[
  {
    "snapshot_time": "2023-11-07T05:31:56Z",
    "exchange": "<string>",
    "market_id": "<string>",
    "bid_side": [
      123
    ],
    "ask_side": [
      123
    ],
    "original_last_update": "2023-11-07T05:31:56Z"
  }
]

KLSI

Get KLSI orderbook

Retrieve orderbook snapshots for a Kalshi market. The orderbook shows all open buy and sell orders at different price levels.

Understanding the Response:

bid_side: Array of 101 values representing buy order quantities at price levels from $0.00 to$ 1.00 in increments of $0.01 (1 cent). Index 0 =$ 0.00, index 1 = $0.01, ..., index 100 =$ 1.00.
ask_side: Array of 101 values representing sell order quantities at the same price levels.
snapshot_time: When this orderbook snapshot was captured

Use Cases:

Calculate best bid/ask prices and spreads
Analyze market depth and liquidity
Build real-time trading visualizations

Example

Request: GET /api/v1/klsi/KXBTC-26FEB01/orderbook?limit=100
Header: X-API-Key: YOUR_API_KEY

GET

api

klsi

{klsi_id}

orderbook

[
  {
    "snapshot_time": "2023-11-07T05:31:56Z",
    "exchange": "<string>",
    "market_id": "<string>",
    "bid_side": [
      123
    ],
    "ask_side": [
      123
    ],
    "original_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 rows to return (default: 10 in docs, max: 10000). Use a higher limit in your code.

cursor

string

Pagination cursor for next page

Response

200 - application/json

Orderbook snapshots

snapshot_time

string<date-time>

exchange

string

market_id

string

bid_side

number[]

ask_side

number[]

original_last_update

string<date-time>

Get KLSI Market Rules Get KLSI Trade History