How to Use Junie for JetBrains and CLI Coding Tasks

How to Use Junie depends on the surface you want: JetBrains IDE agent work, Junie CLI in a terminal, or headless usage in scripts. Start with a small repository task, then choose whether to authenticate with your JetBrains subscription, JUNIE_API_KEY usage-based billing, or BYOK.

For Junie CLI, install it from the terminal with `curl -fsSL https://junie.jetbrains.com/install.sh | bash`, move to the project root, and run `junie`. JetBrains documents Linux, macOS, and Windows support, plus a PowerShell install path for Windows users.

Visual evidenceOriginal diagramChecked 2026-06-25Source

Authentication is the important fork. A JetBrains Account lets you use Junie as part of your subscription plan. JUNIE_API_KEY enables usage-based billing. BYOK lets Junie send requests directly through your own keys or OAuth tokens from providers such as Anthropic, OpenAI, Google, or other model providers.

Good first tasks are narrow: ask Junie to explain a module, add a missing test, update a small function, review a PR, or make a bounded refactor. Use `@` references for files and directories, and add follow-up clarifications while Junie CLI is working when the task needs more context.