Content Summarizer

Fetch any URL and produce a structured content summary with extractive summarization, AI enhancement prompts, and structured output templates. Extracts clean text from HTML, identifies key sentences, generates metadata, and provides ready-to-use prompts for AI summarization. Perfect for content repurposing, research pipelines, and newsletter workflows.

Transform any URL or raw text into structured, actionable content summaries using extractive summarization + AI enhancement prompts.

What This Skill Does

1. Fetches any URL and extracts clean text (removes HTML, nav, scripts, ads)
2. Extracts key sentences algorithmically (extractive summarization — no API needed)
3. Generates metadata (title, word count, reading time)
4. Outputs a structured markdown template + AI enhancement prompt ready for any LLM

The AI enhancement prompt makes the extracted content easy to summarize with MiniMax, GPT-4o, or Claude.

Quick Start

# Summarize a URL (outputs to terminal + /tmp/summaries/)
./scripts/url-to-summary.sh https://example.com/article

# Summarize text directly (from argument or pipe)
./scripts/summarize.sh "Your article text here..."
cat article.txt | ./scripts/summarize.sh

# Custom model for AI prompt
./scripts/url-to-summary.sh https://example.com --model openai

Scripts

url-to-summary.sh — Full Summary from URL

./scripts/url-to-summary.sh <url> [--model minimax|openai|anthropic]

Fetches URL, extracts clean text, produces:

• Extracted key sentences (extractive summarization)
• Structured markdown template (summary, tweet hook, key takeaways)
• AI enhancement prompt — copy-paste into any LLM for full summarization
• Metadata (title, word count, reading time)

Output saved to /tmp/summaries/summary-TIMESTAMP.md

summarize.sh — Summarize Text Directly

./scripts/summarize.sh "Your text..."
cat file.txt | ./scripts/summarize.sh

Same output as url-to-summary.sh but for raw text input.

Output Format

# Content Summary

**Source:** [url]
**Title:** [extracted or unknown]
**Stats:** ~1,200 words | ~6 min read

## Key Sentences (Extractive Summary)
[Top 15-20 most meaningful sentences from the text]

## Structured Summary Template
[TODO fields for: what, why, key points]

## Tweet Hook
[TODO: Compelling one-liner]

## Key Takeaways
1. [TODO]
2. [TODO]
3. [TODO]

## AI Enhancement Prompt
[Ready-to-use prompt with extracted text embedded]

Environment Variables

Variable	Default	Description
OUTPUT_DIR	/tmp/summaries	Where to save summary files
MODEL	minimax	AI model for enhancement prompt

Use Cases

• Content repurposing: Fetch articles, extract key points, feed into content pipeline
• Research pipeline: Batch summarize 20 URLs, collect key points, synthesize insights
• Newsletter workflow: Fetch sources, generate structured summaries, assemble newsletter
• Quick reading: Extract key sentences from long articles for rapid triage

Notes

• Uses extractive summarization (algorithmically selects important sentences) — no API key needed
• AI enhancement prompt is the value-add: paste into MiniMax/GPT/Claude for full abstractive summary
• HTML extraction removes scripts, styles, nav, footer, ads — focuses on article body
• Limited to 15,000 characters of extracted text to keep context manageable

Output Format

## Summary

[2-3 paragraph summary of the content]

## Tweet Hook
> [One compelling, shareable sentence that captures the essence]

## Key Takeaways
1. [First key point]
2. [Second key point]
3. [Third key point]

---
*Source: [URL] | ~X min read | ~Y words*

Environment Variables

Variable	Required	Default	Description
SUMMARIZER_MODEL	No	auto	LLM model for summarization (or let the agent auto-select)
MAX_TOKENS	No	500	Max tokens in summary output

Usage Examples

# Summarize a blog post
./scripts/url-to-summary.sh https://yourcompetitor.com/blog/industry-trends

# Process a research paper
./scripts/summarize.sh "$(curl -sL https://arxiv.org/pdf/2301.00001.pdf | head -c 10000)"

# Quick key points for a meeting
./scripts/key-points.sh https://news.ycombinator.com/item?id=12345678

# Use with OpenClaw: feed the output directly into your workflow
SUMMARY=$(./scripts/url-to-summary.sh https://example.com/article)
echo "$SUMMARY" | ./scripts/key-points.sh

Tips

• For better results, provide clean article URLs (avoid paywalls and heavy JS pages)
• Use MAX_TOKENS=1000 for longer, more detailed summaries
• Chain with other skills: competitor-tracker alerts → content-summarizer → social posting
• The tweet hook is designed to be engaging, not just a truncated sentence
• Key points should be actionable insights, not just topic labels

Dependencies

• curl — for fetching URLs
• OpenClaw agent with web_fetch tool for content extraction (used internally by the agent)