Taxonomy

Plugin Categories

Official Harness capabilities map cleanly onto plugin categories: models, tools, skills, sessions, sandboxes, storage, loops, scheduling, UI. Community packages cluster around UI, vision, TUI, agent teams, desktop, and workflow.

Web UI

Skins, sidebars, tokens, pets, and layout upgrades for the official Web UI.

Vision

Give a text-only model eyes: OCR, screenshot Q&A, UI restore, pixel diff.

TUI / Terminal

Claude Code-style terminals, native PTY workbenches, and CLI shells.

Agent & Teams

Sub-agents, messaging, memory, budgets, and multi-agent orchestration.

Desktop

macOS / Tauri workbenches that wrap the harness in a native window.

Tools

File mentions, notifications, custom tools, browser bridges, rewind.

Workflow

Plan/execute loops, UltraCode-style pipelines, and session recovery.

Directories

Other catalogs and in-app marketplaces. Useful, but not plugins themselves.