Summarize

When to use

• User shares a URL and wants to know what it contains
• User asks to summarize a local file
• User says "tldr", "fass zusammen", "was steht da drin", "key points", "zusammenfassen"

Steps

1. Determine whether the input is a URL or a local file path.
2. For a URL: use web_fetch to retrieve the content. If web_fetch fails or returns too little text, fall back to browser with action=extract.
3. For a local file: use read to load the content.
4. Produce a structured summary in the same language the user used.

Output format

Title (if available)

Summary 2–4 sentences capturing the main idea.

Key points

• Point 1
• Point 2
• Point 3 (add more if needed)

Source: <url or file path>

Notes

• If the content exceeds 10,000 characters, focus on the first 10,000.
• Always reply in the same language as the user's request.
• If neither web_fetch nor browser returns usable content, tell the user and suggest alternatives.