Summarize

Summarize skill provides a dedicated, optimized summarization pipeline for your Claude agent. While Claude can summarize natively, this skill adds structured formatting options, length control, and chunked processing for documents that exceed context limits — enabling summarization of 100,000+ word documents by splitting and hierarchically merging summaries.

Input formats supported: plain text, Markdown, HTML (auto-stripped), PDF text (via PDF Reader integration), and URLs (auto-fetched). Output formats include: one-line TL;DR, bullet-point key takeaways, executive summary paragraphs, structured sections with headers, and Q&A format where the skill generates questions and answers from the source material.

Configure summary style — formal business tone for reports, casual tone for personal notes, technical precision for documentation. Set target word count and the skill iterates to hit the range accurately. Language translation is built in: summarize a French article into English bullet points in one step. The skill also supports extractive summarization (lifting exact sentences from the source) alongside abstractive (paraphrasing), useful when verbatim quotes matter for accuracy.

Use Summarize as a middleware layer in larger pipelines: Deep Research Agent fetches sources → Summarize condenses each → your agent synthesizes the summaries into a final report. No API key required; runs entirely within your Claude instance.

Installation

clawhub install summarize

Install: clawhub install summarize