AgentLens Codebase Navigation is a development Claude Skill built by David. Best for: Developers working with unfamiliar or large codebases use this skill to quickly locate code sections, understand module relationships, and identify potential issues before modification..

What it does
Navigate large codebases efficiently using hierarchical documentation structure to find modules, symbols, dependencies, and warnings.
Category
development
Created by
David
Last updated
developmentintermediate

AgentLens Codebase Navigation

Navigate large codebases efficiently using hierarchical documentation structure to find modules, symbols, dependencies, and warnings.

Skill instructions


name: agentlens description: "Navigate and understand codebases using agentlens hierarchical documentation. Use when exploring new projects, finding modules, locating symbols in large files, finding TODOs/warnings, or understanding code structure."

AgentLens - Codebase Navigation

Before Working on Any Codebase

Always start by reading .agentlens/INDEX.md for the project map.

Navigation Hierarchy

| Level | File | Purpose | |-------|------|---------| | L0 | INDEX.md | Project overview, all modules listed | | L1 | modules/{slug}/MODULE.md | Module details, file list | | L1 | modules/{slug}/outline.md | Symbols in large files | | L1 | modules/{slug}/memory.md | TODOs, warnings, business rules | | L1 | modules/{slug}/imports.md | File dependencies | | L2 | files/{slug}.md | Deep docs for complex files |

Navigation Flow

INDEX.md → Find module → MODULE.md → outline.md/memory.md → Source file

When To Read What

| You Need | Read This | |----------|-----------| | Project overview | .agentlens/INDEX.md | | Find a module | INDEX.md, search module name | | Understand a module | modules/{slug}/MODULE.md | | Find function/class in large file | modules/{slug}/outline.md | | Find TODOs, warnings, rules | modules/{slug}/memory.md | | Understand file dependencies | modules/{slug}/imports.md |

Best Practices

  1. Don't read source files directly for large codebases - use outline.md first
  2. Check memory.md before modifying code to see warnings and TODOs
  3. Use outline.md to locate symbols, then read only the needed source sections
  4. Regenerate docs with agentlens command if they seem stale

For detailed navigation patterns, see references/navigation.md For structure explanation, see references/structure.md

Install

/plugin install agentlens-codebase-navigation@dvcrn

Requires Claude Code CLI.

Use cases

Developers working with unfamiliar or large codebases use this skill to quickly locate code sections, understand module relationships, and identify potential issues before modification.

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UpdatedMar 18, 2026