FAQ
These are the questions people usually ask before installing Headroom or recommending it to a team.
Headroom is a menu bar app that reduces Claude Code token usage by reversibly compressing tool output, boilerplate, and large inputs before Claude Code stores them in the conversation. The plan you already pay for lasts longer, and Claude can pull the original content back if it needs it.
That is the goal. Headroom is built to remove repetitive or low-signal tokens while preserving the information Claude Code needs to answer correctly. The site highlights benchmark results showing strong quality retention across reading comprehension, tool calling, HTML recall, and JSON-heavy workloads.
No. Headroom's compression is reversible. When it shrinks a tool output or an older message, it includes a small retrieval tool that lets Claude pull back the original content on demand, so nothing is actually thrown away. You simply stop paying for tokens Claude does not need on every turn.
No. Headroom is designed to preserve the cached prefix of your conversation. Tool outputs are compressed before they enter the conversation history, and stale messages later in the thread are compressed without altering the prefix Anthropic has already cached. The maintainer of the underlying Headroom CLI has reported around a 97% prefix cache hit rate from production usage.
Production data from the underlying Headroom CLI puts median overhead at roughly 52 milliseconds per request, on par with a single network round-trip and small compared to the seconds Claude itself takes to respond. Most people do not notice it.
No. Headroom is privacy-first and runs locally on your machine, so your prompts do not need to be shipped to a Headroom server for optimization.
Headroom is designed for developers who rely on Claude Code and want about 2x as much usage on the Claude plan they already pay for by cutting token waste and keeping large codebase sessions efficient without changing their workflow.
Yes. Sub-agents in Claude Code lose the parent session's prefix-cache benefit and can hit their own token limits quickly once tool output piles up. Headroom compresses sub-agent tool output the same way it compresses the main session, so the same task fits in fewer tokens.
Headroom currently offers a macOS app.
Yes. Headroom for desktop is based on the open-source Headroom CLI project (https://github.com/chopratejas/headroom/), and headroom-desktop is created with the endorsement of the Headroom CLI maintainer.
Start with the free tier or trial, compare token usage before and after installing it, and look at sessions that involve verbose tool output like code search, logs, HTML, or long documentation, since those are the areas where optimization tends to help most. If your normal workload lands around 50% lower token usage, that is effectively about 2x as much Claude Code usage on the Claude plan you already pay for.
Read the guide to reducing Claude Code costs, the Claude Code usage guide, or the Claude Code usage limits page if you keep hitting the 5-hour cap. If you want context on why the bill feels high, see why Claude Code is so expensive or how to reduce Claude API costs. Or check the benchmark section and install Headroom to measure on a session of your own.
macOS
