Jeffrey’s Skills is a $20/month subscription to a bunch of Agent Skills created by Jeffrey Emanuel, who is pushing this stuff hard. He just added a security-audit-for-saas skill, which sounds like a great idea.
agent-ci runs GitHub Actions locally.
CSS Studio is a (commercial) in-browser design tool designed to let you visually edit and work with your agent on the code.
How to get better at guitar suggests learning to play better by writing out your own tabs rather than playing from tabs others have written. Requires you to listen more closely.