Mmcp.market

codebase-research skill

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

Systematic codebase exploration following the Iron Law - understand the problem before exploring code. Four phases with file-finder and web-researcher agents.

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Is the codebase-research 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-research 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/rpikit/skills/codebase-research ~/.claude/skills/codebase-research
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

  • Investigating how an existing feature works before modifying it
  • Understanding dependencies and data flows before planning
  • Gathering context for a known goal

Process

  1. Understand the request - Ask clarifying questions one at a time (purpose, specifics, scope, constraints, context). Do NOT read any files until confirmed.
  2. Explore the codebase - Use file-finder agent, read in order, trace data flows, identify constraints.
  3. Document findings - Write structured research document to docs/plans/YYYY-MM-DD--research.md.
  4. Transition - Ask: plan, continue research, or conclude.

Key Rules

  • Quotations from source material capped at 125 characters maximum
  • Only proceed to exploration after human confirms understanding
  • Use file-finder agent for initial file discovery
  • Use web-researcher agent for external context needs

Agents Used

  • agents/file-finder/ - Locates relevant files with suggested reading order
  • agents/web-researcher/ - Gathers external context when needed

Tool Use

Invoke via babysitter process: methodologies/rpikit/rpikit-research

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