index-repo

Index repository content into a structured PROJECT_INDEX.md file.

Updated Dec 22, 2025
One-click install
npx skills add https://github.com/senior-sigan/llm-skills --skill index-repo-senior-sigan
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: index-repo
Source: https://github.com/senior-sigan/llm-skills/tree/main/skills/index-repo
Command: npx skills add https://github.com/senior-sigan/llm-skills --skill index-repo-senior-sigan

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Repository indexing reduces the token cost of exploring large codebases by generating a centralized PROJECT_INDEX.md that captures structure, metadata, and key entry points.

Core Features & Use Cases

  • Phase-based analysis: scans code, docs, configs, tests, and tooling to collect structured metadata.
  • Automated index generation: builds PROJECT_INDEX.md with sections like Project Structure, Entry Points, Core Modules, Configuration, and Documentation.
  • Use Case: teams can quickly onboard new contributors by providing a searchable, human-friendly index of the repository.

Quick Start

Run the index-repo skill in your repository to generate PROJECT_INDEX.md and initialize the project index.

Frequently Asked Questions about index-repo

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I reduce token usage when exploring a large codebase?

Repository indexing reduces token usage by generating a centralized PROJECT_INDEX.md that summarizes code structure and metadata, enabling fast onboarding and quick discovery without scanning every file.

What is the best way to generate a project index for developer onboarding?

Generating a project index for onboarding is best done by running an automated phase-based analysis that scans code, docs, configs, and tests to render a structured PROJECT_INDEX.md with validation.

How does automated repository indexing work for code structure analysis?

Automated repository indexing works through a multi-phase workflow that analyzes code, extracts metadata, and renders a structured index with validation to capture entry points, core modules, and configuration.

Can I index repository documentation and configurations along with source code?

Yes, repository indexing analyzes code, docs, configurations, tests, and tooling to collect structured metadata, ensuring the generated index captures all relevant project content beyond just source files.

Do I need any dependencies to generate a PROJECT_INDEX.md for my repository?

No dependencies are required to generate a PROJECT_INDEX.md. You can run the index-repo skill directly in your repository to analyze content and initialize the project index with no external dependencies.

What sections are included in an automated repository index file?

An automated repository index file includes sections like Project Structure, Entry Points, Core Modules, Configuration, and Documentation, providing a searchable, human-friendly overview of the repository.