Line0
AI pair programmer for backend development that generates production-ready backend services from natural language descriptions.
At a Glance
Pricing
Daily limits and public projects
Engagement
Available On
About Line0
Line0 is an AI-powered pair programmer specifically designed for backend development. It enables developers to generate production-ready backend services in minutes rather than weeks by describing functionality in natural language. The platform focuses on backend API development and provides a complete development environment with code editing, GitHub integration, and built-in API testing capabilities.
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Natural Language Development allows you to describe the backend functionality you want in plain English, and Line0 handles the code generation automatically.
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Tab-to-Prompt Autocomplete eliminates the need for prompt engineering by letting you press tab to autocomplete as you type, or use the "Enhance" feature to instruct Line0 like a professional.
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In-Browser Code Editor enables direct editing of your full project code within the Line0 interface without switching to external tools.
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Feature-Based Chat Organization lets you split features into separate chats to help Line0 produce better results and keep your project organized.
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2-Way GitHub Sync connects your GitHub account to seamlessly sync and store generated code directly in your repositories, with automatic syncing after each commit.
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Branch Selection allows you to choose a dedicated working branch for each project to maintain a clean git history.
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Built-in API Client provides zero-setup API testing directly in the browser with hot-reloading on every code update, eliminating the need for Postman or curl.
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Live Database Preview auto-provisions a database for each service so you can test with actual data models immediately.
To get started, sign in with your account, describe the backend service you want to build in natural language, and Line0 will generate the code. You can then edit the code directly, test APIs in the built-in client, and sync everything to your GitHub repository.

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Pricing
Free Plan Available
Daily limits and public projects
- Daily message limits
- Create up to 10 public projects
- Sync with GitHub
- In-browser code editing
Plus
Unlimited private projects
- 150 messages / mo
- Unlimited private projects & chats
- Import from GitHub
- Opt out of training
- Email support
Pro
Higher limits
- Everything in Plus
- 2000 messages / mo
- Priority during busy periods
Capabilities
Key Features
- Natural language backend code generation
- Tab-to-prompt autocomplete
- In-browser code editing
- Feature-based chat organization
- 2-way GitHub sync
- Branch selection for projects
- Built-in API client
- Hot-reloading API testing
- Live database preview
- Import existing GitHub projects
- Public and private projects
- Email support