Scan open and closed scenes for missing scripts, broken references, and null materials. Preview every unused asset in your project so you can see what's safe to removeSentinel Lite is a free Unity Editor extension for project auditing and asset cleanup. It scans your scenes and prefabs — including closed scenes, without ever opening them — for the three most critical, build-breaking issues, and previews every unused asset in your project so you can see exactly what's safe to delete.It's a focused, free slice of Sentinel, built to catch the problems most likely to break a build or bloat a project.Online Documentation | Full Sentinel🔍 Core Features🔹 Issues FinderA scene validator and prefab auditor that scans both open and closed scenes (closed scenes are read as YAML, with no scene loading) for the three most critical, build-breaking issue types: missing scripts, broken references, and null materials. Filter by severity or issue type, sort any column, and click any result to ping it, open it, or copy its path.🗑️ Project Cleaner (Preview)A dead-file finder powered by a root-tracing dependency scanner. It flags assets that are truly unreferenced — not just "not in a scene," but unreachable from every build scene, Resources folder, Addressables group, and asset bundle. Lite shows you the complete list grouped by folder, with file sizes, total reclaimable space, and empty folders — a read-only preview so you can see exactly what's safe to remove.Comparison✅ Free — Included in this PackageScene & Prefab Auditing — Scan open and closed scenes for missing scripts, broken references, and null materials.Deep Scanning — Closed scenes are read as YAML without needing to be opened, ensuring a fast, non-disruptive workflow.Issue Navigation — Filter by severity, sort columns, and click to ping, open, or copy asset paths.Project Cleaner (Preview) — Root-tracing dependency scan flags unreferenced assets, showing file sizes and reclaimable space.Out of the Box — Online documentation, editor-only assembly, zero runtime footprint, and full C# source included.🔒 Paid / Full Version OnlyAdvanced Detectors — Shader errors, invalid layers/tags, empty events, unused components, and duplicate names.One-Click Repair — Automated auto-fixes for detected issues with full Unity Undo support. Active Cleanup — Delete unused assets with a reversible "Trash" system and automatic backup ZIPs.Usage Tracking — Full References Finder ("where is this asset used?") and 0–100 Project Health Scores.DevOps & CI/CD — Build validation, regression tracking, JSON/JUnit reports, and Slack/Discord notifications.📧 Support & QuestionsFor any questions, bug reports, or feature requests, reach out at ragendom@gmail.com.We typically respond within 24–48 hours.🧩 Practical NotesZero Runtime Footprint — Editor-only assembly. Nothing is added to your player builds.Compatibility — Compatible with Unity 2021.3 LTS through Unity 6.No Dependencies — No external dependencies required.Core ModulesIssues Finder — Scans open and closed scenes using a fast, YAML-based approach that doesn't require scene loading.Project Cleaner (Preview) — Uses a root-tracing dependency algorithm to find unreferenced assets. (Read-only: find and preview only).Built-in Issue DetectorsMissing Script (Error) — Flags deleted or renamed MonoBehaviour components.Missing Reference (Error) — Identifies serialized fields pointing to missing assets.Missing Material (Error) — Detects null or missing material slots on renderers.Navigation & FilteringSmart Search — Filter by severity and issue type with fully sortable columns.Quick Actions — Click any result to ping the object, open the asset, or copy the file path.Deep Scan — Covers the entire project, including all closed scenes and the currently active hierarchy.Project Cleaner PreviewDependency Tracking — Root-tracing scan starts from every build scene, Resources, StreamingAssets, Editor, Plugins, Addressables, and asset bundles.Visual Reports — Results are grouped by folder with file sizes, total reclaimable space, and empty-folder detection.Lite Limitations — Read-only in this version. Deletion, reversible Trash, and backup ZIP features are exclusive to the full version.Requirements & CompatibilityUnity Version — Unity 2021.3 LTS or newer (including Unity 6).Render Pipelines — Supports all pipelines: Built-in, URP, and HDRP.Zero Footprint — Editor-only scripts ensure zero impact on your player build size.Standalone — No external dependencies or packages required.Shortcut — Open instantly with Ctrl+Shift+Alt+S.Claude (Claude Code) was used extensively throughout the development of this package to assist with writing, refactoring, and debugging C# editor scripts.
