> ## Documentation Index > Fetch the complete documentation index at: https://docs.kraken.com/llms.txt > Use this file to discover all available pages before exploring further. # Get orderbook > This endpoint returns the entire non-cumulative order book of currently listed Futures contracts. ## OpenAPI ````yaml /openapi/futures-rest.yaml get /orderbook openapi: 3.1.0 info: title: Kraken Futures Trading API version: v3 description: Market data and order management endpoints. servers: - url: https://futures.kraken.com/derivatives/api/v3 description: Kraken Futures security: [] tags: - name: Market Data - name: Instrument Details description: >- - The `/instruments/status` endpoint provides a list of statuses for all instruments. - The `/instruments/{symbol}/status` endpoint provides the status of a single instrument. - name: Order Management - name: Multi-Collateral description: Endpoints pertaining to the multi-collateral (MC) futures markets. - name: Account Information - name: Assignment Program - name: Fee Schedules description: >- **DEPRECATED** — Effective 2026-06-22, the fee values returned by these endpoints no longer reflect the fees actually charged on Futures trades. Futures fee calculation has been migrated to a centralised Kraken fee service. To determine the fee rate applied to your trades, use the Spot [`GetTradeVolume`](https://docs.kraken.com/api/docs/rest-api/get-trade-volume) endpoint authenticated with a Spot API key. - name: General - name: Historical Data - name: Historical Funding Rates - name: Trading Settings - name: Subaccounts - name: Transfers - name: RFQs paths: /orderbook: get: tags: - Market Data summary: Get orderbook description: >- This endpoint returns the entire non-cumulative order book of currently listed Futures contracts. operationId: getOrderbook parameters: - description: The symbol of the Futures. name: symbol in: query required: true schema: type: string responses: '200': description: '' content: application/json: schema: oneOf: - title: Success Response allOf: - type: object properties: orderBook: $ref: '#/components/schemas/OrderBook' description: >- A structure containing lists with bid and ask prices and sizes. required: - orderBook - $ref: '#/components/schemas/SuccessResponse' - $ref: '#/components/schemas/ErrorResponse' security: [] components: schemas: OrderBook: type: object properties: asks: description: >- The first value of the inner list is the ask price, the second is the ask size. The outer list is sorted ascending by ask price. type: array items: description: >- An array of two floats. The first value is the price. The second value is the size. type: array minItems: 2 maxItems: 2 items: type: number example: - 40178 - 5 bids: description: >- The first value of the inner list is the bid price, the second is the bid size. The outer list is sorted descending by bid price. type: array items: description: >- An array of two floats. The first value is the price. The second value is the size. type: array minItems: 2 maxItems: 2 items: type: number example: - 40178 - 5 required: - asks - bids example: bids: - - 40178 - 5 - - 40174 - 4.2 - - 40170 - 7.2 asks: - - 40186 - 5.0183 - - 40190 - 0.4183 SuccessResponse: title: Success Response allOf: - $ref: '#/components/schemas/ResultSuccess' - $ref: '#/components/schemas/ServerTime' ErrorResponse: allOf: - title: Errors type: object properties: errors: type: array items: $ref: '#/components/schemas/Error' error: $ref: '#/components/schemas/Error' required: - error - $ref: '#/components/schemas/ResultError' - $ref: '#/components/schemas/ServerTime' ResultSuccess: type: object properties: result: type: string enum: - success example: success required: - result ServerTime: type: object properties: serverTime: description: Server time in Coordinated Universal Time (UTC) type: string format: date-time example: '2020-08-27T17:03:33.196Z' required: - serverTime Error: type: string description: |- Error description. - `accountInactive`: The Futures account the request refers to is inactive - `apiLimitExceeded`: The API limit for the calling IP address has been exceeded - `authenticationError`: The request could not be authenticated - `insufficientFunds`: The amount requested for transfer is below the amount of funds available - `invalidAccount`: The Futures account the transfer request refers to is invalid - `invalidAmount`: The amount the transfer request refers to is invalid - `invalidArgument`: One or more arguments provided are invalid - `invalidUnit`: The unit the transfer request refers to is invalid - `Json Parse Error`: The request failed to pass valid JSON as an argument - `marketUnavailable`: The market is currently unavailable - `nonceBelowThreshold`: The provided nonce is below the threshold - `nonceDuplicate`: The provided nonce is a duplicate as it has been used in a previous request - `notFound`: The requested information could not be found - `requiredArgumentMissing`: One or more required arguments are missing - `Server Error`: There was an error processing the request - `Unavailable`: The endpoint being called is unavailable - `unknownError`: An unknown error has occurred enum: - accountInactive - apiLimitExceeded - authenticationError - insufficientFunds - invalidAccount - invalidAmount - invalidArgument - invalidUnit - Json Parse Error - marketUnavailable - nonceBelowThreshold - nonceDuplicate - notFound - requiredArgumentMissing - Server Error - Unavailable - unknownError ResultError: type: object properties: result: type: string enum: - error example: error required: - result ````