> ## Documentation Index > Fetch the complete documentation index at: https://docs.amberdata.io/llms.txt > Use this file to discover all available pages before exploring further. # Reference > Provides comprehensive reference data for futures instruments across exchanges, including details on base and quote symbols, price and volume limits, precision, contract terms, and trading availability. ### precisionVolume Occasionally, you may encounter a value of `0` for `precisionVolume`. This is due to the underlying exchange returning 0 for the instrument's trade size precision. We have noticed this behavior with several instruments on Kraken. ## OpenAPI ````yaml get /futures/exchanges/reference openapi: 3.1.0 info: title: market-api version: '2' servers: - url: https://api.amberdata.com/markets security: - ApiKeyAuth: [] paths: /futures/exchanges/reference: get: summary: Reference description: >- Provides comprehensive reference data for futures instruments across exchanges, including details on base and quote symbols, price and volume limits, precision, contract terms, and trading availability. operationId: futures-exchanges-reference parameters: - name: exchange in: query description: >- **[Optional]** Only return data for the given exchange(s) (comma separated) schema: type: string - name: instrument in: query description: Only return data for the given pair. schema: type: string - name: includeInactive in: query description: >- **[Optional]** If true, endpoint returns all instruments, including delisted ones. **[Defaults]** `True | False*`. schema: type: boolean - name: size in: query description: >- **[Optional]** The number of records per page (only available when `includeInactive=true`). schema: type: integer format: int32 - name: startDate in: query description: >- **[Optional]** Payload only includes instruments which have expiration after this date (inclusive). **[Formats]** `seconds | milliseconds | iso8601` **[Examples]** `1578531600 | 1578531600000 | 2020-09-01T01:00:00` schema: type: string format: date-time - name: endDate in: query description: >- **[Optional]** Payload only includes instruments which have expiration before this date (exclusive). **[Formats]** `seconds | milliseconds | iso8601` **[Examples]** `1578531600 | 1578531600000 | 2020-09-01T01:00:00` schema: type: string format: date-time - name: includeOriginalReference in: query description: >- **[Optional]** If true, endpoint returns originalReference. **[Defaults]** `True | False*`. schema: type: boolean - name: underlying in: query description: >- **[Optional]** Filter for instruments whose underlying matches the value given. **[Examples]** btc | ETH schema: type: string - name: expiration in: query description: >- **[Optional]** Filter for instruments that expire on the specified date. **[Example]** 2024-08-01 schema: type: string format: date-time - name: contractType in: query description: >- **[Optional]** Filter for instruments that match the contract type specified. **[Examples]** yearly | quarterly | monthly | weekly | daily | perpetual | prediction schema: type: string - name: timeFormat in: query description: >- **[Optional]** Time format of the timestamps in the return payload. **[Defaults]** `milliseconds | ms* | iso | iso8601 | hr | human_readable` schema: type: string - name: Accept-Encoding in: header required: true description: '' schema: type: string default: gzip, deflate, br - name: api-version in: header schema: type: string responses: '200': description: '200' content: application/json: examples: Success: value: status: 200 title: OK description: Successful request payload: metadata: next: >- https://api.amberdata.com/markets/futures/exchanges/reference?cursor=N4IglgdgxgNgrgEwKYEkIEMoBcwDckgBcAZujAM5IA0408yA8gE5gDmkZASksUk0tAIkylGpFiIkAVQjk4AB3kB7JliQIAogA8oAC3QRWSckVIVqIHAFskAMRVX0WIiCtgYMMJShKICEzTEDk4uAFbkviA08uhGRACMNORgAF5CAKwADJkAvkA api-version: '2023-09-30' data: - exchange: binance instrument: 1000BONKUSDC baseSymbol: 1000BONK quoteSymbol: USDC market: futures exchangeEnabled: true limitsPriceMin: 0.000001 limitsPriceMax: 200 limitsVolumeMin: 1 limitsVolumeMax: 10000000 limitsMarketMin: 1 limitsMarketMax: 2000000 limitsLeverageMin: null limitsLeverageMax: null limitsLeverageSuperMax: null limitsCostMin: null limitsCostMax: null precisionPrice: 0.000001 precisionVolume: 1 precisionBase: 1.e-8 precisionQuote: 1.e-8 listingTimestamp: null contractUnderlying: 1000BONK contractExpirationTimestamp: null contractPeriod: perpetual contractSize: null contractSettleType: linear contractSettleSymbol: null schema: oneOf: - title: Success type: object properties: status: type: integer example: 200 default: 0 title: type: string example: OK description: type: string example: Successful request payload: type: object properties: metadata: type: object properties: next: type: string example: >- https://api.amberdata.com/markets/futures/exchanges/reference?cursor=N4IglgdgxgNgrgEwKYEkIEMoBcwDckgBcAZujAM5IA0408yA8gE5gDmkZASksUk0tAIkylGpFiIkAVQjk4AB3kB7JliQIAogA8oAC3QRWSckVIVqIHAFskAMRVX0WIiCtgYMMJShKICEzTEDk4uAFbkviA08uhGRACMNORgAF5CAKwADJkAvkA api-version: type: string example: '2023-09-30' data: type: array items: type: object properties: exchange: type: string example: binance instrument: type: string example: 1000BONKUSDC baseSymbol: type: string example: 1000BONK quoteSymbol: type: string example: USDC market: type: string example: futures exchangeEnabled: type: boolean example: true default: true limitsPriceMin: type: number example: 0.000001 default: 0 limitsPriceMax: type: integer example: 200 default: 0 limitsVolumeMin: type: integer example: 1 default: 0 limitsVolumeMax: type: integer example: 10000000 default: 0 limitsMarketMin: type: integer example: 1 default: 0 limitsMarketMax: type: integer example: 2000000 default: 0 limitsLeverageMin: {} limitsLeverageMax: {} limitsLeverageSuperMax: {} limitsCostMin: {} limitsCostMax: {} precisionPrice: type: number example: 0.000001 default: 0 precisionVolume: type: integer example: 1 default: 0 precisionBase: type: number example: 1.e-8 default: 0 precisionQuote: type: number example: 1.e-8 default: 0 listingTimestamp: {} contractUnderlying: type: string example: 1000BONK contractExpirationTimestamp: {} contractPeriod: type: string example: perpetual contractSize: {} contractSettleType: type: string example: linear contractSettleSymbol: {} deprecated: false components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key ````