Source Intelligence
Sweep 28 Aug 2026 ยท 16:06Z Build v2.1.251 479 read Stable v2.1.236 Latest v2.1.251 Next v2.1.251 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Prompt capture

WebFetch tool description

17 model strings share this prompt, byte for byte.

v2.1.235 20 lines 1503 chars sha256 b150728d3750 Plain text Whole capture

1IMPORTANT: WebFetch WILL FAIL for authenticated or private URLs. Before using this tool, check if the URL points to an authenticated service (e.g. Google Docs, Confluence, Jira, GitHub). If so, look for a specialized MCP tool that provides authenticated access.
3- Fetches content from a specified URL and processes it using an AI model
4- Takes a URL and a prompt as input
5- Fetches the URL content, converts HTML to markdown
6- Processes the content with the prompt using a small, fast model
7- Returns the model's response about the content
8- Use this tool when you need to retrieve and analyze web content
10Usage notes:
11 - IMPORTANT: If an MCP-provided web fetch tool is available, prefer using that tool instead of this one, as it may have fewer restrictions.
12 - The URL must be a fully-formed valid URL
13 - HTTP URLs will be automatically upgraded to HTTPS
14 - The prompt should describe what information you want to extract from the page
15 - This tool is read-only and does not modify any files
16 - Results may be summarized if the content is very large
17 - Includes a self-cleaning cache (entries expire after 15 minutes) for faster responses when repeatedly accessing the same URL
18 - 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.
19 - For GitHub URLs, prefer using the gh CLI via Bash instead (e.g., gh pr view, gh issue view, gh api).