[**brk-client**](../README.md) *** [brk-client](../globals.md) / SingleItemBuilder # Interface: SingleItemBuilder\ Defined in: [Developer/brk/modules/brk-client/index.js:1700](https://github.com/bitcoinresearchkit/brk/blob/37e2b6eae2ee7db79b2d392e73eb0697e4a91b28/modules/brk-client/index.js#L1700) ## Type Parameters ### T `T` ## Properties ### fetch > **fetch**: (`onValue?`) => `Promise`\<[`SeriesData`](../type-aliases/SeriesData.md)\<`T`\>\> Defined in: [Developer/brk/modules/brk-client/index.js:1701](https://github.com/bitcoinresearchkit/brk/blob/37e2b6eae2ee7db79b2d392e73eb0697e4a91b28/modules/brk-client/index.js#L1701) Fetch the item #### Parameters ##### onValue? (`value`) => `void` #### Returns `Promise`\<[`SeriesData`](../type-aliases/SeriesData.md)\<`T`\>\> *** ### fetchCsv > **fetchCsv**: () => `Promise`\<`string`\> Defined in: [Developer/brk/modules/brk-client/index.js:1702](https://github.com/bitcoinresearchkit/brk/blob/37e2b6eae2ee7db79b2d392e73eb0697e4a91b28/modules/brk-client/index.js#L1702) Fetch as CSV #### Returns `Promise`\<`string`\> *** ### then > **then**: [`Thenable`](../type-aliases/Thenable.md)\<`T`\> Defined in: [Developer/brk/modules/brk-client/index.js:1703](https://github.com/bitcoinresearchkit/brk/blob/37e2b6eae2ee7db79b2d392e73eb0697e4a91b28/modules/brk-client/index.js#L1703) Thenable