Onboarding (Grade B) logo

Onboarding (Grade B)Security-tested development skill for Claude AI. Grade B. Generate or regenerate ONBOARDING.md to help new contributors understand a codebase. Use when the user asks to 'create onboarding docs', 'gene

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Daniel NikulshynReviewed by Daniel Nikulshyn·Updated July 2026

Overview

Onboarding is a security-tested development skill for Claude AI, graded B. It generates or regenerates an ONBOARDING.md file to help new contributors understand a codebase. The tool is used when a user asks to create onboarding documentation, generate ONBOARDING.md, or prepare a repository for a new contributor. It crawls a repository, generates the ONBOARDING.md document at the repository root, and provides a mental model of the codebase reconstructed from the code itself. The tool always regenerates the document from scratch and overwrites any existing ONBOARDING.md file. It focuses on clear prose for humans, using ASCII diagrams, markdown tables, and proper formatting for file paths and code references. The generated document includes six sections, each answering a question a new contributor would ask in their first hour, without speculative sections or secret values.

Key features

  • Generates ONBOARDING.md at the repository root
  • Crawls repository and gathers inventory of project structure
  • Reads key files guided by inventory
  • Creates ASCII diagrams and markdown tables
  • Avoids including secret values

Pricing

Model
Free
Category
Skills
Rating
No reviews yet

Use cases

New Contributor Onboarding

Generate ONBOARDING.md to help new contributors understand a codebase.

Codebase Documentation

Create or regenerate onboarding documentation for a repository lacking it.

Team Member Onboarding

Provide a written artifact to onboard a new team member.

Pros & Cons

Pros

  • Automates the creation of onboarding documentation
  • Reconstructs a mental model of the codebase from the code itself
  • Provides clear prose and visualizations for new contributors
  • Handles fast-moving codebases and AI-assisted development

Cons

  • May not accurately capture design rationale or fragility
  • Relies on the quality and completeness of the repository's code and structure

Reviews

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Q&A

What kind of visual aids does Onboarding add to the generated document?

Onboarding creates ASCII diagrams and markdown tables to illustrate the project structure, file paths, and code relationships, making the mental model easier for new contributors to grasp.

Asked by Diego Fernández · Oct 17, 2025

How does Onboarding handle sensitive information in the repo?

The tool is designed to avoid including secret values; it skips over any credentials or secrets it encounters while crawling the repository.

Asked by Jarrah Whitlock · Sep 20, 2025

Will Onboarding overwrite an existing ONBOARDING.md file?

Yes, Onboarding always regenerates the document from scratch and overwrites any existing ONBOARDING.md at the repository root.

Asked by Sami Virtanen · Aug 27, 2025

Ask a question

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