Prevu: developer tool for Hermes Agent

Open-source CLI and agent skills for giving coding agents preview and staging environments

What Prevu does

Prevu gives a coding agent a real staging environment: SSH access, a way to run a project, and a preview URL you can open from any device. The repository holds the public pieces. These are the @prevu/cli command-line tool, the @prevu/skills package of plain SKILL.md instructions, and a contract for the staging Ubuntu image that defines the user, the /workspace folder, metadata files, SSH, Docker and common build tools.

The CLI covers authentication, environment lifecycle, SSH, services and port exposure. Examples include prevu env create, prevu env exec, prevu env service start and prevu env expose with a port. The skills teach agents flows such as mirroring local work to an environment for phone review and sharing a work-in-progress branch as a preview URL. The repository description names Claude Code, Codex, Cursor, OpenHands, OpenClaw and Hermes Agent. The hosted control plane, accounts and billing are not part of this repository.

Key features

prevu CLI for auth, environment lifecycle, SSH, services and port exposure
SKILL.md agent skills that teach coding agents the Prevu commands
Preview URLs for sharing a running project for human review
Public staging-image contract covering user, workspace, SSH and Docker
Skill install through npx skills for Claude Code and other agents
Guidance for recovering from auth, SSH and port-exposure problems

When to use it

Letting an agent run a dev server and hand you a URL to review from your phone
Sharing a work-in-progress branch as a public preview
Giving a coding agent a disposable SSH environment instead of your laptop

Who it is for: Developers who run coding agents and want them to produce reviewable preview environments.

How it fits with Hermes Agent

A general coding-agent tool whose repository description lists Hermes Agent, along with Claude Code, Codex, Cursor, OpenHands and OpenClaw, as agents that can use Prevu. The README documents Claude Code skill installation explicitly.

How to install Prevu

These commands are copied from the project's README. Check the repository for the latest steps before you run them.

npm install -g @prevu/cli
prevu auth login
prevu env list

Requirements: Node.js 20 or newer and a Prevu personal access token

Note: The CLI works with the managed Prevu service, whose control plane, accounts and billing are not included in this repository.

FAQ

What is Prevu?

Prevu is an open-source CLI and a set of agent skills for giving coding agents staging environments with SSH access and preview URLs. A hosted Prevu service provides the environments.

Does Prevu work with Hermes Agent?

The repository description lists Hermes Agent among the supported coding agents. The README shows skill installation for Claude Code, so check the skills package for the exact steps for Hermes.

How do I install Prevu?

Run npm install -g @prevu/cli, then prevu auth login and paste a personal access token. Node.js 20 or newer is required.