Claude Code mod
cold-cache
Warns above the prompt when a conversation's prompt cache has gone cold, and offers a Haiku-written handoff or compaction instead of an expensive uncached re-read.
Install
/plugin marketplace add mrkshw/cold-cache
/plugin install cold-cache@cold-cacheMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: writes files, drives Claude, writes the prompt box, writes the clipboard, reads env vars, reads the transcript, reads mod state, persists state, draws
- Sees
- every prompt, compaction
- Draws in
AbovePrompt- Hooks
session.startprompt.submitturn.completesession.compactui.render
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
- mrkshw/cold-cache
- Folder
.- Marketplace
cold-cache- Author
- Mark Shaw
- License
- MIT
- Last updated
- 11 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is cold-cache?
Warns above the prompt when a conversation's prompt cache has gone cold, and offers a Haiku-written handoff or compaction instead of an expensive uncached re-read. It is a mod for Claude Code, from mrkshw/cold-cache on GitHub.
What can the cold-cache mod access?
Its widest reach is "writes or runs" (writes files, drives Claude, writes the prompt box, writes the clipboard, reads env vars, reads the transcript, reads mod state, persists state, draws). It sees every prompt, compaction. It draws in AbovePrompt. Like any mod, it runs with your permissions.
How do I install cold-cache?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add mrkshw/cold-cache and then /plugin install cold-cache@cold-cache.
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