318 Local Skill Development 75f3cc8c

Local Skill Development Workflow

How to develop and test Claude Code marketplace plugins (skills) without releasing new versions.

Quick Start

This repo includes Makefile targets that automate the symlink workflow:

make dev-link    # Link your working copy to the plugin cache
make dev-unlink  # Restore the released version

Restart Claude Code after running either command.

How Plugin Loading Works

Claude Code loads plugins from a cache directory, not from your source code. Understanding this is key to the development workflow.

When you install a plugin, Claude Code clones the repo into marketplaces/ and copies a clean snapshot into cache/. The CLI reads from cache/ at session start. Edits to your working copy or the marketplace clone have no effect until the cache is updated.

Symlink Development Setup

Symlink the cache directory to your working copy so edits are immediately available on CLI restart.

Step 1: Identify Your Paths

Find your plugin's cache path:

cat ~/.claude/plugins/installed_plugins.json | grep installPath

This returns something like:

"installPath": "/home/<user>/.claude/plugins/cache/<plugin>/<name>/<version>"

Note the full path — you'll symlink this directory.

Step 2: Back Up the Cached Version

mv ~/.claude/plugins/cache/<plugin>/<name>/<version> \
   ~/.claude/plugins/cache/<plugin>/<name>/<version>.bak

Step 3: Create Symlink to Working Copy

Point the cache path to your local development clone:

ln -s /path/to/your/working/copy \
   ~/.claude/plugins/cache/<plugin>/<name>/<version>

Important: Symlink to the directory where you actually edit code, not the marketplace clone that Claude Code manages.

Step 4: Verify

ls -la ~/.claude/plugins/cache/<plugin>/<name>/
# Should show: <version> -> /path/to/your/working/copy

Development Workflow

Once the symlink is in place:

1. Edit skills, commands, or references in your working copy
2. Restart Claude Code — exit the current session and start a new one. Plugins load at session start; changes are not hot-reloaded.
3. Test your changes — invoke the skill or command as a user would
4. Iterate — repeat steps 1-3

No commits, pushes, or version bumps needed during development.

Reverting to the Released Version

# Remove the symlink
rm ~/.claude/plugins/cache/<plugin>/<name>/<version>

# Restore the backup
mv ~/.claude/plugins/cache/<plugin>/<name>/<version>.bak \
   ~/.claude/plugins/cache/<plugin>/<name>/<version>

Caveats

Plugin auto-updates may break the symlink

Claude Code periodically checks for plugin updates. An auto-update could:

• Replace the symlink with a fresh cache copy
• Write updated files into the symlinked directory (i.e. into your working copy)

If your symlink stops working after you didn't touch it, check whether an auto-update ran and re-create the symlink.

Working copy differs from a clean cache

The cache is normally a clean snapshot — no .git/, no IDE files, no uncommitted work. Your symlinked working copy includes all of that. This is generally harmless — the plugin loader reads markdown files and ignores unknown entries — but be aware:

• New files that reference structures you haven't created yet may cause confusing behavior
• .git/, .DS_Store, node_modules/, and similar directories are exposed but ignored

Restart is required

Claude Code loads plugins at session start. There is no hot-reload. After every change, exit and restart the CLI.

Testing a Specific Version or Branch

cd /path/to/your/working/copy
git checkout <branch-or-tag>

# Restart Claude Code — the symlink still points here,
# so it will load whatever is checked out

To compare against the released version, temporarily revert the symlink (see above) and restart.

Quick Reference

# Setup (one-time)
CACHE=~/.claude/plugins/cache/<plugin>/<name>/<version>
WORKDIR=/path/to/your/working/copy

mv "$CACHE" "${CACHE}.bak"
ln -s "$WORKDIR" "$CACHE"

# Develop (repeat)
# 1. Edit files in $WORKDIR
# 2. Restart Claude Code
# 3. Test

# Teardown (when done)
rm "$CACHE"
mv "${CACHE}.bak" "$CACHE"