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Prediction Market Series Browser
x402
Prediction Market Series Browser is a paid API for AI agents from www.x402financialdata.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns all open Kalshi prediction markets under a specific series ticker (e.g. KXFEDFUNDSYEAR) using an exact server-side filter.
Price / call$0.01
Success—
StatusUnknown
How this service works
Every open market under one exact Kalshi series ticker (e.g. Fed rate decisions, recession odds) -- the reliable, exhaustive complement to /prediction-markets' best-effort keyword scan. Unlike keyword search, series_ticker is a genuine exact server-side filter. An empty result can mean an unknown series_ticker OR a real series with nothing open right now -- Kalshi's API returns the same response for both, flagged via the 'note' field. Supports optional limit (default 25, max 50). $0.01/call.
Output
A list of open Kalshi prediction markets belonging to the specified series ticker, including market details like titles, close dates, and current status. If the series ticker is unknown or has no open markets, an empty result is returned with a 'note' field explaining the ambiguity. Up to 25 markets by default, up to 50 if requested.
Example use cases
Fed rate decision market research
“Pull up every open Kalshi market in the KXFEDHIKE series so I can see what bets are available on Fed rate hikes this year — up to 50 markets please.”
Recession odds market scan
“List all the currently open Kalshi prediction markets under the KXRECESSION series ticker so I can see what probabilities the market is pricing in.”
Monitoring a specific policy series
“Check the KXFEDFUNDSYEAR series on Kalshi and show me all open markets in it — I want to track which contract windows are still tradeable.”
Technical details
Endpoint
GEThttps://www.x402financialdata.com/prediction-market-series/:series_tickerWhen to prefer
Prefer this endpoint over keyword-based prediction market search (/prediction-markets) when you know the exact Kalshi series ticker and need an exhaustive, reliable list of all open markets in that series. Keyword search is best-effort and may miss markets; this endpoint uses a genuine server-side exact filter. Use this when completeness matters — e.g. building a dashboard of all Fed rate markets or monitoring a specific policy series over time.
Side effects
- Unknown series_ticker returns same empty response as a valid series with no open markets — disambiguated only via the 'note' field
- Limit exceeding 50 may be clamped or rejected
- Stale or closed markets will not appear in results
- Series tickers that have changed or been retired return empty results
- Payment of $0.01 USDC required per call; missing payment results in 402 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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