High Signal Extractor

A Codex skill for strict high-signal content extraction.

It turns articles, X/Twitter threads, Xiaohongshu posts, screenshots, and OCR text into concise Traditional Chinese knowledge cards. The skill is intentionally selective: it preserves actionable, insightful, reusable ideas and rejects fluent but low-value content.

What It Does

• Extracts high-quality ideas from long-form and social content
• Scores content by actionability, insight, and reusability
• Produces one searchable Markdown knowledge card by default
• Keeps source evidence in the original language
• Handles screenshots with strict visible-text rules
• Outputs a short rejection when content is not worth saving

When To Use It

Use this skill when you want Codex to:

• Extract high-signal ideas from an article or thread
• Judge whether a piece of content is worth saving
• Turn a screenshot into a knowledge card
• Convert Xiaohongshu or X/Twitter content into reusable notes
• Filter low-value content before it enters your knowledge base

Example prompts:

Use $high-signal-extractor to turn this thread into a knowledge card.

這篇值得保存嗎？幫我用 high-signal-extractor 萃取高信號內容。

幫我看這張截圖有沒有值得保存的洞察。

Quality Bar

The skill evaluates each candidate idea on three criteria:

• 可行動: leads to a concrete next step, decision, experiment, question, or operation
• 洞察性: reveals causality, a counterintuitive point, a tradeoff, or a hidden pattern
• 可複用: can become a principle, checklist, framework, template, or decision rule

Content normally needs at least two criteria scoring 4/5 or higher to become a saved card.

Output

For strong content, the skill produces:

• A concrete, searchable title
• Save judgment: 必存 or 可選保存
• Quality scores
• One-sentence insight
• Source evidence and context
• Reusable principle
• Applicable and non-applicable scenarios
• Suggested future uses
• Tags

For weak content, it produces a short 不建議保存 rejection with reasons and what would need to be added for the content to become worth saving.

Install

Clone this repository into your Codex skills directory:

mkdir -p ~/.codex/skills
git clone https://github.com/YSKMsky/high-signal-extractor.git ~/.codex/skills/high-signal-extractor

Then start a new Codex session so the skill metadata can be discovered.

Files

• SKILL.md: the skill definition and workflow
• agents/openai.yaml: UI metadata for Codex