Koog: JVM Agent Framework
JetBrains’ IntelliJ IDEA introduced Koog, a JVM‑focused framework for building enterprise AI agents that targets Java/Spring developers shipping agents into corporate toolchains announced. Koog aims to simplify integrating agent skills into JVM microservices common in large SaaS stacks.
The Koog repository on GitHub (JetBrains/koog)(github.com) is published under the Apache‑2.0 license, registers roughly 3.8k stars, and shows active development with the latest release marked as 0.6.4(github.com). JetBrains published a Java API dubbed "Koog for Java" that exposes functional, graph‑based, and planner‑style workflow strategies plus idiomatic Java builders and thread‑pool executors for running agents in‑process rather than via separate Python services(blog.jetbrains.com). A Spring Boot starter (koog‑spring‑boot‑starter)(docs.koog.ai) provides auto‑configuration and DI beans and documents built‑in connectors for OpenAI, Anthropic, Google, OpenRouter, DeepSeek, and Ollama as provider options for LLM calls. The 0.6.4 changelog highlights an LLM Client Router feature that enables request routing and pluggable load‑balancing strategies across multiple LLM clients—useful for staged model rollouts and cost‑aware routing policies(github.com). Koog’s documentation and release posts call out persistence and observability primitives—checkpointing, structured traces, and a Retry component introduced across 0.3/0.4 releases—designed to support long‑running, fault‑tolerant enterprise agent workflows(docs.koog.ai). Official repository examples include a Spring Boot Java customer‑support demo that wires OpenAI GPT‑4 and Anthropic Claude into an agent pipeline to demonstrate multi‑model orchestration, problem identification, and automated resolution patterns(github.com). Koog is built on Kotlin Multiplatform and the project site and docs explicitly list JVM, Android, iOS, and WebAssembly targets, enabling a single agent codebase to run across server and client runtimes for heterogeneous deployment footprints(jetbrains.com).
