facebook-ad-librarylisted

# Meta Ad Library Eight tools for reading Meta's public Ad Library: every ad running on Facebook, Instagram, Messenger, Threads and Audience Network, for any advertiser, in any country. Everything here reads a public archive. Nothing writes, nothing posts, nothing touches an ad account. ## Before anything else **If the user names a brand, call `list_advertisers` first.** A keyword search returns whoever bid on that word, which for "nike" includes every reseller. A Page ID returns that advertiser's own account. Then pass the `page_id` to `search_ads`. That is the difference between "ads mentioning Nike" and "Nike's ads". Call `backend_status` when a tool reports something unavailable, before telling the user it cannot be done. Which backend is running decides whether transcription exists and whether calls cost money. ## The one thing to never get wrong **There is no performance data. Not here, not anywhere, at any price.** Another advertiser's conversions, revenue, cost per acquisition and return on ad spend are not public. Anyone claiming to sell competitor ROAS is guessing. What you can infer is **longevity**. An ad that has run for six months is probably working, because advertisers switch off ads that lose money. That is a hypothesis worth acting on. It is not a measurement. Say "has run 180 days, which suggests it is working", never "this ad converts at X" or "their best performer". `days_active` and `variants_using_creative` are the two honest signals. A high