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Headroom

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Overview

Monitor your AI chat context-window usage in a native side panel.

Headroom shows your AI chat context-window usage in the browser side panel — green, yellow, or red — so you know when the AI is about to forget. No account, no setup. AI models have a fixed context window. When it fills up, earlier conversation is silently dropped. Headroom gives you a real-time gauge so you know when to start fresh. Auto-detects 7 major AI chat platforms including DeepSeek, ChatGPT, and Gemini. See all supported platforms at https://github.com/ZM-BAD/headroom. Features: customizable thresholds, per-round token breakdown, a six-writing-system estimation engine with calibrated coefficients, and privacy-first design — conversation text read then discarded, only counts stored. Optional Upstash sync: works offline by default, but connect your own free Upstash Redis instance (256 MB, 500K requests/month — far beyond typical personal use) and your settings plus token counts follow you across devices. Data lives in your private storage; credentials never leave the browser. No Headroom server.

Details

  • Version
    0.1.0
  • Updated
    August 25, 2026
  • Offered by
    ZM-BAD
  • Size
    79.43KiB
  • Languages
    10 languages
  • Developer
    Email
    prozm.bad@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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