Line0

Two-way GitHub integration is the detail that sets Line0 apart from a plain chat window: the code it writes for your backend can sync with your repositories.

Line0 is an AI code assistant for backend development that works as a pair programmer, generating Express.js and Node.js APIs from plain-language prompts.

You describe what you want, and it writes the endpoints.

Prompt features help you work faster, and separate chats let you keep context for each feature you build instead of mixing everything into one thread.

The generated code is meant to follow good backend practices.

The makers claim it cuts work from weeks to minutes, which is a bold claim you should test on your own project.

Line0 currently focuses on Express.js and Node.js, with other frameworks and languages planned.

The in-browser API client and live database preview are still marked coming soon.

The free plan has daily message limits and uses smaller models.

Paid plans raise the message limits significantly, though they still have caps.