AgentSkillsCN

web-browse

为智能体提供网页浏览能力，助力其进行研究与信息检索。支持通过JavaScript渲染抓取网页、截取屏幕截图，以及提取文本内容。所有浏览均在沙箱环境中进行，且禁止访问内部网络。

SKILL.md
--- frontmatter
name: web-browse
description: Web browsing capability for agents to research and find information. Allows fetching web pages with JavaScript rendering, capturing screenshots, and extracting text content. All browsing is sandboxed and internal network access is blocked.

Web Browse Skill

Enables agents to browse the web for research and information gathering. Pages are rendered with JavaScript support, and agents can capture screenshots or extract text content.

Security

  • •Sandboxed: All browsing runs in isolated container environment
  • •Internal network blocked: Cannot access private IP ranges (10.x.x.x, 172.16-31.x.x, 192.168.x.x, localhost)
  • •Timeouts: 30 second maximum per page load
  • •Audit logging: All accessed URLs are logged for security review

Usage

The skill provides three main functions accessible via the web-browse CLI:

Fetch a page and extract text

bash
web-browse fetch "https://example.com/docs" --output text

Returns the rendered text content of the page.

Fetch a page and save HTML

bash
web-browse fetch "https://example.com/docs" --output html

Returns the rendered HTML after JavaScript execution.

Take a screenshot

bash
web-browse screenshot "https://example.com/docs" --output screenshot.png

Saves a screenshot of the page. Use --full-page for full page capture.

Advanced options

bash
# Wait for specific selector before capturing
web-browse fetch "https://example.com" --wait-for ".content-loaded"

# Set viewport size
web-browse screenshot "https://example.com" --viewport 1920x1080

# Full page screenshot
web-browse screenshot "https://example.com" --full-page --output full.png

Examples

Research documentation

bash
# Fetch and read TypeScript docs
web-browse fetch "https://www.typescriptlang.org/docs/handbook/intro.html" --output text

Capture visual state

bash
# Screenshot a dashboard
web-browse screenshot "https://example.com/dashboard" --viewport 1920x1080 --output dash.png

Get rendered HTML for parsing

bash
# Get HTML after JS execution
web-browse fetch "https://example.com/spa" --wait-for "#app-loaded" --output html

Limitations

  • •Cannot access internal/private network addresses
  • •Maximum 30 second timeout per page
  • •Single page at a time (no parallel browsing)
  • •No persistent cookies or sessions between calls
  • •All activity is logged for audit

Environment Variables

  • •WEB_BROWSE_AUDIT_LOG: Path to audit log file (default: /tmp/web-browse-audit.log)