Hermes Agent
Nous Research
Open-source multi-channel agent: one gateway process serves 20+ messaging platforms, with built-in self-improving learning
The framework is open source and free; your cost is the model API you connect. Nous Research also sells a Portal subscription covering many models plus a Tool Gateway (web search, image generation, TTS, cloud browser), which removes per-tool key juggling.
- One agent reachable from WeChat, WeCom, Feishu/Lark, WhatsApp, Telegram, Discord, Slack, email and more
- A long-running background service (systemd / launchd / Task Scheduler) rather than an open terminal
- Per-channel model and system-prompt overrides — one gateway, different persona per channel