JetBrains Junie
Overview
Autonomous AI coding agent from JetBrains that plans, codes, and iterates inside your IDE to complete multi-step tasks end-to-end.
Full Description
Junie is JetBrains' autonomous AI agent designed to handle complex, multi-step development tasks from within your JetBrains IDE. Unlike traditional AI assistants that respond to single prompts, Junie reads your brief, creates a plan, writes code across multiple files, runs tests, inspects failures, and iterates — all without constant hand-holding. It understands your project structure, existing dependencies, and coding patterns to produce changes that fit naturally into your codebase. Junie is particularly effective at implementing new features, fixing bugs from error traces, writing comprehensive test suites, and refactoring legacy code. It operates as an agentic loop, using IDE tooling to validate its own output.