Meta Catalog Feed Checker Skill

Check a Facebook / Instagram (Meta) catalog product feed before you upload it to Commerce Manager: what will stop items uploading, what Meta will ignore, and what weakens your Advantage+ catalog ads and shop, in plain words. Then write a format-fixed copy with every change logged.

python3 -m metafeed check products.csv
python3 -m metafeed check products.csv --fix products.fixed.csv --currency USD   # safe fixes + products.fixed.changes.csv
python3 -m metafeed check feed.xml --issues issues.csv --json                      # RSS/Atom XML, CSV of issues, JSON for scripts

• Upload blockers: the 8 required fields (id, title, description, availability, condition, price, link, image_link), at least one of brand / gtin / mpn, and price format (9.99 USD: number, space, ISO 4217 code, no symbols).
• Repeated ids: Meta ignores *every* instance of a repeated id, so both products disappear.
• Values: availability (in stock, out of stock), condition, gender, age_group, status; Google Merchant Center values like in_stock or preorder that Meta's product feed doesn't use.
• Content: length limits (title 200, 65 recommended; description 9999), HTML, capitals or links in descriptions, description same as title, hex colours, "Size L", "US10".
• Links and images: http(s) URLs, product links that point to Facebook or Instagram instead of your site, non-JPEG/PNG images, more than 50 additional images.
• Identifiers, sales and variants: GTIN length and check digit, ISBN-10, sale_price below price in the same currency, sale date format, item groups whose variants don't differ, core attributes misused in additional_variant_attribute.
• Other fields: shipping (US:NY:Ground:9.99 USD), shipping_weight, internal_label (['summer','trending']), custom_number range, native_commerce values, quantity, legacy names (visibility, inventory, product_tags).

--fix writes a new file (never your original) and only changes formats it can be sure of: Meta's supported values, price format (with --currency for bare numbers), GTIN dashes and spaces, "Size " prefixes. It never invents GTINs, brands or ids. Each change goes in <out>.changes.csv.

Copy skills/meta-catalog-feed into your agent's skills folder (Claude Code: .claude/skills/), or install the folder as a plugin. Ask "check my Facebook catalog feed".

Run ./demo.sh for a sample feed and ./run_tests.sh for the tests. Python 3.9+, no dependencies, works offline.

It checks the feed file, not the images themselves, your product pages or Meta's policy review, and the India and WhatsApp-specific fields aren't covered. A clean report doesn't guarantee approval. Also selling on Google? See the Google Merchant Center Feed Checker Skill.