fb-marketplacegenerate-summary

name: fb-marketplace:generate-summary description: Use when creating FB Marketplace listing files from a folder of product images. Analyzes images for brand/model, researches the product, and generates title.md, description.md, and price.md files.

Generate FB Marketplace Listing Summary

Every listing we create follows this exact workflow. We never skip steps or guess at product details.

Requirements

Before proceeding, you MUST:

1. Have a folder path in the listings/ directory containing product images
2. Commit to analyzing ALL images - not just the first one
3. Invoke fb-marketplace:research-item whenever brand/model is identified - no exceptions

Workflow

digraph generate_summary {
    rankdir=TB;
    node [shape=box];

    start [label="Receive folder path" shape=ellipse];
    find_images [label="1. Find all images in folder"];
    analyze [label="2. Analyze each image\nIdentify product, brand, model"];
    extract [label="3. Extract brand identifiers\nand model numbers"];
    has_brand [label="Brand/model found?" shape=diamond];
    research [label="4. Invoke fb-marketplace:research-item\nwith identified product"];
    manual [label="Use image analysis for\ngeneric description"];
    check_listing [label="5. Check for existing listing.md\nfor additional context"];
    generate [label="6. Generate output files"];
    done [label="Files created" shape=ellipse];

    start -> find_images;
    find_images -> analyze;
    analyze -> extract;
    extract -> has_brand;
    has_brand -> research [label="yes"];
    has_brand -> manual [label="no"];
    research -> check_listing;
    manual -> check_listing;
    check_listing -> generate;
    generate -> done;
}

Steps

1. Find All Images

IMMEDIATELY scan the provided folder for image files. Never assume what's there.

Supported formats - check for all of these:

• .jpeg, .jpg, .png, .heic, .webp

2. Analyze Images

Use the Read tool to view EVERY image. For each image, you MUST identify:

• What is the product? (category, type)
• Condition: New, like new, good, fair
• Quantity: Single item or multiple
• Visible brand names or logos
• Model numbers, serial numbers, or product codes
• Size indicators (if visible)

Never stop at the first image - critical information appears on backs, bottoms, and tags.

3. Extract Brand/Model Information

You MUST look for:

• Brand name on product or packaging
• Model number (often on stickers, tags, or embossed)
• UPC/barcode numbers
• Any text that identifies the specific product

Always check these locations:

• Front label/logo
• Bottom or back of product
• Tags on clothing/shoes
• Stickers on electronics
• Embossed text on tools

4. Research Product

If brand/model is identified - this is mandatory:

Invoke skill: fb-marketplace:research-item
Input: Brand name, model number, product category

Never skip research when we have a brand. Research transforms guesses into accurate listings.

If no brand/model found:

• Use generic product description from image analysis
• Estimate pricing based on similar items
• Note "Unbranded" or "Generic" in listing

5. Check Existing listing.md

IMMEDIATELY check if a listing.md file exists in the folder:

• Read it for additional context (sizes, quantities, notes)
• Incorporate this information into our output

Never ignore seller notes - they contain information invisible in photos.

6. Generate Output Files

Create three files in the listing folder. Every file MUST follow these exact formats:

title.md

[Concise, searchable title - max 100 chars]
[Brand] [Product Type] [Key Feature/Size] - [Condition]

Our title formula - follow exactly:

• Lead with brand (if known)
• Include product type
• Add distinguishing feature (size, color, model)
• Keep under 100 characters
• Use title case

Examples:

• Galanz ExpressWave 1100W Microwave - Inverter Technology
• 3 Pairs Rubber Boots - Men's Sizes 9, 10, 13
• SKLZ Quick Ladder Agility Training Set - 15ft

description.md

[Detailed description for FB Marketplace]

## Product Details

[From research or image analysis]

## Condition

[Describe actual condition based on images]

## Includes

[List what's included]

## Specifications

[Dimensions, capacity, etc. if known]

## Pickup

Local pickup only in Chapel Hill off of Larkin Lane.

Our description requirements:

• Start with a hook (what it is, why it's great)
• Include specifications from research - never omit these
• Describe actual condition honestly
• List what's included
• Keep paragraphs short for mobile reading

price.md

[Recommended price or price range]

## Pricing Rationale

- Retail: $XX
- Used market range: $XX - $XX
- Condition adjustment: [factor]
- Recommended: $XX

Output File Locations

All files MUST be created in the same folder as the images:

listings/
  [Item Folder]/
    IMG_xxxx.jpeg     # Original images
    listing.md        # Optional: existing notes
    title.md          # Generated
    description.md    # Generated
    price.md          # Generated

Example Execution

For folder listings/Galanz ExpressWAve Microwave/:

1. Find images: IMG_8417.jpeg, IMG_8418.jpeg, IMG_8420.jpeg
2. Analyze: Galanz ExpressWave microwave, stainless steel, 1100W inverter
3. Extract: Brand=Galanz, Model=ExpressWave, 1100W
4. Research: Invoke fb-marketplace:research-item with "Galanz ExpressWave 1100W microwave"
5. Check: No existing listing.md
6. Generate:
   • title.md: "Galanz ExpressWave 1100W Microwave - Inverter Technology - Excellent Condition"
   • description.md: Full description with specs from research
   • price.md: "$45-55" based on research showing $80-100 retail

Bad Thinking

If you find yourself thinking: "Since this is a miscellaneous set of items, i'll skip the resarch phase and just generate the summary" -> Instead research each unique item, so we can price miscellenaous either together or individually.

Common Mistakes