Herm Reviews — Discover what people think of this product.

Herm is a terminal-native AI coding agent that runs every operation inside isolated Docker containers, keeping your host machine clean and safe. Instead of constantly asking for permissions, Herm gains full control within its own sandboxed environment, so it can install dependencies, edit files, and run builds without risking your system.

Built for developers who live in the command line, Herm supports multiple model providers, including Anthropic, OpenAI, Gemini, and Grok, with the ability to switch models on the fly. It dynamically extends its own containers by generating Dockerfiles, creating self-building dev environments that are scoped per Git repository and persist across sessions.

Key capabilities include:

• Terminal-first AI coding agent fully containerized by default
• Autonomous environment setup with on-demand Dockerfile generation
• Multi-provider LLM support with transparent, editable system prompts
• Per-project images that survive container restarts for consistent workflows

Herm is 100% open-source under the MIT license, with its prompts, skills, and project structure fully visible in the repository. That transparency lets you audit, customize, and extend the agent to match your development workflow while maintaining strong isolation between your projects and your host OS.