/kalshi/markets/orderbook

POST /api/kalshi/markets/orderbook

Price: 1 credit

Get the current Yes/No order-book snapshot of a prediction-market contract

How to use it

Get the current order-book snapshot of a single prediction-market contract by its ticker. Returns the resting bid levels on both the Yes and No sides, each level carrying its price and the total resting size at that price. Use depth to limit how many price levels are returned per side.

Parameters

• access-token string required

Request body

• timeout integer — Max scrapping execution timeout (in seconds) (default: 300; min: 20; max: 1500)
• ticker string required — Market ticker of the tradeable Yes/No contract (examples: "KXELONMARS-99", "KXNBAGAME-26JAN16LALBOS-BOS"; minLength: 1)
• depth integer nullable — Maximum number of price levels to return per side (min: 1)

Response

• @type string (default: "KalshiOrderbook")
• ticker string required
• yes array (default: [])
  • @type string (default: "KalshiOrderbookLevel")
  • price number required
  • size number required
• no array (default: [])
  • @type string (default: "KalshiOrderbookLevel")
  • price number required
  • size number required

Errors

• 422 — The request body did not validate Check the fields against this schema. A URN with the wrong prefix is the most common cause.
• 408 — The request ran past its time limit Raise `timeout` in the request body, up to the maximum this endpoint documents. Lowering `count` or turning off the `with_*` flags also helps, because less work finishes sooner.
• 412 — Market not found Retrying will not help: either the entity does not exist, or the input points at a different one.
• 429 — Too many requests: a rate limit or a usage window is exhausted When the response carries an X-Retry-After header, wait that many seconds and retry: the same number is in the body as `detail.retry_after`, and the limit clears once that window passes. The message in the body names the limit that was hit.
• 500 — Something broke on our side Retrying will not help. If it keeps happening, send us the X-Request-ID from the response headers.
• 529 — Rate limit reached, or the endpoint is overloaded Wait at least 30 seconds, then retry.

Response headers

• X-Error — Error message text (present only on error)
• X-Request-ID — Unique request identifier
• X-Execution-Time — Execution time in seconds
• X-Result-Count — How many records the body carries. 0 means an empty result, which is a normal answer and not by itself an error. A non-zero count can come back together with X-Error when the failure happened partway through — read this header and X-Error independently.
• X-Total-Available-Results — How many records exist for this query, when the endpoint can say. On a `dry_run` request this is the answer and the body is empty. It saturates: the endpoint's documented maximum means 'at least that many', any smaller number is exact.
• X-Warning — Present when the request body carried keys this endpoint does not document. They were ignored, so any filter you meant to apply through them did not apply. Check the spelling against this schema and retry.
• X-Retry-After — Seconds to wait before retrying. Present only on 429.