image-analysis
Reference for auction item image analysis — what to look for in photos of auction items, how to extract catalog-relevant information from images, and how the extension's AI image analysis works.
npx skills add majiayu000/claude-skill-registry --skill image-analysis-mixxmastermike123-auctionet-extension --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Auction Item Image Analysis Reference Use this skill when working on image analysis features, Claude Vision prompts, or photo-based cataloging. Focus on: `$ARGUMENTS` ## How Image Analysis Works in the Extension ### Architecture ``` Item images (up to 5 slots) → base64 encoding → Claude Vision API ↓ Structured JSON response: - Title, description, condition - Artist, period, materials - Keywords, estimate, reserve ``` ### Image Slots (categorized) | Slot | Purpose | What to extract | |------|---------|----------------| | Front/Main | Primary identification | Object type, style, material, overall condition | | Back/Reverse | Maker marks, construction | Stamps, signatures, labels, construction method | | Markings | Stamps, hallmarks | Manufacturer, date, origin, purity (silver/gold) | | Signatures | Artist identification | Name, date, numbering, technique notes | | Condition | Damage documentation | Specific flaws, repairs, wear patterns | ### Image Processing - Images exceeding 5MB auto-resized via canvas (`_resizeBase64Image`) - Max dimension: 1400px (progressively reduced if still too large) - Output: JPEG at 0.82 quality (reduced to 0.5 at minimum) - Domain whitelist: `auctionet
- How Image Analysis Works in the Extension
- Architecture
- Image Slots (categorized)
- Image Processing
- What to Look For (by category)
- Art & Paintings
- Furniture
- Silver & Gold
- Glass & Ceramics
- Rugs & Textiles
- Watches & Clocks
- Weapons & Militaria
- AI Prompt Patterns for Image Analysis
- Hallucination Prevention
What does the image-analysis skill do?
Reference for auction item image analysis — what to look for in photos of auction items, how to extract catalog-relevant information from images, and how the extension's AI image analysis works.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill image-analysis-mixxmastermike123-auctionet-extension --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.