Level 4: Context Engineer — Design Context with AGENTS.md
About 5 minutes
Target audience: Readers who want repository rules to apply consistently across Codex threads
Prerequisites: Read Level 3
Level 4 uses instruction files such as AGENTS.md to provide persistent working context. This reduces the need to repeat repository rules in every prompt.
What to Include
Section titled “What to Include”- Project purpose and technology stack
- Specifications and files to read before implementation
- Editable and protected areas
- Tests, linting, and type-check commands
- Actions requiring approval and prohibited operations
Keep the root AGENTS.md concise and route detailed policies to domain-specific files.
Completion Standard
Section titled “Completion Standard”New threads receive the same working agreement and can discover established patterns and verification procedures.
Next Level
Section titled “Next Level”To expand from local work into issues, branches, PRs, and reviews, continue to Level 5: GitHub Collaborator — Work Through Issues and PRs.
Quiz