Overview
Koog is an open-source JetBrains framework for building AI agents with an idiomatic, type-safe Kotlin DSL designed specifically for JVM and Kotlin developers. It lets you create agents that interact with tools, handle complex workflows, and communicate with users.
You can customize agent capabilities with a modular feature system and deploy your agents across JVM, JS, WasmJS, Android, and iOS targets using Kotlin Multiplatform.
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Build and run your first AI agent
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Learn the essential terms
Agents
Learn about agents in general and how to create different types of agents using Koog:
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Use a predefined strategy that works for most common use cases
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Define custom logic as a lambda function in plain Kotlin
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Implement a custom workflow as a strategy graph
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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:
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Create, manage, and run prompts that drive the agent's interaction with the LLM
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Design the agent's intended workflow as a directed graph
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Enable the agent to interact with external data sources and services
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Extend and enhance the functionality of AI agents
Advanced usage
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Optimize token usage while maintaining context in long-running conversations using advanced techniques
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Restore the agent state at specific points during execution
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Generate responses in structured formats
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Process responses in real-time with streaming support and parallel tool calls
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Retain and retrieve knowledge across conversations using vector embeddings, ranked document storage, and shared agent memory
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Debug and monitor agent execution with detailed, configurable tracing
Integrations
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Use MCP tools directly in AI agents
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Add Koog to your Spring applications
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Integrate Koog with Ktor servers
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Trace, log, and measure your agent with popular observability tools
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Connect agents and services over a shared protocol