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Cline is an open-source AI coding agent that runs in your editor. It gives you direct, transparent access to frontier AI with no limits, no surprises, and no model ecosystem lock-in. See every decision. Choose any model. Control your costs.
New to coding agents? Watch What is a Coding Agent? to see how Cline works in action.

Get Started

1

Install Cline

Add Cline to VS Code, Cursor, or JetBrains from the extension marketplace; or download Cline CLI to work in the terminal.Install Guide →
2

Pick Your Model

Connect your API key from Anthropic, OpenRouter, or any supported provider.Model Setup →
3

Start Building

Open Cline from the sidebar and describe what you want to build.Your First Project →

What Cline Can Do

Cline operates directly in your codebase with your permission:
  • Read and write files - Navigate your codebase, create new files, and make targeted edits. You approve every change before it happens.
  • Run terminal commands - Execute shell commands, run tests, install packages, and debug errors in real-time.
  • Use a browser - Launch a browser to test web apps, capture screenshots, and interact with pages.
  • Connect external tools - Extend capabilities with MCP servers for databases, APIs, and documentation.
  • Run from the command line - Use the Cline CLI for headless automation, CI/CD pipelines, and shell workflows.

Core Workflows

These are the patterns you’ll use daily with Cline:
WorkflowWhat It Does
Plan & ActThink first, then build. Plan mode explores your codebase without making changes. Act mode implements the solution.
Task ManagementStart tasks, resume previous work, and manage long-running sessions.
Working with FilesUse @ mentions to reference files, folders, URLs, and git commits in your prompts.
CommandsKeyboard shortcuts and slash commands.
CheckpointsAutomatic snapshots of your project. Restore to any previous state instantly.

Why Cline

  • Transparent by default - Watch every file read, every decision considered, every token used. No black box.
  • Any model, any provider - Use Claude, GPT-4, Gemini, DeepSeek, or local models. Switch instantly as new models launch.
  • Zero trust architecture - Your code never touches our servers. Cline runs entirely client-side with your API keys.
  • Open source - Every line of code on GitHub. 50k+ stars from developers who use it daily.