Claude Code plugins and mods by Sergiy Dybskiy. A mod is a plugin with code hooks that run inside Claude Code; a plugin can also hold skills, commands, agents and MCP servers.
| Plugin | Kind | What it does |
|---|---|---|
| image-diet | mod | Shrinks large images from Read and MCP tools before they enter Claude's context. About 59% fewer image tokens, same answers. |
| handoffs | mod | Turns subagents on, off, or onto your main model in the middle of a session, with /handoffs. |
In a Claude Code session:
/plugin install <plugin> --marketplace sergical/claude-plugins
Or add the marketplace once and install by name:
/plugin marketplace add sergical/claude-plugins
/plugin install image-diet@sergical
Mods need Claude Code v2.1.287 or later.
If you installed image-diet from sergical/image-diet before, remove that marketplace and install again from this one. The marketplace is now named sergical.
.claude-plugin/marketplace.json lists every plugin
plugins/<name>/ one folder per plugin, with its own plugin.json and README
To add a plugin: create plugins/<name>/, add an entry to marketplace.json, and run the checks below.
claude plugin validate . --strict
claude plugin validate plugins/<name> --strict
claude plugin test plugins/<name>
CI runs these for every plugin on each push.
MIT