Kalshi — the CFTC-regulated US prediction market exchange — is now available in the Anysite API and MCP server. Nine dedicated endpoints cover every layer of the exchange's public market data: events, tradeable Yes/No contracts, order-book depth, OHLC price history, and trade feeds.
What's available
The Kalshi endpoint family spans three categories:
- Events — retrieve a prediction-market event by ticker or search events within a series. An event groups the tradeable contracts for a specific question and date window.
- Markets — five endpoints covering individual Yes/No contracts: current prices and open interest, OHLC candlestick history (1m, 1h, or 1d), order-book snapshots with depth, market search by event or series, and the public trade feed with taker side and block trade flags.
- Series — retrieve and search the template records that define recurring contract programmes (category, frequency, fee structure, and settlement sources).
Why it matters
Kalshi's contracts are real-money signals on what markets believe will happen — not survey data, not social sentiment. A contract trading at 70 cents on the Yes side means market participants collectively assign 70% probability to that outcome. That kind of calibrated, financially-committed probability signal is useful in ways traditional data sources aren't: grounding LLM forecasting pipelines, tracking political risk in real time, or building dashboards that surface implied probabilities alongside conventional price data.
Because Kalshi is CFTC-regulated, its data is auditable and methodologically consistent — a meaningful difference for researchers and quantitative applications that need to defend their inputs.
Getting started
All Kalshi endpoints follow the same access pattern as the rest of the Anysite API — a single access-token header. No Kalshi account, no exchange credentials, no OAuth flow.
curl -X POST "https://api.anysite.io/api/kalshi/markets/search" \
-H "access-token: YOUR_TOKEN" \
-H "Content-Type: application/json" \
-d '{"series_ticker": "KXBTCD", "status": "open", "count": 20}'The same endpoints are available as MCP tools in Claude Desktop, Cursor, and ChatGPT via the Anysite MCP server.
Full documentation, parameter reference, and example workflows are on the Kalshi endpoint page. The Anysite REST API reference is at docs.anysite.io.