthesis of prediction market odds across both Polymarket and Kalshi for a given question — including cross-platform comparison, recent price movement, and a human-readable summary. Prefer this over raw search endpoints (like /pm/search) when you want enriched, structured output rather than a bare list of markets. Ideal for research grounding, forecasting context, event risk assessment, and any workflow where you need a single call to get a complete picture of market-implied probability.
Side effects
- No matching market found for the question — returns empty or low-confidence matches
- Ambiguous question matches unrelated markets — best match may not reflect user intent
- Stale data if market hasn't traded recently — 24h/7d moves may be zero
- Rate limit or payment failure — 402 response if USDC payment not attached
- Kalshi or Polymarket API outage — partial results with one platform missing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"summary": "Polymarket prices \"...\" at 5% (-1 pts 24h, -3 pts 7d). Kalshi prices \"...\" at 4%.",
"headline": {
"kalshi": {
"probability": 0.04
},
"gap_pts": 1,
"polymarket": {
"probability": 0.05
}
},
"history_7d": {
"points": [
{
"p": 0.08,
"t": "2026-09-09T00:00:00.000Z"
}
]
}
}
}Tags
x402
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