Production-ready security middleware for FastAPI. Use when adding IP filtering, rate limiting, per-route security decorators, route-resolution strict mode, global behavior rules, passive/log-only mode, or Guard Agent SaaS telemetry to a FastAPI app. Covers SecurityMiddleware setup, SecurityConfig tuning, and the…
Home marketplace of fable-mode — the plugin that runs Opus 4.8 under Claude Fable 5's own behavioral doctrine, with enforcement hooks and a measured eval loop.
Make Opus 4.8 behave like Fable 5: doctrine output style, drift-catching hooks, orchestration skills, and an eval loop against golden Fable transcripts.
Adversarial verifier. Use PROACTIVELY before claiming a nontrivial change is done, fixed, or passing — give it the claim plus the relevant diff/paths and it attempts to refute the claim with evidence.
Run the fable-mode eval suite (probes → pairwise judge → report). Costs tokens — runs headless claude many times. Optional arg: a probe id substring to filter.
Use when a task involves 2+ independent units of work (files, modules, questions) or any broad codebase sweep — enforces Fable's delegation-first parallel orchestration.
Use before ending any turn that involved multi-step work — Fable's end-of-turn gate catches promised-but-undone work, buried findings, and unverified claims.
Use when about to write your final reply, a summary, PR description, commit message, or any user-facing conclusion — enforces Fable's outcome-first, prose-first communication contract.