My agent.md to improve LLM-assisted code quality
Fabien Sanglard describes his journey using LLMs for coding, from initial failure in mid-2025 to improved results in January 2026, though code quality was poor. He then used agentic IDEs like Antigravity and VS Code's Claude Code plugin, which improved quality but required repetitive instructions. He created an agent.md file to encode his coding style preferences, which the coding harness loads at session start, reducing repetition and improving consistency.
Developers can use agent.md to encode coding preferences, reducing repetitive instructions and improving LLM-generated code quality.


