source dump of claude code
1export const WEB_FETCH_TOOL_NAME = 'WebFetch'
2
3export const DESCRIPTION = `
4- Fetches content from a specified URL and processes it using an AI model
5- Takes a URL and a prompt as input
6- Fetches the URL content, converts HTML to markdown
7- Processes the content with the prompt using a small, fast model
8- Returns the model's response about the content
9- Use this tool when you need to retrieve and analyze web content
10
11Usage notes:
12 - IMPORTANT: If an MCP-provided web fetch tool is available, prefer using that tool instead of this one, as it may have fewer restrictions.
13 - The URL must be a fully-formed valid URL
14 - HTTP URLs will be automatically upgraded to HTTPS
15 - The prompt should describe what information you want to extract from the page
16 - This tool is read-only and does not modify any files
17 - Results may be summarized if the content is very large
18 - Includes a self-cleaning 15-minute cache for faster responses when repeatedly accessing the same URL
19 - When a URL redirects to a different host, the tool will inform you and provide the redirect URL in a special format. You should then make a new WebFetch request with the redirect URL to fetch the content.
20 - For GitHub URLs, prefer using the gh CLI via Bash instead (e.g., gh pr view, gh issue view, gh api).
21`
22
23export function makeSecondaryModelPrompt(
24 markdownContent: string,
25 prompt: string,
26 isPreapprovedDomain: boolean,
27): string {
28 const guidelines = isPreapprovedDomain
29 ? `Provide a concise response based on the content above. Include relevant details, code examples, and documentation excerpts as needed.`
30 : `Provide a concise response based only on the content above. In your response:
31 - Enforce a strict 125-character maximum for quotes from any source document. Open Source Software is ok as long as we respect the license.
32 - Use quotation marks for exact language from articles; any language outside of the quotation should never be word-for-word the same.
33 - You are not a lawyer and never comment on the legality of your own prompts and responses.
34 - Never produce or reproduce exact song lyrics.`
35
36 return `
37Web page content:
38---
39${markdownContent}
40---
41
42${prompt}
43
44${guidelines}
45`
46}