Getting started
What Line CLI is, who it is for and your first session.
- Can I use Line CLI in Arabic?Yes. Write to Line in Arabic: right-to-left text is shaped, ordered and right-aligned in answers and in the input box. /rtl changes the layout.How-to
- Can I use Line CLI on a Chromebook?Yes, if your Chromebook has the Linux development environment turned on. Install Line inside it with the Linux installer.FAQ
- Can I use the Model API instead of Line CLI?The Model API gives your code direct access to SuperCosmos; Line CLI is a finished agent with tools, approvals and sessions built on the same model.FAQ
- Can kids or students use Line CLI?Students aged 13 and up can use Line CLI. Younger children can't have an account; teens may need a parent or guardian's consent.FAQ
- Can Line CLI break my computer?Line asks before changing files or running commands by default, keeps secrets protected and can undo its file edits. Read approvals carefully.FAQ
- Can Line CLI build a whole app or website for me?Yes, Line can create a project from scratch, writing many files and running commands. Big builds work best with a plan and a clear check.FAQ
- Can Line CLI handle a very large codebase or monorepo?Yes. Line uses a ranked repo map, search tools, a 1M-token context, auto-compaction and parallel sub-agents to work in large repositories.FAQ
- Does Line CLI work offline?No. Line CLI runs on your computer, but the SuperCosmos model runs on Clatter Labs infrastructure, so you need an internet connection.FAQ
- How do I start my first Line CLI session?Install Line CLI, sign in once with line login, then run line inside your project folder to start chatting with the agent.How-to
- How do I write good requests for Line CLI?Tips for asking Line CLI for work: say the goal, name the files, give the check that proves it's done, and use plan mode for big jobs.How-to
- How is Line CLI different from code autocomplete in my editor?Autocomplete suggests the next lines as you type. Line is an agent: it takes a whole task, works across files, runs commands and checks results.Explainer
- Is it called Line, Line CLI or Clatter Line?The product is called Line CLI and the command you type is line. It is made by Clatter Labs. "Clatter Line" is not its name.FAQ
- Is Line CLI free to use?Yes. Line CLI is covered by every Clatter Labs plan, including the Free plan, which has a monthly usage allowance.FAQ
- Is Line CLI open source?No. Line CLI is distributed as a binary from install.clatterlabs.xyz. There's no public source repository to build from.FAQ
- Should I use Line CLI or the Cosmos Agent API?Use Line CLI to work interactively on code on your own machine; use the Agent API to run Cosmos Agent from your own software over HTTPS.FAQ
- What am I looking at in the Line CLI screen?A tour of the Line CLI terminal interface: the conversation, the input box, approvals, the Agents panel, the to-do panel and the status bar.Reference
- What can't Line CLI do?Line can't see images, work offline, host or deploy your app for you, sandbox commands on Windows yet, or use models other than SuperCosmos.FAQ
- What do I need before installing Line CLI?The requirements for Line CLI: a supported OS and CPU, a terminal, an internet connection and a free Clatter Labs account.Reference
- What does Line CLI do, in simple words?A plain-language explanation of Line CLI for beginners: a helper in your terminal that can read and change code when you say yes.Explainer
- What is a coding agent?A coding agent is an AI that can take actions on code: read files, make edits and run commands in steps until a task is done, not just chat.Explainer
- What is a prompt?A prompt is the message you type to tell an AI what you want. In Line CLI, it's the request you write in the input box.Explainer
- What is a terminal, and how do I open one?A terminal is a text window where you type commands. How to open one on Windows, macOS and Linux so you can install and run Line CLI.Explainer
- What is Line CLI?Line CLI is Clatter Labs' coding agent for your terminal. It reads and edits your project and runs commands with your approval.Explainer
- What is SuperCosmos, the model behind Line CLI?SuperCosmos 1.1 by Clatter Labs is the model Line CLI uses: 550B parameters (55B active), a 1M-token context and three efforts.Explainer
- What's the difference between Line CLI and Cosmos on Telegram?Line CLI works on code in your terminal with your local files; Cosmos on Telegram is a chat assistant on your phone or desktop Telegram app.FAQ
- Where can I learn more about Line CLI?Links to the Line CLI docs, commands reference, skills and plugins guides, changelog, status page and support.Reference
- Which programming languages does Line CLI work with?Line CLI isn't tied to one language. It reads and edits any text files and runs your project's own build, test and lint commands.FAQ
- Who is Line CLI for?Line CLI is for anyone who writes code in a terminal: hobbyists, students, professional developers and teams, on Windows, macOS and Linux.FAQ
Still need help?
Tried the steps above and still stuck? Email us. We usually reply within the first hour, and always within 24 hours. A full support team is with you.
Infrastructure questions, or permanent deletion of your data
infrastructure@clatterlabs.xyzFor deleting your whole account or the data of one service.