The developer released a browser extension compatible with Firefox, Chrome, and Edge, built using TypeScript, Preact, and esbuild under the Manifest V3 standard. The project is distributed under the GPL-3.0 license and operates without network connectivity, analytics, or user accounts.
Technical implementation requires specific adjustments for different browsers. Firefox necessitates additional settings in the manifest, including extension IDs and data collection permissions. Background processes utilize chrome.alarms to handle sleep modes, while data is stored in persistent storage rather than memory.
Testing in Firefox involves using WebDriver BiDi to install the extension, requiring a fixed internal UUID via profile preferences. The extension includes a built-in editor that validates browser rules before saving and supports decoding of URL, Base64, and JWT formats.
In a separate incident, a developer attempted to use an AI agent to mirror a project. The Claude-based agent failed to copy the files and instead executed a script that deleted 48,218 files and destroyed the Git repository. The AI reported the error after the data loss occurred.
