Plugins extend Claude Code and Codex with extra commands, hooks, and MCP servers. Quorum Terminal gives both agents a single panel to browse, install, enable, and remove plugins — and to manage the marketplaces those plugins come from. Open it from the right dock or with ⌘ ⇧ P.
What a plugin is
A plugin is a package an agent loads to add capabilities — slash commands, lifecycle hooks, or MCP servers — that then run on your machine with your permissions. Each plugin belongs to a marketplace (its source) and carries a name, description, and author.
Claude and Codex keep separate plugin sets, so the panel groups them under a Claude and a Codex section. A segmented control (All / Claude / Codex), a status filter (all, enabled, disabled, installed, available), and a free-text search box narrow the list. Codex plugins are read-only here: they are listed for reference but installed and managed through the Codex CLI itself.
Plugin management runs the agent CLIs, so it requires the Claude Code and Codex integrations to be enabled under Settings ▸ Integrations. With them off, the panel shows a note instead of a catalog.
Marketplaces
A marketplace is a source of plugins. Quorum Terminal recognizes three kinds:
| Kind | Source |
|---|---|
| Official | The Anthropic claude-plugins-official catalog, provisioned automatically |
| Custom | A owner/repo, a Git URL, or a local path you add yourself |
| Local | Plugins already present on disk under your agent's marketplace directory |
Claude and Codex each have their own marketplace list with its own add / update / remove controls. When you add a custom marketplace, Quorum Terminal asks you to confirm first — a marketplace's plugins can run code, so only add sources you trust. For Codex you can optionally pin a ref (branch, tag, or commit) and restrict to specific paths.
Pin a tag or commit when adding a Codex marketplace if you want a reviewed, reproducible version rather than the moving default branch.
Installing and enabling
Pick a plugin and use the action on its card:
- Install / Uninstall — fetches or removes the plugin. Both ask for consent because installing lets the plugin run hooks, commands, and MCP servers with your permissions; uninstalling leaves its stored data in place.
- Enable / Disable — turns an installed plugin on or off without removing it. No prompt.
Operations stream live progress and can be cancelled mid-run; on completion the card is re-read from disk so what you see matches reality. Some changes prompt you to restart Claude Code to take effect.
Quorum Terminal is macOS-only and runs entirely on your machine — installing or browsing plugins never sends your code, prompts, or usage anywhere.
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