[docs](../../index.md) / [net.thauvin.erik.bitly](../index.md) / [Constants](./index.md) # Constants `open class Constants` [(source)](https://github.com/ethauvin/bitly-shorten/tree/master/src/main/kotlin/net/thauvin/erik/bitly/Constants.kt#L36) Provides the constants for this package. ### Companion Object Properties | Name | Summary | |---|---| | [API_BASE_URL](-a-p-i_-b-a-s-e_-u-r-l.md) | The Bitly API base URL.`const val API_BASE_URL: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | | [EMPTY](-e-m-p-t-y.md) | Empty String.`const val EMPTY: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | | [EMPTY_JSON](-e-m-p-t-y_-j-s-o-n.md) | Empty JSON Object.`const val EMPTY_JSON: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | | [ENV_ACCESS_TOKEN](-e-n-v_-a-c-c-e-s-s_-t-o-k-e-n.md) | The API access token environment variable.`const val ENV_ACCESS_TOKEN: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | | [FALSE](-f-a-l-s-e.md) | False`const val FALSE: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | | [TRUE](-t-r-u-e.md) | True`const val TRUE: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) |