use-jj

A command that adds Jujutsu version-control context to a coding session. Jujutsu, or jj, is a version-control system used to track file history and changes.

In plain words
What is it for?
It is for checking repository status and history, committing selected changes, undoing a jj command, and pushing changes with jj.
Why use it?
It helps ensure repository operations use the project's required jj commands instead of Git commands, including status checks, commits, undo, and pushing changes.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/lhohan/claude-code-plugins/use-jj
Clone the repo
git clone --depth 1 https://github.com/lhohan/claude-code-plugins
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 164 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00009 $0.00164
Opus 5 $0.00005 $0.00082
Sonnet 5 $0.00002 $0.00033
Haiku 4.5 $0.00001 $0.00016

Measured 2d ago against content hash 11690704c0ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

use-jj scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

jujutsu-vcs/commands/use-jj.md · 17 lines

What it actually says

CRITICAL: This repository uses Jujutsu (jj), not git. Always use jj commands for version control operations.

  • Check status: jj st --no-pager
  • View history: jj log --no-pager
  • Create commit: jj commit -m "message"
  • Only commit related changes: jj commit -m "message" [FILESETS]
    • NEVER restore files to exclude them from a commit.
  • Push: jj git push
  • Push main: jj bookmark set main -r @- && jj git push
  • Undo last jj command: jj undo
  • Help: jj help

State the version control system you will be using for this session.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 17 lines · 9 tokens per session scan A 11690704c0ee

Subscribe to this mod's changes

use-jj is a command published in the GitHub repository lhohan/claude-code-plugins (2 stars, last pushed 9mo ago), licensed MIT. It adds 9 tokens to every session and 164 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.