Kalshi market order book

The order book of one Kalshi market: yes and no bids with price and size (best price first), best bid and implied ask on each side, number of levels and total size per side. Settled markets answer with an empty book.

Every response includes credits_used: the credits this call cost.

Parameters

Every endpoint also takes fresh, raw, fields (see lean responses and caching).

Example

curl "https://api.api.sh/kalshi/v1/orderbook?ticker=KXFED-27APR-T5.50" \
  -H "x-api-key: $APISH_KEY"

import os, requests

res = requests.get(
    "https://api.api.sh/kalshi/v1/orderbook",
    params={"ticker": "KXFED-27APR-T5.50"},
    headers={"x-api-key": os.environ["APISH_KEY"]},
    timeout=120,
)
res.raise_for_status()
data = res.json()

const url = new URL("https://api.api.sh/kalshi/v1/orderbook");
url.searchParams.set("ticker", "KXFED-27APR-T5.50");

const res = await fetch(url, { headers: { "x-api-key": process.env.APISH_KEY } });
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const data = await res.json();

Response

A JSON object with the fields described above, plus raw (the source's own data), cached, fetched_at and credits_used. Errors return {"success": false, "error": "…"} with the HTTP status (see errors). A lookup that ran but found nothing (404) costs the price above; refused calls and errors on our side are free (what's charged).