Docs
Reference
Get Intelligence free

Get Started

Introduction Quickstart Coding Agents

Concepts

Architecture Generative UI OSS vs Enterprise

Agentic Protocols

Build Chat UIs

CSS Customization Slots (Subcomponents)Fully Headless UI Reasoning Messages

Multimodal Attachments Voice Reasoning

Build Generative UI

Components as Tools Tool Call Rendering State Rendering

Add Agent Powers

Frontend Tools Shared State

Human-in-the-Loop

Sub-Agents Agent Config Programmatic Control

Runtime

Copilot Runtime Use any model router Connect AG-UI agents Deploy to any runtime Authentication

Observe & Operate

Inspector VS Code Extension

Enterprise

How the Enterprise Intelligence Platform Works How Threads & Persistence Work Observability Self-Hosting Intelligence Threads

Deploy

Other

Anonymous Telemetry

Docs Custom Look and FeelCSS Customization

CSS Customization

Theme CopilotKit components via CSS variables and class overrides.

Loading built-in-agent view…

On this page

What is this?Scoping the theme CSS Variables (Easiest)Reference Custom CSS Reference Custom Fonts Custom Icons Custom Labels

8325081