Transparency
How scores work.
HookSignals scores are directional signals based on publicly available data and packaging analysis. They are designed to help creators identify weak signals before publishing — not to predict or guarantee performance.
How scores work
What HookSignals scores — and what it doesn't.
Data sources
- ◆YouTube Data API
- ◆Public video metadata
- ◆Title structure analysis
- ◆Hook pattern analysis
- ◆Packaging analysis
Scores are
- ✓Directional guidance before you publish
Scores indicate which packaging elements are weak before publishing — not after.
Scores are not
- ✗Guaranteed views
- ✗Actual YouTube CTR
- ✗Actual retention data
Actual CTR, retention curves and view counts are only available inside YouTube Studio.
What the analyzer actually does
- ◆Fetches public video metadata via the YouTube Data API — title, views, likes, duration and thumbnail URL.
- ◆Analyzes title structure for clarity, curiosity gap, keyword placement and character length.
- ◆Scores the hook and opening signals across 9 packaging dimensions.
- ◆Returns improvement suggestions — alternative titles, hook rewrites, thumbnail text and a description angle.
What the analyzer does not do
- ✗Does not access your YouTube account or YouTube Studio.
- ✗Does not read private analytics — actual CTR, watch time or audience retention curves.
- ✗Does not guarantee views, clicks or channel growth.
- ✗Does not access private or unlisted video data.
How to use scores effectively
A high score does not guarantee a video will perform well. A low score does not mean a video will fail. Scores indicate which packaging elements — title clarity, hook strength, curiosity gap, keyword placement — are weak relative to known patterns. Use them as a pre-publish checklist, not a performance prediction.