The Agent Skills Directory

[EXTERNAL_DOWNLOADS]: The skill references official development tools and libraries necessary for the browser extension lifecycle.
Recommends the installation of the web-ext CLI and webextension-polyfill from standard, well-known package registries.
Provides links to authoritative documentation from MDN (Mozilla Developer Network) and the Extension Workshop.
[COMMAND_EXECUTION]: Includes CLI usage examples for typical development workflows.
Provides commands for web-ext run, web-ext lint, web-ext build, and web-ext sign to manage the extension development process.
These are standard commands for the intended development purpose of the skill.
[SAFE]: The skill explicitly emphasizes security best practices and compliance with platform safety guidelines.
It includes warnings against using eval(), remote script execution, and code obfuscation, noting that these patterns are security risks and lead to rejection by the Add-ons Mozilla (AMO) review process.
Provides clear instructions on implementing a strict Content Security Policy (CSP) and adhering to the principle of least privilege regarding manifest permissions.

firefox-extension