I had good luck with AGENTS.md and AGENTS.rfc (+ rationales). Ask your agent to "translate AGENTS.md to AGENTS.rfc in early RFC style. Use MUST/MAY but do not

I had good luck with AGENTS.md and AGENTS.rfc (+ rationales). Ask your agent to "translate AGENTS.md to AGENTS.rfc in early RFC style. Use MUST/MAY but do not define them. Add a 'rationale' block after each section". Then ask it to compress the `*.rfc` back down to `*.md` and compare token efficiency before and after. Make sure you go in and supplement/synthesize additional rationale info after the first pass. It's observation was that given just the ruleset (*.md) it could detect contradictions but not justify if the rules were internally consistent, and stripping rationales during every prompt context was more token-efficient.