codebase-analyzer

Codebase Analyzer

Analyze project structure and generate CLAUDE.md files interactively.

Guidelines

MANDATORY: All rules below must be followed exactly. Violations produce incorrect CLAUDE.md content.

@../shared/references/guidelines.md

Algorithm

1. Check Existing CLAUDE.md

If CLAUDE.md already exists, ask the user how to handle it:

• Migrate: Convert to auto-managed format (add markers)
• Backup: Create CLAUDE.md.backup and generate fresh
• Merge: Keep manual sections, add auto-managed sections
• Cancel: Abort initialization

2. Scan Directory Structure

Detect frameworks and build systems:

• package.json - Node.js/JavaScript
• pyproject.toml, setup.py - Python
• Cargo.toml - Rust
• go.mod - Go
• Makefile - Make-based builds
• Dockerfile - Container builds

Extract build/test/lint commands from config files.

3. Identify Subtree Candidates

Look for framework boundaries that warrant separate CLAUDE.md files:

• src/ with 10+ source files
• lib/ directory
• packages/* (monorepo packages)
• apps/* (monorepo applications)

4. Detect Code Patterns

Analyze source files for conventions:

• Naming: PascalCase, camelCase, snake_case usage
• Imports: ES6 modules, CommonJS, ordering patterns
• Architecture: Feature-based, layered, MVC patterns
• Style: Indentation, quotes, semicolons

5. Fetch Memory Guidelines (Optional)

If network available, fetch from https://code.claude.com/docs/en/memory:

• Use WebFetch tool
• Extract relevant sections for context
• Reference official guidelines above as primary source

6. Present Findings

Use AskUserQuestion to confirm:

• Detected framework and commands
• Suggested subtree locations
• Detected patterns

7. Generate Memory Files

Read .claude/auto-memory/config.json to determine which files to generate based on memoryFiles:

memoryFiles value	Files to generate
absent or ["CLAUDE.md"]	CLAUDE.md only (full content)
["AGENTS.md"]	AGENTS.md only (full content)
["CLAUDE.md", "AGENTS.md"]	AGENTS.md (full content) + CLAUDE.md (redirect)

Generate full-content files using the EXACT template structure. Follow these steps precisely:

1. Copy template skeleton - Use the appropriate template (CLAUDE or AGENTS) as the base structure
2. Use exact marker format - See Marker Syntax section below
3. Replace placeholders - Substitute {{PLACEHOLDER}} with detected content
4. Include all required sections - Even if content is minimal, include the section
5. Add MANUAL section at the end for user notes
6. Size limits: Root 150-200 lines, Subtrees 50-75 lines

When both CLAUDE.md and AGENTS.md are configured, also generate redirect files:

• At the root: write CLAUDE.md using CLAUDE.redirect.md.template (static pointer, no markers)
• For each subtree that gets an AGENTS.md: write a matching CLAUDE.md redirect alongside it

Marker Syntax

CRITICAL: Use the EXACT marker format below. Do NOT use variations.

<!-- AUTO-MANAGED: section-name -->
## Section Heading

Content goes here

<!-- END AUTO-MANAGED -->

For user-editable content:

<!-- MANUAL -->
## Custom Notes

Add project-specific notes here. This section is never auto-modified.

<!-- END MANUAL -->

Common mistakes to avoid:

• <!-- BEGIN AUTO-MANAGED: name --> - WRONG (no BEGIN prefix)
• <!-- END AUTO-MANAGED: name --> - WRONG (no name in closing tag)
• <!-- AUTO-MANAGED section-name --> - WRONG (missing colon)

Section Definitions

Root CLAUDE.md Sections

Generate these sections in order:

Section Name	Heading	Required	Placeholder	Content
project-description	## Overview	Yes	{{DESCRIPTION}}	Project name, tagline, key features
build-commands	## Build & Development Commands	Yes	{{BUILD_COMMANDS}}	Build, test, lint, run commands
architecture	## Architecture	Yes	{{ARCHITECTURE}}	Directory tree, key files, data flow
conventions	## Code Conventions	Yes	{{CONVENTIONS}}	Naming, imports, formatting rules
patterns	## Detected Patterns	Yes	{{PATTERNS}}	AI-detected recurring code patterns
git-insights	## Git Insights	No	{{GIT_INSIGHTS}}	Key commits, design decisions
best-practices	## Best Practices	No	{{BEST_PRACTICES}}	From official Claude Code docs

Subtree CLAUDE.md Sections

Generate these sections in order:

Section Name	Heading	Required	Placeholder	Content
module-description	## Purpose	Yes	{{DESCRIPTION}}	Module purpose and responsibility
architecture	## Module Architecture	Yes	{{ARCHITECTURE}}	Module structure, key files
conventions	## Module-Specific Conventions	Yes	{{CONVENTIONS}}	Module-specific rules
dependencies	## Key Dependencies	Yes	{{DEPENDENCIES}}	Module dependencies

Templates

Reference the template files for exact structure:

CLAUDE.md Root Template

@templates/CLAUDE.root.md.template

CLAUDE.md Subtree Template

@templates/CLAUDE.subtree.md.template

AGENTS.md Root Template

@templates/AGENTS.root.md.template

AGENTS.md Subtree Template

@templates/AGENTS.subtree.md.template

CLAUDE.md Redirect Template (when both files configured)

@templates/CLAUDE.redirect.md.template

User Interactions

Use AskUserQuestion for:

1. Existing CLAUDE.md handling (migrate/backup/merge/cancel)
2. Subtree location confirmation
3. Final approval before writing files

Output

After generating files, report:

• Files created/modified
• Sections populated
• Any warnings or suggestions