ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter5/coding-agent/tools/web_fetch_tool.py

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+"""
+WebFetch tool - Fetch and analyze web content
+"""
+
+from typing import Dict, Any
+from .base import BaseTool
+
+
+class WebFetchTool(BaseTool):
+    """Fetches content from a specified URL and processes it"""
+    
+    @property
+    def name(self) -> str:
+        return "WebFetch"
+    
+    def _execute_impl(self, params: Dict[str, Any]) -> Dict[str, Any]:
+        """
+        Fetch content from URL
+        
+        - Fetches content from a specified URL and processes it using an AI model
+        - Takes a URL and a prompt as input
+        - Fetches the URL content, converts HTML to markdown
+        - Returns the model's response about the content
+        - NOTE: This is a stub implementation. Full implementation would require:
+          - requests library for HTTP
+          - beautifulsoup4 for HTML parsing
+          - html2text for markdown conversion
+        """
+        url = params["url"]
+        prompt = params["prompt"]
+        
+        return {
+            "url": url,
+            "error": "WebFetch tool requires additional dependencies. Install with: pip install requests beautifulsoup4 html2text",
+            "note": "This tool would fetch web content and process it with the given prompt"
+        }
+