Plugins, extensions and mods for coding agents

Claude Code plugins

A plugin is a directory of skills, agents, hooks, MCP servers and other components that Claude Code installs and loads as one unit, usually from a marketplace.

/plugin install <plugin>@<marketplace>

Official directory: claude-plugins-official

Codex plugins

Plugins shared by ChatGPT and Codex package skills, MCP servers, browser extensions and hooks, and are installed from the Plugins Directory or a marketplace source.

Plugins tab in the ChatGPT desktop app, open the plugin's details, select the plus button

Official directory: Plugins Directory

Gemini CLI extensions

Extensions package prompts, MCP servers, custom commands, themes, hooks, subagents and agent skills, and install from a GitHub URL or local path.

gemini extensions install <source>

Official directory: Gemini CLI extension gallery

Cursor plugins

Plugins bundle rules, skills, agents, commands, MCP servers and hooks, and install from the Cursor Marketplace or team marketplaces.

Customize in the sidebar, find the plugin, select Install, choose project or user scope

Official directory: Cursor Marketplace

GitHub Copilot CLI plugins

Copilot CLI plugins package custom agents, skills, hooks, MCP server and LSP server configurations, installed from marketplaces.

copilot plugin install PLUGIN-NAME@MARKETPLACE-NAME

Official directory: copilot-plugins

Factory Droid plugins

Droid plugins package skills, slash commands, droids, output styles, hooks and MCP servers, installed from plugin marketplaces.

droid plugin install <plugin@marketplace> --scope user

Official directory: Factory-AI/factory-plugins

OpenHands plugins

OpenHands plugins bundle skills, hooks, MCP configuration, agent definitions and slash commands, loaded from local paths or GitHub sources.

openhands --plugin github:org/plugin-repo

Official directory: OpenHands/extensions

Junie CLI extensions

Junie extensions are reusable bundles of skills, MCP servers, subagents, slash commands, guidelines and hooks installed from marketplaces.

/extensions install <extension-name>

Official directory: JetBrains/junie-extensions

Kiro powers

A power is a directory that packages Agent Skills, MCP server configuration and Kiro-specific extensions such as steering files, installed in one click.

Powers panel, select a power, choose + Install

Official directory: Kiro powers

Qwen Code extensions

Qwen Code extensions package prompts, MCP servers, subagents, skills and custom commands, and can also install converted Claude Code plugins and Gemini CLI extensions.

qwen extensions install <source>

OpenCode plugins

Plugins are JavaScript or TypeScript modules that subscribe to events and add custom tools, loaded from local plugin folders or npm packages listed in config.

Add the npm package to the "plugin" array in your OpenCode config, or place .js or .ts files in .opencode/plugins/

Amp plugins

Amp plugins are TypeScript or JavaScript modules that handle events, add tools and commands, show UI and bundle skills.

amp plugins add <url>

Cline plugins

Cline plugins are TypeScript or JavaScript packages that add custom tools, lifecycle hooks and slash commands.

cline plugin install <source>

Official directory: cline/plugins

pi packages

pi packages bundle extensions, skills, prompt templates and themes, published to npm or git and installed with pi install.

pi install npm:<package>

Official directory: Package Catalog

Letta Code mods

Mods are local code files or npm packages that add commands, tools, event hooks, permission policies, providers and UI to Letta Code.

letta install npm:@scope/package-name

Official directory: Mods catalog

Hermes Agent plugins

Hermes plugins register tools, lifecycle hooks, slash commands, CLI commands and bundled skills, installed from a curated catalog or a Git URL.

hermes plugins install <name>

Official directory: Plugin Catalog

OpenClaw plugins

OpenClaw plugins add channels, model providers, CLI backends, tools, skills, hooks and other runtime capabilities, discovered mainly through ClawHub.

openclaw plugins install clawhub:<package>

Official directory: ClawHub

goose extensions

goose extensions are MCP-based add-ons that connect goose to tools and apps, added through the desktop app, goose configure, deeplinks or config.yaml.

goose configure, then select Add Extension

Official directory: Browse Extensions

Zed extensions

Zed extensions add languages, themes, icon themes, debuggers, snippets, MCP servers and agent servers to the editor.

Zed > Extensions (cmd-shift-x on macOS, ctrl-shift-x on Linux and Windows) opens the Extension Gallery

Official directory: Extension Gallery