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User JavaScript and CSS version history - 2 versions

User JavaScript and CSS by tenRabbits

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User JavaScript and CSS version history - 2 versions

  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 4.1.0

    Released 1 Oct 2026 - 2.38 MB
    Works with firefox 136.0 and later
    AI agent tools (experimental). Let an agent on your computer — Claude Code, Cursor, Codex, VS Code and other MCP clients — manage your rules. Off by default; enable in Settings → MCP. The connection is local only: the extension connects to ws://127.0.0.1:8767, served by the user-js-css-mcp server your agent starts. Nothing leaves your machine; both sides verify a shared secret. Turn it off with the same switch. Server: https://www.npmjs.com/package/user-js-css-mcp

    Source code released under All Rights Reserved

    Download Firefox and get the extension
    Download file

  • Older versions

    Version 3.1.3

    Released 13 Mar 2026 - 2.33 MB
    Works with firefox 136.0 and later

    Source code released under All Rights Reserved

    Download file