Claude Code mod
cache-tax
Warns before a message that would re-read the whole conversation on a cold prompt cache, shows the cache state in the status line, and can keep it warm with /keepwarm.
Install
/plugin marketplace add Fraktalis/claude-mods
/plugin install cache-tax@alex-modsMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: drives Claude, writes the prompt box, reads the prompt box, reads mod state, draws
- Sees
- every prompt
- Hooks
session.startturn.stepturn.completeprompt.submitcommand.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
- Fraktalis/claude-mods
- Folder
plugins/cache-tax- Marketplace
alex-mods- Author
- Alexandre
- Last updated
- 9 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is cache-tax?
Warns before a message that would re-read the whole conversation on a cold prompt cache, shows the cache state in the status line, and can keep it warm with /keepwarm. It is a mod for Claude Code, from Fraktalis/claude-mods on GitHub.
What can the cache-tax mod access?
Its widest reach is "writes or runs" (drives Claude, writes the prompt box, reads the prompt box, reads mod state, draws). It sees every prompt. Like any mod, it runs with your permissions.
How do I install cache-tax?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add Fraktalis/claude-mods and then /plugin install cache-tax@alex-mods.
More context & usage mods
cache-tax
cGradying/claude-code-cockpit
A Claude Code mod that keeps the one-hour prompt cache warm during breaks and stops a cold send once with its estimated rewrite cost. Warming uses model requests and costs tokens. Requires Claude Code 2.1.287+.
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wipeer/claude-mods
Keeps the one-hour prompt cache warm during breaks and stops a cold send once with its estimated rewrite cost; over Remote Control its warnings and keepwarm state are posted as notices. Warming uses model requests and costs tokens.
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Berkay2002/berkays-mods
Keeps the one-hour prompt cache warm during breaks (/keepwarm) and shows a cold send's estimated rewrite cost; this copy warns by default instead of refusing. Warming costs tokens. Copy of karanb192/cache-tax 2.2.1.
cache-tax-plus
Verselo-Orbit/claude-mods
Stoppt eine teure Nachricht an einen kalten Prompt-Cache einmal und zeigt vorher den Preis. /keepwarm hält den Cache in Pausen warm (kostet Tokens).
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AhmedNazihX/claude-mods
A band above the prompt showing whether the prompt cache is warm, how much of the last turn it served, and what the turn cost
cache-tax-slim
GambetaClub/model-router
A Claude Code mod that keeps the one-hour prompt cache warm during breaks and stops a cold send once with its estimated rewrite cost. Warming uses model requests and costs tokens. Requires Claude Code 2.1.287+.
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