CPA Manager Plus is a full-stack, self-hosted management panel for AI gateway proxies (CPA / CLIProxyAPI). It provides a rich React dashboard to monitor usage across multiple AI providers, manage credentials and API keys, configure provider-specific settings, automate quota cooldowns and account health actions, and inspect credential health via Codex/xAI probes. The Go backend persists all data in SQLite, runs background workers for data rollups, migrations, and collector polling, and exposes a comprehensive REST API. The codebase is well-structured with a clean layered architecture (HTTP handlers, services, repositories), extensive unit and integration tests in both Go and TypeScript, a demo mode with synthetic data, and i18n support. It is actively maintained with a rigorous release process and frequent updates.