Get KLSI Price History

Retrieve historical price data for a Kalshi market.

What you get:

• Price time series with timestamps
• Yes/No bid and ask prices
• Trading volume
• Open interest

Use cases:

• Build price charts
• Analyze historical trends
• Track market sentiment over time

GET /api/v1/klsi/{klsi_id}/prices

200

[
  {
    "exchange": "<string>",
    "market_id": "<string>",
    "price": 123,
    "yes_bid": 123,
    "yes_ask": 123,
    "volume": 123,
    "open_interest": 123,
    "last_update": "2023-11-07T05:31:56Z"
  }
]

Authorizations

X-API-Key · string · header · required

Your API key (get one from the test-key endpoint above)

Path Parameters

klsi_id · string · required

Kalshi market ID

Query Parameters

limit · integer · default: 10

Maximum number of price points to return (default: 10 in docs, no max limit)

Response

200 - application/json

Price history

exchange · string

market_id · string

price · number

yes_bid · number

yes_ask · number

volume · integer

open_interest · integer

last_update · string<date-time>