#claude.md

#agents.md

#ai coding agents

#claude code

#codex

#cursor

#context engineering

CLAUDE.md vs AGENTS.md: The Cross-Tool Standard for AI Coding Instructions (2026)

#context engineering

#ai coding agents

#claude code

#prompt engineering

#llm

#tokens

#context rot

#agents.md

Context Engineering for AI Coding Agents: 9 Techniques for 2026