Important Links
- Prompt guidance for GPT-5.6
- Harness Engineering
- Using PLANS.md for multi-hour problem solving
- Using skills to accelerate OSS maintenance
- Run long horizon tasks with Codex
- ARCHITECTURE.md
- Using Linters to Direct Agents
- AGENTS.md outperforms skills in our agent evals
- AI Is Forcing Us To Write Good Code
- Parse, don’t validate
- Agent Skills
- Custom instructions with AGENTS.md