Hermes One

Open-source desktop AI agent with a self-improving learning loop and multi-platform messaging connectors.

Free· Free, MIT-licensed; you pay your own model inference costsAgentsMulti-model (BYO via OpenRouter/OpenAI/Anthropic/Gemini/xAI/Ollama)

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Best for

Pick Hermes One if you want a hackable, self-hosted agent that lives in your messaging apps and can teach itself new skills as it works.

Skip if

Skip it if you want a polished hosted product with SSO, a billing dashboard, and a vendor-supported SLA out of the box.

Hermes One is an MIT-licensed desktop AI agent framework built around a self-improvement loop: the agent writes and refines its own skills during use rather than relying on a fixed toolset. Out of the box it ships with 14 toolsets covering web search, code execution, image generation, file ops, and scheduled automations driven by natural-language cron-like instructions, plus a memory layer with full-text search and LLM-mediated cross-session recall.

It's aimed at developers, researchers, and power users who want an autonomous agent they can pipe into the channels they already live in - Telegram, Discord, Slack, WhatsApp, Signal, or a local CLI - rather than a hosted chat UI. Model routing is BYO: OpenRouter (300+ models), OpenAI, Anthropic, Gemini, xAI, NVIDIA NIM, Hugging Face, Ollama, and LM Studio are all supported, so you pay only the underlying inference bill. The repo has ~12.9k GitHub stars, which suggests an active community but a moving target.

The parallel-subagent spawning model and Nous Portal integration position it more as a research-grade agent harness than a polished consumer product. Expect to wire up your own API keys, host it yourself, and handle the operational side of long-running agents.

Editor's take

One of the more interesting open-source agent projects because it commits to the learning-loop idea rather than just chaining tools. The multi-platform connector list is unusually broad, but this is firmly in builder territory - treat it as a framework you'll operate, not a turnkey assistant.

— The AI Tool Bible editorial team