karanb192/cache-tax

README preview

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# Cache Tax for Claude Code

**Keep Claude Code's prompt cache warm during breaks.**

Cache Tax is a Claude Code mod that refreshes your prompt cache while you step away and shows the estimated rewrite cost before a cold send. Run `/keepwarm 90m` before a break. Pings cost tokens; choose a window you expect to return within.

**[Install](#install)** · [Website](https://cachetax.aidojo.si/) · [How it works](#how-it-works) · [Costs and limits](#cost-and-the-plan-limit-question) · [Commands](#commands)

![Real recording of cache-tax stopping a cold send with a $6.61 estimate](site/assets/refusal.gif)

A two-line recap in a 330k-token session triggered a **$6.61 estimate**. After resending, the reported cache write was **$6.28**. Recorded on 2.1.1; current wording says “up to” the estimated token count. These are API-equivalent costs, not extra subscription charges.

## Install

Needs [Claude Code 2.1.287 or later](https://code.claude.com/docs/en/plugins/mods/overview#turn-mods-on-or-off), a one-hour cache and Claude Code left running. Mods are on by default. Pings cost tokens, including uncapped output.

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