Overview

The Claude Code Anti-Regression Setup provides a robust solution designed to prevent Claude Code from breaking ongoing projects. It offers ready-to-use templates, subagents, hooks, and anti-regression configurations that streamline project management and safeguard against regressions.

The Challenge

As projects evolve, users of Claude Code may encounter issues related to context window exhaustion, leading to what is termed "context drift". This phenomenon mainly arises when the context window nears full capacity, causing Claude to forget previous decisions made during sessions—ultimately affecting code integrity and introducing regressions. Context drift is a significant contributor to AI-generated inconsistencies, highlighting the need for proactive measures.

The Solution

This repository introduces a structured anti-regression setup through the following components:

1. CLAUDE.md – Functions as a persistent set of project rules that endure through context compaction, ensuring vital guidelines are maintained throughout every session.
2. Subagents – Designed as isolated AI specialists (such as planners, testers, and reviewers) equipped with individual context windows to minimize interaction and maintain focus on tasks without interference.
3. Hooks – Automated mechanisms that enforce testing protocols, preventing the integration of broken code through commit-blocking practices.
4. Rules – Modular coding standards that are scoped to relevant files, optimizing context management by loading only when applicable.

Repository Structure

The repository contains essential files and configurations:

├── CLAUDE.md.template              # Template for project-specific configurations
├── .claude/
│   ├── settings.json                # Configuration settings for hooks and reminders
│   ├── agents/
│   │   ├── planner.md               # Research and planning agent
│   │   ├── tester.md                # Runs regression tests and checks code stability
│   │   └── code-reviewer.md         # Assesses code for quality and security
│   └── rules/
│       ├── python-backend.md        # Python-specific coding rules
│       └── frontend.md              # Frontend-specific coding rules
├── plans/
│   └── .gitkeep                     # Directory for saving planning documents
└── docs/
    ├── WORKFLOW.md                  # Guide for daily anti-regression workflow
    └── MCP-SETUP.md                 # Instructions for setting up the MCP server

Quick Start Guide

With an estimated setup time of 15 minutes, users can initiate the protection against regressions by cloning the repository and configuring it for their projects:

# Clone the repository and set up files
git clone https://github.com/CreatmanCEO/claude-code-antiregression-setup.git
cp -r claude-code-antiregression-setup/.claude /path/to/your/project/
cp claude-code-antiregression-setup/CLAUDE.md.template /path/to/your/project/CLAUDE.md
mkdir -p /path/to/your/project/plans

Modify CLAUDE.md to tailor it to the project's specifications and start using Claude Code.

Essential Features

• CLAUDE.md is critical, being read at the beginning of every session. It should contain all essential rules to mitigate the risks posed by context drift.
• Subagents are specialized entities that handle specific tasks while keeping context isolated to avoid bloated working memory, ensuring efficient processing and minimized risk of error.
• Automated Hooks act as safety nets, ensuring that commits do not proceed unless all tests successfully pass, thereby upholding code integrity.

Recommended Workflow

The recommended workflow emphasizes planning, testing, and stringent monitoring of code context. Leveraging the anti-regression features effectively leads to enhanced project stability and reliability. For comprehensive guidelines, refer to WORKFLOW.md.

For further customization and optimization of the setup, contributions are welcome, particularly in developing language-specific rules and additional hooks.

Resources for Developers

• A curated list of skills, hooks, and agents can be referred to in awesome-claude-code.
• Access production-ready workflow plugins from claude-code-workflows.
• Familiarize with official best practices in the Claude Code Docs.

This repository aims to empower developers with a structured approach to safeguard their coding projects against regressions and improve overall code quality.