Claude-skill-registry jj:describe

Generate and set a commit description for a commit in jj

install

source · Clone the upstream repo

git clone https://github.com/majiayu000/claude-skill-registry

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/jj-describe-jbott-nix-config" ~/.claude/skills/majiayu000-claude-skill-registry-jj-describe && rm -rf "$T"

manifest: skills/data/jj-describe-jbott-nix-config/SKILL.md

Describe a Commit

Generate and set a commit description. Defaults to

(working copy), but typically used on

@-

(parent) when working copy is empty.

Process

Run

jj show <rev> --summary

and

jj diff -r <rev> --stat

to get change overview (use

@-

for parent)

Analyze changes:
- Small (≤5 files, ≤200 lines): run
```
jj diff -r <rev>
```
  directly
- Large: use
```
/jj-context
```
  for structured summary
Determine project prefix from file paths

Generate a one-line description:

<prefix>: <lowercase verb> <what changed>

Run

jj describe <rev> -m "<description>"

(e.g.,

jj describe @- -m "..."

)

IMPORTANT: Always use a single-line commit message. Never use multi-line descriptions or bullet points.

Project Prefix Examples

Use the descriptive folder path identifying the subsystem:

```
src/auth
```
for authentication code
```
lib/utils
```
for utility libraries
```
services/api
```
for API services
```
db/migrations
```
for database changes

Good Description Examples

```
src/auth: add JWT token refresh logic
```

lib/utils: fix date parsing for ISO formats

services/api: add rate limiting middleware

```
db/migrations: add users table
```

tests/integration: add checkout flow tests