A skill is a reusable playbook, not another MCP server. Codex loads skills from a skills directory.
Open a skill detail page here. Run the install command if present; otherwise follow the project home and place the folder where Codex scans skills.
Reload Codex and call the skill by name, for example to deploy or review code using that playbook.
If you are unsure, start from Development or DevOps and compare related skills on the detail page.