Explain your codebase using Derp (Rust codebase)

Learn how to use Derp’s agents to explore and understand large, unfamiliar codebases — using semantic and symbol-level search.

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Overview

This walkthrough shows:

• How Derp explains unknown sections of code
• How it combines semantic and keyword searches
• How to use these insights to modify UI components

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1. Prompt

   Please explain how the agent popup code is structured,
   where it lives in the codebase,
   and how it is rendered and called.
   I want to understand the full data flow and structure
   so I can add a new agent button to it.

2. How Derp’s agent searches

   Derp begins by using semantic (vectorized) search to locate relevant files.
   Once it finds probable matches (e.g., agent_management_popup.rs), it switches to symbolic search (grep and direct code reads).

   Derp intelligently reads large files (splitting them into smaller chunks) to extract relevant definitions and render logic.

3. Generated explanation

   Derp returns a full breakdown:

   • File paths where the popup is defined
   • How it’s rendered within the workspace
   • Which actions and UI components trigger it
   • A step-by-step view of data flow through the popup component