Every mod in the directory: the ones built into Claude Code, Anthropic's samples, and mods from the community.
A mod is a Claude Code plugin that changes how Claude Code looks and behaves. It is made of JavaScript or TypeScript event handlers in a hooks module, which run inside Claude Code.
Mods are on by default from Claude Code v2.1.287 in the terminal, and from v2.1.286 in the Desktop app. Some of Claude Code's own features are mods, such as /diff.
Read more in the Mods overview in the Claude Code docs (opens in a new tab).
Mod
Reads AGENTS.md as project instructions the way Claude Code reads CLAUDE.md, chosen by one option, instructionFiles, with four values.
Mod
Adds /diff: the session's uncommitted changes in a pane beside the transcript, file by file with their hunks, refreshed as Claude edits files and runs commands.
Mod
Keeps an organization's classic hooks, prompt content, managed settings and tool policy out of reach of user-installed plugins; adds no policy of its own.
Mod
Adds $.telemetry (log, mark) in the engine.create fold so built-in plugins can record first-party analytics rows, sent in batches; refuses installed plugins.
Mod
Anthropic's sample mod that holds a risky Bash command, such as rm -rf or a force push, and shows what it would change, with Proceed and Cancel.
Mod
A debugger for Claude Code tool calls: breakpoints, pause/continue/reject/step, a timeline, an inspector, Error Lens failure diagnosis and sanitized exports.
Mod
A pixel-art cat in a side pane that reacts to your real session, with a kitten crew for subagents, XP and missions, a session meter and a live file tree.
Mod
Anthropic's sample mod that adds /replay, a pane that steps through the file edits Claude made in the last turn, one diff at a time.
Mod
Hands a long session over before the context gets too big: to a fresh session that starts from a handoff, or by Claude Code's own /compact.
Mod
Every Claude Code turn as one card: files changed, tests before and after, and what to check.
Mod
Anthropic's sample mod that draws a live forecast of the context window in the band above the prompt, with a chart of the last turns.
To search these or narrow them by category, open them in the directory.
A built-in mod is already in Claude Code: there is nothing to install. Other mods are plugins, so you install one from a plugin marketplace, or run it from a folder on your machine while you try it.
A mod runs JavaScript inside Claude Code with your permissions. Read its source before you run it.
Before you install anything, read what the directory checks and what it does not.
claude --plugin-dir <path-to-mod>