Newen documentation

Newen is a native desktop app, written in Rust with the limn UI library, for working with coding agents. You pick an agent CLI you already have installed and signed in to (Claude Code, Codex, OpenCode or Hermes) and drive it in local sessions from one window.

For each request you see which files were created, modified, deleted or renamed, which commands ran and what each tool returned. You answer permissions inline, review the changes, open the project’s files, use a terminal and a browser the agent can drive too, and pick sessions back up after a restart.

Newen talks to each CLI on its own protocol. It does not implement the agent: the CLI does.

Start here

InstallDownload Newen for Linux or Windows, or build it.

Your first sessionPick a folder and an agent, and send a message.

Learn how it works

AgentsThe four agents, what each can do, and signing in.

SessionsThe sidebar, states, archive, restarts and notifications.

PermissionsPermission cards, questions, plans and each agent's modes.

Changes and rewindThe record of every request, and how to go back.

Sessions working togetherHow one agent starts, reads and waits for another.

Your dataWhat Newen keeps, where, and what it sends.

Guides and reference

Writing to an agentThe message box: attachments, mentions, steering and the queue.

Files and documentsThe project's files, spreadsheets and Word documents.

Connectors, skills and pluginsMCP servers and the rest, for one agent or all of them.

SettingsEvery page and option of Settings.

Note

Newen is not affiliated with Anthropic, OpenAI or any other agent vendor. It talks to the agent CLIs you have installed and signed in to, and uses no code, fonts, icons or branding of their vendors.