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版本数
在 OpenClaw 中安装
/install canvas
功能描述
Display and control HTML content on connected Mac, iOS, or Android nodes via a web-based canvas with live reload and remote actions.
安全使用建议
Install/use this only if you intend to control canvases on connected OpenClaw nodes. Keep the canvas root limited to non-sensitive display files, prefer the narrowest bind mode that works, confirm the target node and URL before actions, run eval only with trusted JavaScript, and avoid snapshotting canvases that show secrets or private data.
功能分析
Type: OpenClaw Skill
Name: canvas
Version: 1.0.0
The skill is classified as suspicious due to several high-risk capabilities that could be exploited as vulnerabilities. Primarily, the `eval` action allows arbitrary JavaScript execution within the WebView, posing a significant client-side vulnerability (e.g., XSS, potential data exfiltration if the WebView has access to local resources). Additionally, the skill serves local files from a configurable root directory (`canvasHost.root`), which could be misused to expose sensitive data if an attacker can control the directory or inject malicious files. The server's ability to bind to LAN or Tailscale further increases the attack surface for these potential exploits. While these capabilities are presented as features, they represent critical attack vectors if not properly secured at the agent or user input level.
能力评估
Purpose & Capability
The documented actions fit the stated purpose of presenting and controlling HTML on connected OpenClaw nodes, including navigation, JavaScript evaluation, screenshots, and live reload.
Instruction Scope
The workflow is user-directed and requires node IDs and URLs, but the artifact gives only brief descriptions for eval and snapshot and does not add strong safety or privacy warnings.
Install Mechanism
The artifact contains only SKILL.md documentation; metadata and static scan show no executable scripts, package install steps, or hidden installer behavior.
Credentials
Serving files from a configured canvas root over loopback, LAN, or Tailscale is proportionate to the canvas purpose, but the root directory should be limited to files intended for display.
Persistence & Privilege
No credentials or elevated privileges are requested, but displayed canvases can persist until hidden and live reload can automatically refresh connected canvases when files change.
如何使用
- 确保已安装 OpenClaw(本地或 Docker 部署)
- 在对话框中输入安装命令:
/install canvas - 安装完成后,直接呼叫该 Skill 的名称或使用
/canvas触发 - 根据 Skill 的参数说明提供必要输入,即可获得结构化输出
版本历史
v1.0.0
Initial release of the Canvas skill for OpenClaw:
- Adds ability to display HTML content on Mac, iOS, and Android node canvases
- Supports presenting, navigating, hiding, JavaScript eval, and screenshot actions for the canvas
- Integrates Tailscale and LAN binding options for easy remote access
- Includes live reload for instant updates during development
- Provides detailed setup, configuration, and troubleshooting instructions
- Serves files from a configurable root directory via a dedicated HTTP server
元数据
常见问题
Canvas 是什么?
Display and control HTML content on connected Mac, iOS, or Android nodes via a web-based canvas with live reload and remote actions. 它是一个面向 Claude Code / OpenClaw 的 AI Agent Skill 插件,目前累计下载 6039 次。
如何安装 Canvas?
在 OpenClaw 或 Claude Code 对话框中运行命令「/install canvas」即可一键安装,无需额外配置。
Canvas 是免费的吗?
是的,Canvas 完全免费(开源免费),可自由下载、安装和使用。
Canvas 支持哪些平台?
Canvas 跨平台运行,可在任意部署了 OpenClaw / Claude Code 的环境中使用(cross-platform)。
谁开发了 Canvas?
由 lura2(@lura2)开发并维护,当前版本 v1.0.0。
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