Hn Extract

HackerNews Extract

Extract a HackerNews post (article + comments) into single clean Markdown for quick reading or LLM input.

see Examples

What it does

• Accepts an HackerNews id, url, or a saved Algolia JSON file.
• Scrapes the linked article content with trafilatura, cleans HTML, and formats it.
• Fetches the story metadata and comment tree from https://hn.algolia.com/api/v1/items/<id>.
• Outputs a readable combined markdown file with original article, threaded comments, and key metadata.

Requirements

• uv installed and in PATH.

Install

No install beyond having uv. Dependencies will be installed automatically by uv into to a dedicated venv when run this script.

Usage Workflow (Mandatory for Agents)

When an agent is asked to extract a HackerNews post:

1. Run the script with an output path: uv run --script ${baseDir}/hn-extract.py <input> -o /tmp/hn-<id>.md.
2. Send ONE combined message: Upload the file and ask the question in the same tool call. Use the message tool (action=send, filePath="/tmp/hn-<id>.md", message="Extraction complete. Do you want me to summarize it?").
3. Do not output the full text or a summary directly in the chat unless specifically requested.

Usage

# run as uv script
uv run --script ${baseDir}/hn-extract.py <hn-id|hn-url|path/to/item.json> [-o path/to/output.md]

# Examples
uv run --script ${baseDir}/hn-extract.py 46861313 -o /tmp/output.md
uv run --script ${baseDir}/hn-extract.py "https://news.ycombinator.com/item?id=46861313"
uv run --script ${baseDir}/hn-extract.py data/item.json

• Omit -o to print to stdout.
• Directories for -o are created automatically.

Notes

• Retries are enabled for HTTP fetches.
• Comments are indented by thread depth.
• Article fetch uses trafilatura.fetch_url with liberal SSL handling to make it more usable.
• Sites requires authentication or blocks scraping may still fail.