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codebase-mapping skill

by a5c-ai·a5c-ai/babysitter·1.8k stars·MIT

Automatic codebase indexing for invisible context injection. Catalogs project structure, file types, entry points, dependencies, and test layout.

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Is the codebase-mapping skill safe?

Clean: nothing in its files matched our rules. We read 2 files in the folder on 2026-09-28.

No findings.

Install the codebase-mapping skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/a5c-ai/babysitter.git /tmp/babysitter
mkdir -p ~/.claude/skills
cp -r /tmp/babysitter/library/methodologies/claudekit/skills/codebase-mapping ~/.claude/skills/codebase-mapping
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

  • Directory tree with depth-limited enumeration
  • Key file identification (entry points, configs, lock files)

File Type Distribution

  • Language breakdown (TypeScript, JavaScript, Python, etc.)
  • Framework detection (React, Next.js, Express, etc.)

Entry Points

  • Main entry files (index, main, app)
  • CLI entry points
  • API route definitions

Module Dependencies

  • Import graph analysis
  • Package boundary mapping
  • Circular dependency detection

Test Layout

  • Test directory structure
  • Test file patterns and conventions
  • Test framework identification

Context Injection

The codebase map is injected as invisible context during UserPromptSubmit, providing:

  • Project type and framework awareness
  • Convention awareness for code generation
  • Dependency awareness for import suggestions
  • Test pattern awareness for test generation

When to Use

  • Automatically at ClaudeKit session start
  • When project structure changes significantly
  • Before research or specification tasks

Processes Used By

  • claudekit-orchestrator (session initialization)
  • claudekit-research (context for research agents)
  • claudekit-spec-workflow (context for spec creation)

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