---
title: Kotlin client library
description: Use the InfluxDB Kotlin client library to interact with InfluxDB.
url: https://docs.influxdata.com/influxdb/v2/api-guide/client-libraries/kotlin/
estimated_tokens: 286
product: InfluxDB OSS v2
version: v2
---

# Kotlin client library

This page documents an earlier version of InfluxDB OSS. [InfluxDB 3 Core](/influxdb3/core/) is the latest stable version.

#### API token hashing is enabled by default in InfluxDB OSS 2.9.0

Stronger token security: tokens are stored as hashes on disk, so a copy of the database file doesn’t expose usable tokens. Existing tokens are hashed on first startup and the original strings can’t be recovered afterward — **capture any plaintext tokens you still need before you upgrade**.

For more information, see [Token hashing](/influxdb/v2/admin/tokens/#token-hashing).

Kotlin is an open source programming language that runs on the Java Virtual Machine (JVM).

The documentation for this client library is available on GitHub.

[Kotlin InfluxDB client](https://github.com/influxdata/influxdb-client-java/tree/master/client-kotlin)