The Agent Skills Directory

[NO_CODE]: The skill does not contain any executable scripts, binaries, or active automation logic. It functions as documentation and an installation guide for external tools.
[EXTERNAL_DOWNLOADS]: The skill instructs users to install external packages from a well-known source (GitHub) using the npx skills command. The target repository belongs to a recognized developer in the web performance community.
[COMMAND_EXECUTION]: The skill provides standard installation commands for the user to run. There are no hidden or automated background commands detected.
[DYNAMIC_CONTEXT_INJECTION]: The skill mentions using the ! prefix in Claude Code to send commands, but it does so as a legitimate user instruction for installation purposes rather than as an automated injection vector.

addyosmani-quality