OpenClaw Canvas

Open-source component (real-time visual workspace) O OpenClaw Core

Basic Information

Product Description

OpenClaw Canvas is the visual workspace of OpenClaw, a real-time, interactive surface where AI assistants can render HTML, CSS, JavaScript, charts, dashboards, and any visual content. When users request OpenClaw to create visual content, it generates HTML/CSS/JS code and renders it in the Canvas window, which updates in real-time as the AI iterates on the design.

Canvas runs as an independent server process, defaulting to port 18793, providing isolation and distinct security boundaries (since Canvas offers proxy-writable content). The technical architecture is as follows: the proxy calls the canvas update method → the Canvas server receives the HTML and parses A2UI attributes → the server pushes updates via WebSocket to connected browser clients → the client renders the HTML into an interactive interface.

Core capabilities of Canvas include: real-time reload (for iterative front-end development), remote JavaScript execution (for dynamic debugging and control), and automatic screenshot capture (for reporting, QA, or archiving). It supports multi-platform rendering: macOS uses native WebKit views, iOS uses Swift UI component encapsulation, Android uses WebView, and the Web UI can open Canvas in a browser tab.

Core Features/Characteristics

  • Real-time HTML/CSS/JS rendering
  • Proxy-driven interactive UI surface
  • WebSocket real-time push updates
  • A2UI attribute system
  • Remote JavaScript execution
  • Automatic screenshot capture
  • Real-time reload (live-reload)
  • Independent process isolation (port 18793)
  • Multi-platform support (macOS WebKit / iOS Swift UI / Android WebView / Web browser)
  • Chart and dashboard rendering
  • Telegram Canvas integration (openclaw-tg-canvas)

Business Model

As a core feature of OpenClaw, it is completely open-source and free.

Target Users

  • Users requiring visual output
  • Front-end developers (real-time preview and debugging)
  • Data analysts (charts and dashboards)
  • Developers needing proxy-generated UIs
  • Creative professionals (rapid prototyping)

Competitive Advantages

  • Proxy-driven real-time visualization (AI directly generates and updates UIs)
  • Multi-platform native rendering support
  • WebSocket real-time updates with minimal latency
  • Secure isolated operation
  • A2UI attribute system enabling bidirectional interaction between proxies and UIs

Market Performance

Canvas functionality has garnered attention from developers and creative professionals. Skywork AI released the "Ultimate Guide to OpenClaw Canvas." The community developed Telegram Canvas integration. Multiple platforms and blogs have provided detailed analyses and tutorials on Canvas.

Relationship with OpenClaw Ecosystem

Canvas embodies OpenClaw's philosophy of "having eyes and hands." It enables OpenClaw not only to perform backend tasks but also to create and display visual content. Together with Voice voice interaction and messaging channels, Canvas forms OpenClaw's complete multimodal interaction system.

Information Sources

External References

Learn more from these authoritative sources: