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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallFind candidate GitHub Actions in the workflow editor’s Marketplace sidebar or on GitHub Marketplace, then evaluate each one for task fit, source and data handling, maintenance, permissions, version security, and compatibility with your repository’s policies. Use an action for a step-level task; choose a reusable workflow when you need to share a multi-job process.
Where to find GitHub Actions
GitHub Marketplace is the central directory for Actions. You can also search and browse featured Actions and categories from the Marketplace sidebar in the repository’s workflow editor. Depending on how it is distributed, an Action can come from the same repository, another public repository, or a published Docker container image. GitHub’s guide to finding and customizing Actions explains these options.
The editor may show community star counts and a verified-creator badge. Treat these as discovery clues, not proof that an Action is safe or suitable: stars can change, and creator verification is an identity signal rather than a security guarantee.
Choose an action or a reusable workflow
Use an action for a job step
An action is a discrete building block used within a job—for example, a step that performs a defined task. A reference to an Action in another repository uses the form {owner}/{repo}@{ref}. Actions may also be stored in the current repository or distributed as published Docker images. Check the documented inputs, outputs, runtime, and environment assumptions against the job you need to perform.
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Use a reusable workflow for a multi-job process
A reusable workflow shares a larger workflow configuration, including multiple jobs and steps. It is a YAML file in .github/workflows whose on declaration includes workflow_call; it can declare inputs and secrets for callers to provide. GitHub distinguishes reusable workflows from composite actions, which bundle steps to run within a job. A reusable workflow can be referenced at a specific SHA to keep callers on the same code revision. See GitHub’s reusable workflows documentation.
Use a workflow template as a starting point
An organization’s workflow template gives people a prepared configuration from which to create a workflow. A template can call a reusable workflow, but it is not itself a Marketplace Action. The distinction matters when deciding whether to reuse a step, a whole process, or merely a starting configuration.
Evaluate a candidate before adding it
- Define the job and its boundaries. List what the step must do, the inputs and outputs it needs, its runtime and environment assumptions, and what repository data or credentials it could access. Compare those requirements with the Action’s documented interface and behavior. GitHub’s workflow syntax reference covers workflow structure and related syntax, events, and contexts.
- Inspect source code and data flow. Review what the Action reads, changes, sends, or logs. In particular, check how repository contents and secrets are handled and whether anything is transmitted or exposed unexpectedly. GitHub recommends auditing an Action’s code as part of secure use; a verified-creator badge does not replace that review. See GitHub’s secure-use guidance.
- Review maintenance and release practices. Look for recent maintenance and security advisories, and understand how releases are published. GitHub’s maintainer guidance recommends semantic release tags and keeping major and minor tags current. Tags are convenient, but they can be moved; when you need an immutable reference, use a full commit SHA rather than relying on a tag. See GitHub’s guidance on releasing and maintaining Actions.
- Check permissions and secret exposure. Set the default
GITHUB_TOKENpermission to read-only where possible, then grant only the permissions required at the job level. Consider which secrets a step can access, and avoid exposing sensitive values to untrusted code. A candidate that needs broader access than its task warrants deserves closer scrutiny. - Confirm repository and organization policy. Administrators can restrict which Actions and reusable workflows are allowed, including through selected repositories or patterns, and can require full-length SHAs. Policy settings may also limit who can execute workflows and which events trigger them. Check the target repository’s actual settings before adopting a dependency: a suitable Action can still be blocked by policy. GitHub documents repository Actions settings, organization Actions restrictions, secure-use policy considerations, and workflow policy insights.
Pin third-party Actions to a full commit SHA
For a third-party Action, prefer a verified full-length commit SHA from the Action’s own repository. GitHub says pinning to a full-length SHA is currently the only way to use an Action as an immutable release. A tag such as a major-version tag is easier to read and commonly used, but it can be moved or deleted if the repository is compromised. Confirm that the SHA belongs to the genuine Action repository, not a fork.
Repository and organization settings can require full-length SHAs for Actions. The repository settings documentation notes an exception: reusable workflows may still be referenced by tag under that setting. Check the applicable settings and the reusable-workflow reference rules before assuming the same pinning requirement applies to both. See GitHub’s secure-use reference and repository Actions settings.
Compare candidates consistently
When two Actions or workflows could do the same job, assess them against the same criteria rather than relying on popularity alone:
- Task fit: Does the documented interface meet the job’s actual needs?
- Source and data access: Can you inspect the code and account for what it reads, transmits, or logs?
- Maintenance: Is there recent maintenance, a clear release process, and attention to security advisories?
- Permissions: Does it work with the least access practical, and are its secret needs justified?
- Reference security: Can you pin the intended code revision with a full SHA?
- Policy compatibility: Does the repository allow it, and do its SHA, event, and actor rules permit the intended use?
- Reuse level: Is the requirement one job step, a multi-job workflow, or a template for creating new workflows?
Marketplace stars are a changing per-Action signal, not a substitute for these checks or a topic-wide measure of quality.
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