x-algo-engagement

name	x-algo-engagement
description	Reference for X algorithm engagement types and signals. Use when analyzing engagement metrics, action predictions, or understanding what signals the algorithm tracks.

X Algorithm Engagement Signals

The X recommendation algorithm tracks 18 engagement action types plus 1 continuous metric. These are predicted by the Phoenix ML model and used to calculate weighted scores.

PhoenixScores Struct

Defined in home-mixer/candidate_pipeline/candidate.rs:

pub struct PhoenixScores {
    // Positive engagement signals
    pub favorite_score: Option<f64>,
    pub reply_score: Option<f64>,
    pub retweet_score: Option<f64>,
    pub quote_score: Option<f64>,
    pub share_score: Option<f64>,
    pub share_via_dm_score: Option<f64>,
    pub share_via_copy_link_score: Option<f64>,
    pub follow_author_score: Option<f64>,

    
     photo_expand_score: <>,
     click_score: <>,
     profile_click_score: <>,
     vqv_score: <>,              
     dwell_score: <>,
     quoted_click_score: <>,

    
     not_interested_score: <>,
     block_author_score: <>,
     mute_author_score: <>,
     report_score: <>,

    
     dwell_time: <>,
}