Adding AI Coding Rules

TL;DR: Arnica automatically adds security-focused AI coding rules to your repository as part of a security policy configured by your security team. These are safe configuration files that help AI assistants write more secure code. Any change to any file can trigger this - it's not something you did wrong. Safe to merge!

Why am I seeing this?

You're seeing this because of a security policy configured by your security team - not something you did wrong!

Here's what's happening:

• Any change to any file can trigger this workflow - whether you're updating CSS, backend logic, documentation, or any other file type

• Your security team has enabled this feature for your repository (and possibly others) to ensure consistent security standards compliance by AI coding assistants and agents.

• This is completely normal and happens to ensure all AI tools have access to the latest security guidelines

• You happened to be the first developer to open a Pull Request after this policy was enabled for your repository

• Even frontend developers changing CSS files or backend developers updating APIs benefit from having AI assistants that understand your organization's security requirements

The bottom line: This is a proactive security measure that benefits everyone, regardless of what type of changes you're making.

Is it safe to merge?

Yes, absolutely! Here's why you can merge with confidence:

✅ Only configuration files - These are just text files with guidelines. No executable code.

✅ Zero impact on your app - Won't affect builds, deployments, or how your code runs.

✅ No impact if you don't use AI tools yet - These files sit quietly until your team adopts AI assistants.

✅ Future-ready - When your team does start using AI tools, they'll automatically follow security best practices.

✅ Actually improves performance - AI assistants work better and faster with clear guidelines.

✅ Makes your life easier - Less time fixing security issues, more time building features.

What you might see: In some cases, AI-generated code may include comments referencing these security rules. These comments show the AI is following your organization's guidelines and can help reduce time spent on security-focused code reviews.

What gets added to my repo?

You'll see some new configuration files that tell AI assistants about your organization's security practices:

• .cursor/rules/ - Security guidelines for Cursor

• .github/instructions/ - Instructions for GitHub Copilot

• GEMINI.md - Guidelines for Google's AI tools

• CLAUDE.md - Instructions for Claude

• AGENTS.md - Rules for various coding agents and automation tools

The AGENTS.md format works with tons of tools: Aider CLI, GitHub Copilot Workspace, GitLab Duo, and many other coding assistants and automation scripts.

Why does this help me?

Short term: Your AI assistant will write more secure code that follows your org's standards from day one.

Long term: Less time spent in code reviews fixing security issues, fewer vulnerabilities making it to production, and AI that "knows" your team's coding patterns.

Real impact: Instead of constantly re-prompting your AI to "make this more secure" or "follow our coding standards," it just does it automatically.

Need help or have questions?

First, check with your internal team:

• Security team members who manage security policies

• DevOps/Platform team responsible for development tooling

Still need help? For technical support or urgent matters, contact [email protected].

FAQ

Q: Why this repository and not others? A: Your security team configured this policy for your repository. They might have enabled it organization-wide or for specific repositories - it depends on your organization's security requirements.

Q: We don't use AI coding assistants - why are we getting these files? A: No worries! These files have zero impact if you're not using AI tools yet. Your security team is future-proofing your repo so that when you do adopt AI assistants (like Cursor, GitHub Copilot, etc.), they'll automatically follow your organization's security standards from day one.

Q: We already have our own AI coding rules - won't this conflict? A: Arnica's rules focus on security and complement your existing setup. Most AI tools handle multiple rule files just fine. If you run into issues, reach out to your security team.