# X Safety Filtering > Use this skill when analyzing why content is not appearing, checking for "shadowban" conditions, or understanding the safety compliance layer. This skill covers the `VisibilityLib` logic that runs *after* candidate sourcing but *before* final ranking to ensure platform health. - Skill: `tomevault-io/x-safety-filtering` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/x-safety-filtering` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/x-safety-filtering/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/x-safety-filtering --- # X Safety & Filtering Expert knowledge of X's VisibilityLib, covering safety labels, shadowban logic, NSFW filtering, and content health suppression mechanisms. ## Context The filtering stage is the "Gatekeeper" of the timeline. Even if a tweet has a high ML score from the Heavy Ranker, `VisibilityLib` can drop it entirely or apply a "Do Not Amplify" label that restricts it to the author's profile. This layer enforces legal compliance, user blocks, mutes, and platform safety rules (e.g., NSFW or Toxicity). ## What it does * **Decodes "Shadowbans":** Explains the specific internal labels (like `SearchBlacklist`) that cause users to perceive they are shadowbanned. * **Enforces User Preferences:** Handles the logic for Mutes, Blocks, and "Show less often" signals. * **Manages Content Health:** Identifies toxic content or misinformation using models like `pToxicity` and `pAbuse` and applies downstream penalties. * **NSFW Handling:** Segments content into "Adult" or "Graphic" categories using `pNSFWMedia` and ensures it respects the viewer's sensitivity settings. ## Guidelines * **SafetyLevel Context:** Rules are evaluated based on the `SafetyLevel` (e.g., Timeline vs. Profile). A tweet might be visible on a Profile but blocked in the Home Timeline. * **The "Do Not Amplify" (DNA) Label:** Disqualifies tweets from the "For You" (Out-of-Network) timeline and Search results without removing them from the profile. * **Visibility vs. Ranking:** 1. **Pre-Scoring:** Hard filters (Drop) remove blocked or legally prohibited content. 2. **Post-Scoring:** Soft filters (Labels) apply safety checks (e.g., author diversity) after the Heavy Ranker has assigned scores. * **Toxicity Thresholds:** If a user enters a "Reply Guy" mode with consistently high `pToxicity` scores, their account enters a state that limits the reach of all their future replies. * **Linear Decay:** Negative reputation signals follow a linear decay model; an account can "heal" its reputation over time by stopping negative behavior. ## Example Trigger Prompts * "/safety-check shadowban or SearchBlacklist status" * "/safety-check toxicity decay for @user" * "/safety-check flagged content vs safe content ratio" * "/safety-check audit applied filters on a thread" * "what are the visibility rules affecting recent posts" * "show suppressed accounts in a community" --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/elemontcapital) — claim your Tome and manage your conversions.