Claude Code Plugins for jj (Jujutsu)

Claude Code plugins for jj (Jujutsu) workflows — project setup, worktree isolation via jj workspaces, commit management, code review, PR review, and feature development.

All plugins include a PreToolUse hook (block-raw-git.sh) that intercepts Bash tool calls and blocks raw git commands, keeping your workflow pure jj. When Claude reaches for git add or git commit, the hook catches it and suggests the jj equivalent.

All jj output commands (jj log, jj diff, jj bookmark list, jj op log, jj workspace list, jj show, jj evolog, jj op show, jj config list, jj tag list) use JSON templates (-T 'json(self)') by default, giving Claude Code structured, machine-parseable output instead of human-readable text. Requires jj >= 0.31.0.

Plugins

Plugin	Description	Commands	Agents
project-setup-jj	Bootstrap jj workflow enforcement with /project-setup	1	—
workspace-jj	Worktree isolation for jj repos via jj workspace hooks	2	—
commit-commands-jj	jj commit workflows — commit, push, PR creation, and more	14	—
code-review-jj	Automated code review with confidence-based scoring	1	—
pr-review-toolkit-jj	Specialized PR review agents	1	6
feature-dev-jj	Feature development with exploration, architecture, and review	1	3

project-setup-jj

Bootstrap jj workflow enforcement for any project with a single command. Sets up a SessionStart hook (shows jj context each session), a PreToolUse guard hook (prompts jj new before editing non-empty changes), permissions (allow jj/gh, deny git), and a CLAUDE.md policy directive.

Setup:

# 1. Install
/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/project-setup-jj

# 2. Run setup in your jj project
/project-setup

# 3. Restart Claude Code for SessionStart hook

Requires: jj and jq

workspace-jj

Enables Claude Code's --worktree flag and subagent isolation: "worktree" in jj repositories. Claude Code uses git worktrees by default for isolated parallel sessions — this plugin replaces that with jj workspaces via WorktreeCreate and WorktreeRemove hooks, so --worktree works natively in jj repos.

Setup:

# 1. Install
/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/workspace-jj

# 2. Run setup in your jj project (copies hook scripts, configures settings)
/workspace-setup

# 3. Restart Claude Code, then use worktrees
claude --worktree feature-auth

Claude Code doesn't pick up WorktreeCreate/WorktreeRemove hooks from plugins — they must be in project settings. The /workspace-setup command handles this by copying scripts to .claude/scripts/ and configuring .claude/settings.local.json.

Requires: jj and jq

commit-commands-jj

Streamline your jj commit workflow with simple slash commands.

Commands: /commit, /commit-push-pr, /new, /edit, /describe, /squash, /abandon, /sync, /undo, /clean_stale, /show, /evolog, /op-show, /tag-list

code-review-jj

Automated code review for pull requests using confidence-based scoring.

Command: /code-review

pr-review-toolkit-jj

Comprehensive PR review using six specialized agents, each running a focused pass:

Agent	Purpose
code-reviewer	Style guide adherence, best practices, project conventions
silent-failure-hunter	Silent failures, inadequate error handling, swallowed exceptions
code-simplifier	Code clarity, consistency, and maintainability
comment-analyzer	Comment accuracy, completeness, and long-term maintainability
pr-test-analyzer	Test coverage quality and completeness
type-design-analyzer	Type encapsulation, invariant expression, and design quality

Command: /review-pr

feature-dev-jj

Guided feature development pipeline — explore, then architect, then review:

Agent	Phase
code-explorer	Deep codebase analysis — traces execution paths, maps architecture
code-architect	Designs feature architectures following existing patterns and conventions
code-reviewer	Reviews code for bugs, logic errors, security vulnerabilities, and quality

Command: /feature-dev

Installation

Install any plugin directly from GitHub using Claude Code:

/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/project-setup-jj
/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/workspace-jj
/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/commit-commands-jj
/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/code-review-jj
/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/pr-review-toolkit-jj
/install-plugin https://github.com/muloka/claude-plugins/tree/main/plugins/feature-dev-jj

Note: After installing workspace-jj, run /workspace-setup in your jj project and restart Claude Code.

Acknowledgments

Originally modelled off of Anthropic's claude-plugins-official.

License

See each plugin directory for the relevant LICENSE file.