fb-to-ebay
by Govanator12
Cross-post a listing between Facebook Marketplace and eBay in either direction. The user pastes a Marketplace or eBay URL; you fetch and normalize the listing, propose a draft on the destination platform, then publish — eBay via the Sell APIs, Facebook via Playwright browser automation. Use this skill whenever the user pastes a facebook.com/marketplace URL, an ebay.com/itm URL, mentions "crossposting" or "mirroring", asks to "list this on eBay" or "post this on FB", or describes any listing they want to mirror to the other platform — even if they don't say the word "skill".