Use Cases

Core use case is GitHub repository governance as code: define the expected repository configuration in YAML, detect drift, preview changes, and enforce it. It currently covers branch protection, GitHub Rulesets, PR requirements, required checks, branch hygiene, and several repository security settings.

Use case	What repo-policy does
1. Branch protection as code	Define protection for main, develop, release/*, etc. instead of configuring each branch manually in GitHub UI.
2. Repository compliance audit	Run repo-policy audit to determine whether the live repository matches the declared policy. Useful for periodic governance checks.
3. Configuration drift detection	Detect when someone manually changes branch protection, required approvals, status checks, or supported repo settings.
4. Pull-request governance	Require PRs, minimum approvals, CODEOWNER review, stale-review dismissal, and last-push approval.
5. CI quality gates	Declare checks such as build, test, sast, sca, or terraform-plan as mandatory before merge.
6. Protect production branches	Prevent force-pushes and deletion of main or release branches, require signed commits, and enforce linear history.
7. GitHub Rulesets management	Use modern GitHub Rulesets rather than classic branch protection on selected branches.
8. Safe migration to Rulesets	Detect stale classic protection after switching a branch to Ruleset-based enforcement.
9. Repository security baseline	Enforce supported settings such as Dependabot alerts, automated security fixes, secret scanning, push protection, and private vulnerability reporting.
10. Pre-change review / change management	Run plan before apply to show exactly what will be added, removed, or modified.
11. Automated remediation	Run apply to reconcile the repository with policy.yml, followed by an independent verification of the resulting state.
12. GitOps-style repository administration	Treat repository administration similarly to infrastructure configuration: policy changes go through Git commits and PR review.
13. Policy versioning and audit history	Because policy.yml lives in Git, you get blame/history showing who changed repository governance, when, and why.
14. Developer self-service	Developers propose governance changes through PRs rather than requesting an admin to manually modify repository settings.
15. Security-team guardrails	Security/platform teams can establish baseline requirements such as signed commits, secret scanning, and mandatory security checks.
16. Platform-engineering golden repository	Put a standard policy.yml into repository templates so newly created services start with the expected controls.
17. Environment-specific branch governance	Give main, develop, release, and maintenance branches different levels of protection.
18. Incremental adoption on existing repositories	Managed-scope behavior means you can govern only selected branches/settings without taking control of everything in the repository.
19. Strong desired-state enforcement	Enable strict mode where selected configuration should exactly match the declared policy.
20. Scheduled compliance monitoring	Run the GitHub Action daily/weekly and fail when repository configuration has drifted. The project itself already uses this self-governance pattern. ([GitHub][1])

The validate → audit → plan → apply lifecycle is particularly useful because validation can happen offline, audit is read-only, plan exposes the intended diff, and apply subsequently verifies the live state again.

Where I think the product becomes particularly useful

A strong enterprise scenario would look like this:

Organization security baseline
        │
        ▼
repository-policy.yml
        │
        ├── PR approvals
        ├── required CI checks
        ├── signed commits
        ├── force-push protection
        ├── deletion protection
        ├── secret scanning
        └── Dependabot
        │
        ▼
     PR Review
        │
        ▼
repo-policy validate
        │
        ▼
repo-policy plan
        │
        ▼
Approved change
        │
        ▼
repo-policy apply
        │
        ▼
Scheduled audit ─────► Drift detected
                           │
                           └── alert / PR / remediation

That turns a normally hidden collection of GitHub UI settings into a reviewable engineering artifact.

Personas who could use it

The same tool has value for several audiences:

• Individual/open-source maintainer: avoid accidentally weakening protection on an important repository.
• Platform engineer: establish standard repository controls across engineering teams.
• SRE: protect release paths and require reliability-related CI gates.
• DevSecOps/security engineer: enforce secret scanning, security checks, signed commits, and dependency security controls.
• Engineering manager: ensure repository controls do not depend on individual developers remembering configuration standards.
• Compliance/audit team: demonstrate that repository controls are declared, versioned, reviewable, and continuously checked.

There is one important boundary today: it is primarily single-repository governance. Organization-wide inheritance and multi-repository orchestration are currently roadmap items rather than shipped capabilities.