Rehydra

Detects and reversibly anonymizes PII and secrets before they reach an LLM, then rehydrates on the way back.

PluginBrowser extensionfreeglobal

Rehydra is a free, open-source tool that detects personal data and secrets in prompts sent to LLMs and replaces them with reversible placeholders, restoring the real values only when a tool call or file write actually needs them. It runs on-device with no cloud calls, and ships as a CLI proxy for coding agents, a Chrome extension for ChatGPT and Gemini, and an embeddable library. It's aimed at developers and privacy-conscious users who work with sensitive data through LLM-based tools.

Website

Full match profile

Behind the summary, Matchbox keeps a richer profile of Rehydra - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

Claim Rehydra to unlock →

Something wrong with this listing — dead link, not a real product, wrong info?

Try Matchbox with your own problem

Describe what is not working - we’ll show you whether Rehydra (or something else) actually fits.

Try a problem