KeyPool auto-tests, rotates, and manages your LLM API keys across 8 providers. Stop losing tokens to dead keys. Add keys → test instantly → auto-rotate exhausted ones → never hit silent 401s again. Supports OpenAI, Anthropic, DeepSeek, Groq, DashScope, Gemini, Mistral, NVIDIA. CLI + Web dashboard. MIT License. Self-hosted. Keys stay on your server.