Agent Adapters

Codex

Codex uses AGENTS.md as the generated shared instruction file. The codex adapter creates no additional agent files because the base scaffold always includes AGENTS.md.

Claude Code

Claude Code reads CLAUDE.md, so the Claude adapter creates a small wrapper that references AGENTS.md and adds Claude-specific notes. It also creates .claude/rules/*.md files for path-oriented guidance.

CLAUDE.md does not duplicate the full shared instructions. AGENTS.md remains the shared source of truth.

Cursor

Cursor support creates .cursor/rules/*.mdc files plus the shared AGENTS.md. Each .mdc file includes frontmatter with metadata such as description, alwaysApply, and globs where appropriate.

Why Checks Still Matter

Instruction files guide agents, but they do not enforce behavior. Generated projects use scaffold-guard check, strict local tooling, and GitHub Actions CI to catch risky patterns such as type suppressions, unresolved templates, missing adapter files, and mismatched configuration.