Flow Kit is an AI video production pipeline orchestrator that manages the end-to-end workflow of creating cinematic videos via Google Flow. It consists of a FastAPI backend (Python) with SQLite persistence, a React dashboard (TypeScript, shadcn/ui) for monitoring and control, a Chrome MV3 extension that bridges the local agent to flow.google.com for batchexecute RPCs, and a worker queue for asynchronous processing. The system supports project creation, character/entity management, scene image/video generation (Veo 3, Omni Flash), AI-powered video review with contact sheets and dimension scoring, TTS narration via OmniVoice, music generation via Suno API, post-processing (concat, branding, SFX), and YouTube upload with channel rules and SEO metadata. The architecture is modular with a provider abstraction layer (Flow, assistant, muse2api), an event bus for real-time updates, and a skill-based workflow system (40+ markdown recipes) that serves as the single source of truth for AI agents (Claude Code, Codex, agy). The codebase is actively maintained with recent migrations (September 2026 Flow API migration) and a comprehensive test suite, though it carries technical debt from multiple fallback layers, hardcoded payload shapes, and tight coupling to Google Flow's internal API.