Understand how code works, how a change was done before, and which repos are coupled — to answer a question, plan a code change, debug a regression, or scope a fix, using Qodo managed tools through MCP or the CLI. Use when a task needs to understand a codebase, its history, or how its repos relate — especially for a repo you don't have checked out or work spanning repos — "how does X work", "where is X defined", "who changed X", "explain this service", "plan the change for X", "what would changing X affect", "which repos depend on X", "why did X regress / when did it break", "has this been fixed before", "how did we solve X".