JetBrains Junie ecosystem

What JetBrains Junie can load, and the skills, subagents and MCP servers in this directory that work with it.

✓ Agent Skills
✓ Subagents
✓ MCP
✓ AGENTS.md
– Plugins
– Hooks
✓ Rules

What is JetBrains Junie?

What it is

Junie is JetBrains' AI coding agent. It runs as a plugin in JetBrains IDEs such as IntelliJ IDEA, PyCharm, WebStorm and Android Studio, as a standalone command-line agent on macOS, Linux and Windows, and inside GitHub Actions and GitLab CI/CD, where it can work on issues and open pull or merge requests. In the IDE it can use JetBrains' own code insight, inspections and test runners while it works.

Key features

Plan mode that writes requirements, design and delivery stages before changing code
Human-in-the-loop approvals for key actions, and course correction while a task runs
Remote control for running tasks asynchronously and checking progress from the web
A code review agent and CI integrations for GitHub and GitLab
Support for several model families, with bring-your-own-key options
CLI install: curl -fsSL https://junie.jetbrains.com/install.sh | bash

Skills, subagents and MCP

Junie has good support for the current agent standards. It reads AGENTS.md from the project root, combined with .junie/playbook.md and any .junie/rules/*.md files, and applies them to every task. It supports Agent Skills, which load only when a task needs them. The CLI supports custom subagents, defined as Markdown files in the project's .agents/ folder with their own prompt, tool restrictions and model. MCP servers are configured in .junie/mcp/mcp.json at project level or ~/.junie/mcp/mcp.json for the user, and the same file works in the IDE and the CLI.

Pricing

Junie uses JetBrains AI credits. At the time of writing (September 2026), the Junie site lists a free tier with a small number of credits and paid AI Pro and AI Ultimate plans with larger monthly credit allowances. BYOK usage is billed at provider rates. Check the JetBrains AI pricing page for current plan prices and quotas.

Who it is for

Developers who already work in JetBrains IDEs and want an agent that understands the IDE's project model, and teams that want the same agent in the terminal and in CI. VS Code users are not the target.

Verdict

Junie has matured into a full agent with CLI and CI modes and first-class AGENTS.md, skills, subagents and MCP support. Its main limits are the credit-based quotas and a strong tie to the JetBrains ecosystem.

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