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BlockRun Kalshi Open Interest Lookup
x402
BlockRun Kalshi Open Interest Lookup is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.0085/call, status unknown (last checked 2026-09-15).
Fetches open interest data for a specific Kalshi prediction market contract by ticker symbol.
Price / call$0.0085
Success—
StatusUnknown
How this service works
Pay for the outcome. One endpoint for every model, tool and data source an agent needs — each call priced before it runs, at the best value per dollar. 103 models and 100 data and tool APIs.
Output
Returns open interest figures for the specified Kalshi prediction market ticker, reflecting the total number of outstanding (unsettled) contracts currently held by market participants, indicating liquidity and engagement levels.
Example use cases
Monitor prediction market liquidity
“Can you check the open interest on the Kalshi ticker FED-2025-MAR right now? I want to know how liquid that market is before I place a trade.”
Track event contract activity
“What's the open interest for the Kalshi contract with ticker BTCEND-2025-DEC? I'm trying to gauge how much participation there is in that market.”
Compare contract engagement levels
“Pull the open interest data for the Kalshi market ELEC-2025-NOV — I want to see how many contracts are currently outstanding on that event.”
Technical details
Endpoint
GEThttps://blockrun.ai/api/v1/surf/prediction-market/kalshi/open-interestWhen to prefer
Use this endpoint when you need open interest specifically from Kalshi's prediction market platform via a pay-per-call USDC-settled API, without needing a direct Kalshi API key — ideal for AI agents that want financial-grade prediction market data billed atomically on-chain.
Side effects
- Invalid or unknown ticker symbol returns an error or empty result
- Ticker for a closed or settled market may return zero or an error
- Network or upstream Kalshi API unavailability causes a 502/503 response
- Missing required ticker query parameter returns a 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ticker | string | Required query param |
Tags
x402
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