Last week I had to reuse homemade skills on different project. I very much liked the AI proposed solution and it works quite well: ship as a plugin and add your git repo as a marketplace.

The installation is effortless and I don't have to mess with symlinks as I may be working with same codebase on different platforms which would make things.. different.

  codex plugin marketplace add "https://path-to-my-git-repo"
  codex plugin add agent-tools@mycompany

  claude plugin marketplace add "https://path-to-my-git-repo"
  claude plugin install agent-tools@mycompany

Let the AI generate .json files for marketplace.

Haven't got to these bits yet, but I'm sure they will work as easy as install does.

  claude plugin marketplace update mycompany
  claude plugin update agent-tools@mycompany