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Overview

Koog is an open-source JetBrains framework for building AI agents designed specifically for the JVM ecosystem. It provides a first-class development experience for both Kotlin and Java developers, featuring an idiomatic, type-safe Kotlin DSL and fluent builder-style Java APIs.

While Java developers can leverage the full power of Koog on the JVM using idiomatic APIs, Kotlin developers can also deploy agents across JS, WasmJS, Android, and iOS targets using Kotlin Multiplatform.

Agents

Learn about agents in general and how to create different types of agents using Koog:

  • Basic agents

    Use a predefined strategy that works for most common use cases

  • Functional agents

    Define custom logic as a lambda function in plain Kotlin or Java

  • Graph-based agents

    Implement a custom workflow as a strategy graph

  • Planner agents beta

    Iteratively build and execute a plan until the state matches the desired conditions

Core components

Learn about the core components of Koog agents in detail:

  • Prompts

    Create, manage, and run prompts that drive the agent's interaction with the LLM

  • Strategies

    Design the agent's intended workflow as a directed graph

  • Tools

    Enable the agent to interact with external data sources and services

  • Features

    Extend and enhance the functionality of AI agents

Advanced usage

  • History compression

    Optimize token usage while maintaining context in long-running conversations using advanced techniques

  • Agent persistence

    Restore the agent state at specific points during execution

  • Structured output

    Generate responses in structured formats

  • Streaming API

    Process responses in real-time with streaming support and parallel tool calls

  • Knowledge retrieval beta

    Retain and retrieve knowledge across conversations using vector embeddings and RAG

  • Tracing

    Debug and monitor agent execution with detailed, configurable tracing

  • Long Term Memory beta

    Integrate vector databases and memory providers for RAG and persistent memory.

Integrations