Extract

Pulls structured data from unstructured text using LLM-powered extraction. You feed it messy content like emails, PDFs, or web pages along with a schema, and it returns clean JSON matching your spec. Handy when you're tired of writing brittle regex patterns or parsing logic for things like invoices, resumes, or customer support tickets. The approach is straightforward: it sends your content and desired output structure to an LLM, then validates the response. Works well for one-off extractions or when your input format varies too much for traditional parsers. Think of it as a flexible alternative to template-based scraping when you need semantic understanding over exact pattern matching.

skills.sh installs: 1.6K
GitHub stars: 29.5K
last updated: Aug 21, 2026

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Install

$ npx -y skills add alirezarezvani/claude-skills --skill extract --agent claude-code

Installs into .claude/skills of the current project.

Files

/si:extract — Create Skills from Patterns

Transforms a recurring pattern or debugging solution into a standalone, portable skill that can be installed in any project.

Usage

/si:extract <pattern description>                  # Interactive extraction
/si:extract <pattern> --name docker-m1-fixes       # Specify skill name
/si:extract <pattern> --output ./skills/            # Custom output directory
/si:extract <pattern> --dry-run                     # Preview without creating files

When to Extract

A learning qualifies for skill extraction when ANY of these are true:

Criterion	Signal
Recurring	Same issue across 2+ projects
Non-obvious	Required real debugging to discover
Broadly applicable	Not tied to one specific codebase
Complex solution	Multi-step fix that's easy to forget
User-flagged	"Save this as a skill", "I want to reuse this"

Workflow

Step 1: Identify the pattern

Read the user's description. Search auto-memory for related entries:

MEMORY_DIR="$HOME/.claude/projects/$(pwd | sed 's|/|%2F|g; s|%2F|/|; s|^/||')/memory"
grep -rni "<keywords>" "$MEMORY_DIR/"

SKILL.md on GitHub

Details

Repository: github.com/alirezarezvani/claude-skills
Categories: Documentation, Debugging
First seen: May 16, 2026