The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Fable 5-grade work discipline for any Claude model — a Claude Code skill + guard hooks (plan gate, model ceiling, per-task enforcement) that make Opus 4.8 or any non-frontier model plan, self-verify, and route sub-agents like Fable 5, without Fable 5.