# Codebase Mapping (agent skill)

> Codebase Mapping is an agent skill (a SKILL.md file) from a5c-ai/babysitter. Automatic codebase indexing for invisible context injection. It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 1,833 GitHub stars across a repository of 2 listed skills.

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

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/a5c-ai/babysitter |
| Skill path | library/methodologies/claudekit/skills/codebase-mapping/SKILL.md |
| Skill name | codebase-mapping |
| GitHub stars | 1,833 |
| Installs on skills.sh | not listed |
| License | MIT |
| Skills in repo | 2 |
| Plugin marketplace | babysitter |
| Official | no |
| Works with | Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode |
| Category | Coding |
| Last commit | Aug 31, 2026 |

## Add this skill

### Claude Code

```sh
/plugin marketplace add a5c-ai/babysitter
/plugin install babysitter@babysitter
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/a5c-ai/babysitter.git
cp -r babysitter/library/methodologies/claudekit/skills/codebase-mapping .agents/skills/codebase-mapping   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/a5c-ai/babysitter.git
cp -r babysitter/library/methodologies/claudekit/skills/codebase-mapping .cursor/skills/codebase-mapping   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

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Canonical page: https://appsgit.com/skills/a5c-ai-codebase-mapping
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