Ruler: Centralized AI Coding Instructions Management

Ruler is a tool designed to centralize and manage instructions for various AI coding assistants, simplifying the configuration process across multiple tools.

Key features:

• Centralised Rule Management - Store all AI instructions in a dedicated .ruler/ directory using Markdown files.
• Nested Rule Loading - Support complex project structures with multiple .ruler/ directories for context-specific instructions.
• Automatic Distribution - Ruler applies these rules to configuration files of supported AI agents.
• Targeted Agent Configuration - Fine-tune which agents are affected and their specific output paths via ruler.toml.
• MCP Server Propagation - Manage and distribute Model Context Protocol (MCP) server settings.
• .gitignore Automation - Keeps generated agent config files out of version control automatically.
• Simple CLI - Easy-to-use commands for initializing and applying configurations.

Ruler is particularly useful for teams managing multiple AI tools, as it reduces onboarding friction and maintains consistency across various coding agents.