Claude Code mod
smart-compact
Keeps an idle session's prompt cache warm, or compacts it just before it expires, whichever is cheaper, and says on the status line whether the next prompt is ready or cold.
Install
/plugin marketplace add HarzerHeribert/claude-modpack
/plugin install smart-compact@claude-modpackMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: drives Claude, reads the transcript, reads the prompt box, reads mod state, persists state, draws, other: $.statusline.remove, other: $.statusline.set
- Sees
- classic hooks, compaction
- Draws in
UserMessage- Hooks
session.startclassic.SessionStartsession.endturn.startturn.stepturn.completeui.rendersession.compactcommand.run
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- HarzerHeribert/claude-modpack
- Folder
smart-compact- Marketplace
claude-modpack- Author
- HarzerHeribert
- License
- MIT
- Last updated
- 28 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is smart-compact?
Keeps an idle session's prompt cache warm, or compacts it just before it expires, whichever is cheaper, and says on the status line whether the next prompt is ready or cold. It is a mod for Claude Code, from HarzerHeribert/claude-modpack on GitHub.
What can the smart-compact mod access?
Its widest reach is "writes or runs" (drives Claude, reads the transcript, reads the prompt box, reads mod state, persists state, draws, other: $.statusline.remove, other: $.statusline.set). It sees classic hooks, compaction. It draws in UserMessage. Like any mod, it runs with your permissions.
How do I install smart-compact?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add HarzerHeribert/claude-modpack and then /plugin install smart-compact@claude-modpack.
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