As users increasingly turn to Claude Code for enhancing their workflows, it is crucial to ensure the skills being installed are both functional and secure. A recent review of 783 skills highlights three essential checks to perform before installation. First, users should examine the SKILL.md file to confirm it contains real steps. If the file includes only a one-line stub, a reference to another document, or unreadable ciphertext, it indicates that there is nothing substantive to install. This initial check helps prevent the installation of potentially useless or harmful skills.

The second check involves scrutinizing where user data will be directed. Users are advised to search the SKILL.md file for any URLs, keys, or sign-up links that might indicate data sharing with external services. While calling an outside service can be acceptable, it is essential that users are aware of this action and have consented to it. This transparency is vital for maintaining user trust and data security as they navigate the installation process.S1

Lastly, users must consider compatibility with their own systems. This entails checking for hard-coded paths, references to someone else's Slack channel, or instructions that require disabling the sandbox environment. These factors can significantly affect the functionality of the skills on individual machines. Ensuring compatibility not only enhances user experience but also safeguards against potential technical issues that could arise post-installation.S1

In addition to these checks, the introduction of Addy Osmani’s Agent Skills for Claude Code has provided users with 25 skills and 9 commands that have been tested for safety and functionality. This development reflects a growing trend in the AI landscape where users are encouraged to rigorously evaluate the tools they choose to integrate into their workflows, ensuring both effectiveness and security in their applications.S2