Security Baseline Implemented Controls Request rate limiting middleware (per-IP in-memory baseline). Prompt injection filter for known attack patterns. Request body size limits to reduce abuse. CORS allow-list via settings. Security headers (X-Frame-Options, X-Content-Type-Options, Referrer-Policy). Pydantic request validation on all chat endpoints. Recommended Next Controls Replace in-memory limiter with Redis distributed limiter. Add JWT-based auth for privileged/admin endpoints. Add WAF rules and IP intelligence for API edge. Add data encryption at rest for persisted session logs. Add formal prompt security regression test suite.