Hermes Agent is an open-source, self-improving AI agent from Nous Research featuring a built-in learning loop that creates and refines skills from experience, maintains persistent memory across sessions, and builds a user model over time. It supports 40+ tools, multi-platform messaging (Telegram, Discord, Slack, WhatsApp, Signal), cron scheduling, parallel subagents, and MCP integration. It runs on any infrastructure from a $5 VPS to serverless, supports 200+ LLM providers via OpenRouter with no lock-in, and includes a full TUI. Migration from OpenClaw is supported.