github-actions-efficiency

github-actions-efficiency is an agent skill from the github/awesome-copilot collection that audits the efficiency of GitHub Actions workflows and recommends fixes that reduce CI minutes and cost. It is a lean entry point: it inspects the repository, identifies where the waste comes from, and loads only the reference material the current task needs, rather than every rule at once. The areas it looks at include caching, concurrency settings that cancel superseded runs, path filters that skip workflows when unrelated files change, reducing matrix builds, and optimizing individual jobs. It also helps when a repository has no workflows, by setting a baseline for a new CI configuration. If the agent cannot run shell or gh commands, the skill asks for the contents of the workflow directory and a recent list of runs, and it labels its findings as static analysis that has not been confirmed by live runs. The skill is useful for teams whose CI bill or waiting time has grown, and for maintainers who want a review of their workflows. Changes to CI should be tested on a branch, because a workflow that skips a needed check can let broken code merge. The skill is installed with the skills CLI from the github/awesome-copilot repository. Its skills.sh page showed about 1.9K installs and passing results from three security audits at the time of the scan.…