Jul 11, 2026
AGENTS.md vs Tool-Specific Config Files in 2026: What You Still Need
AGENTS.md is now the cross-tool standard read by 28+ AI coding tools. Here's what it covers, what tool-specific files still do better, and how to run both.
PROMPTKIT BLOG
AI Coding Assistant Configuration Guides
Tactical tutorials for writing better instruction files and standardizing behavior across Cursor, Windsurf, GitHub Copilot, Claude Code, Gemini CLI, OpenCode, and Codex.
Apr 6, 2026
The Complete Guide to AI Coding Assistant Configuration
Learn how AI coding instruction files work, how each assistant format differs, and how Promptkit standardizes everything from one source of truth.
Apr 6, 2026
How to Write Cursor Rules: A Complete Guide to .cursorrules and .mdc Files
Learn how to write effective Cursor rules using .cursorrules and .mdc files, with concrete examples for architecture, style, and testing guardrails.
Apr 6, 2026
GitHub Copilot Instructions: How to Set Up .github/copilot-instructions.md
Set up GitHub Copilot instructions correctly with repository-level guidance, practical examples, and a structure that improves consistency across contributors.
Ready to apply these patterns to your own repository?
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