Demonstration codebase for building the AI Layer (CLAUDE.md hierarchy, hooks, skills, LSP, MCP, plugin) — companion repo for the 'How Claude Code works in large codebases' video.
Helpline is a demonstration project showing how to build an 'AI Layer' - a configuration and tooling harness that makes AI coding assistants productive in large codebases. It includes a realistic B2B helpdesk platform (with ticket management, user accounts, billing, and notifications) alongside complete implementations of hooks, skills, structured search tools, and self-improving documentation. The project serves as both a working application and a teaching tool, with two learning paths: install the portable plugin directly, or study the patterns to build your own AI Layer adapted to your project.
How It Works
You've tried asking an AI to help with your code, but it gets lost in large projects and doesn't know your team's conventions.
This project is a real helpdesk application with all the configuration and tooling that makes an AI assistant productive in a complex codebase.
The project includes a working helpdesk with ticket management, user accounts, billing, and email notifications - everything a small support team needs.
Take the portable pieces - hooks, search tools, and skills - and add them to your own codebase with one command.
Read the documentation and rebuild the AI Layer from scratch, adapted to your own project structure.
The AI now knows your project structure, follows your team's conventions, and can search your code structurally instead of just guessing.
After each session, the AI reflects on what changed and proposes updates to keep the documentation fresh and accurate.
You have an AI partner that understands your codebase, respects your team's patterns, and gets smarter with every session.
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