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Developer building blocks

CopilotKit

Ready-made pieces for adding AI assistants and chat to web, mobile and team apps.

What it does

CopilotKit gives app builders components for putting an AI agent in front of users: a chat window, screens the AI can create on the fly, and steps where the AI pauses to ask a person to confirm.

The same agent can appear in a website, a mobile app, Slack or Microsoft Teams. Its makers also created AG-UI, an open standard for how agents talk to app screens.

Who it's for

Software developers adding AI assistants to their products.

Can I use it without coding?

Developers only. A programming toolkit for app developers. New to this? Start here.

Can I run it?

Cost
Free, with optional paid extrasThe open-source version is free; the makers also sell a hosted or pro version.
Computer
An ordinary computer is fine
API key
Not needed

Try it

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (MIT): Very permissive: free to use, change and share, including for business.
  • More on staying safe

Where people are talking about it