What can limit reach

Some posts are covered or removed after scoring.

A post can score well and still be limited for a specific viewer. Explore how public labels, settings, account state, and recommendation context can allow it, cover it with a warning, or drop it.

Open Under the Hood

August 13, 2026 · a389166 Independent educational project Based on open source

Try a visibility scenario

Change who is viewing and what labels are present.

View source on GitHub

Rust/WASM evaluating54 ordered rules · 61 scenario inputs

ALLOWNo published rule matched a complete supplied scenario.

INTERSTITIALA warning treatment matched and no later DROP matched.

DROPA published drop rule matched and short-circuited evaluation.

INDETERMINATEAt least one required scenario fact is unknown.

Same supplied scenario

Base home …

→

Recommendations …

Evaluation trace0 rules evaluated

0 unknown inputs

Three action families

A visibility verdict is not another score.

The outcome answers what may be shown and how. It does not add or subtract RankingScorer points.

ALLOW

No deciding rule removes or covers the candidate for this viewer and surface.

INTERSTITIAL

The candidate can remain in the feed behind a warning, cover, or other treatment.

DROP

The candidate is removed from this context, with possible effects on thread, quote, or repost presentation.

Labeling path

Many systems contribute facts. Rules decide the treatment.

Models and enforcement services generate signals that are aggregated into stored labels. Visibility rules then interpret those labels for a product and viewer context.

Open visibility package

Grox