Find competitor ads and the advertisers behind them

Competitor ads are easiest to study one advertiser at a time. On Facebook and Instagram an advertiser is a Facebook page, and SellWinners lets you search those pages, rank them by how many ads they run and how far the ads reach, and open any page to list every ad it runs.

Start from a niche and you find the brands putting the most into Meta ads there, including ones you had never heard of. Start from a brand you know and you see its ad account from the outside: how many ads are live, how many are new, and where they run.

What an advertiser record shows

How to find competitor ads with advertiser search

Advertiser search lives in Explore, the SellWinners web app, where searches do not use your API requests.

1. Open Explore and go to Advertisers.
2. Type a niche word or a brand, and pick what it matches: All, Brand (the page name), Ad copy, Website copy or URL contains.
3. Open Filters and set a floor, such as a minimum of Active ads, and the countries your market is in.
4. Sort the list: Active ads for the biggest accounts, New ads 14d for the ones launching now, Growth 30d for the ones speeding up.
5. Open a page. Its tabs are Ads, Landing pages, Countries, History and Platforms, with buttons to save it, track it, or open it on Facebook and in Meta's Ad Library.

Rank activewear advertisers by active ads

The filters, by group

Advertisers take 58 named filters in the API. Explore shows them in groups:

• Activity: active ads, ads launched in a period, and the growth of its ads over 30 days.
• Reach and spend: total reach, page spend, CPM, and reach growth over 30 days.
• Audience: countries, main countries, ad countries, ad language, age and the gender its ads reach.
• Page: Facebook likes, Instagram followers, the page's creation date, and whether it runs partnership ads.
• Shop: the categories and technologies of its store, whether it links to a Shopify store, and that store's monthly visits and traffic growth.

Sort orders

Relevance, newest, active ads, new ads over 14 days, total reach, reach over 14 days, growth over 30 days, likes and followers together, and the share of its ads shown in the EU. An advertiser search reads its first 100 results, so narrow a broad search with filters to bring the advertisers you want into those 100.

Five ways to use advertiser search

Map the top advertisers of a niche

Search "activewear" in All fields, set Active ads to at least 50 and sort by active ads. The list is the brands that run the biggest Meta accounts in that niche right now.

Spot who is ramping up

Sort by New ads 14d, or set a floor on ads growth. A page that launched many ads in two weeks is testing or scaling, and its newest ads show what.

Find advertisers by their message

Switch the match to Ad copy and type a claim or an offer, such as "free shipping" or "clinically proven". You get the pages whose ads say it, whatever their names.

Find the brands behind a site

Switch to URL contains and type part of a domain to find the pages that advertise it, or to Website copy for words on the store itself.

Keep to your market

Add your countries under Audience and an Ad language, so the ranking only holds brands that advertise where you sell.

From a page to its ads

An advertiser's Ads tab is its Meta ad library: every ad of the page, sorted by newest, reach, spend, days running, duplicates or rank. Open any ad for its copy, transcript, hook, rank and reach history. The Meta ads library page explains how to read them, and our post on researching competitors' Meta ads walks through it step by step.

To keep watching a competitor without searching again, track the brand: you get its top ads, the ads gaining rank, its hooks and its landing pages in reports.

Advertiser search from the API and your AI agent

The search takes the same filters as Explore, by name. This asks for skincare brands by page name, with at least 20 live ads, fastest growing first:

# Search advertisers with filters
curl -X POST "https://api.sellwinners.com/v1/advertisers/query" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"query": "skincare", "searchType": "brand", "minActiveAds": 20, "sortBy": "growth30d", "limit": 20}'

POST /v1/advertisers/query Parameters and fields in the docs

Each row is a page with its profile, live ads, reach and newest ads. With a page's id, one call gives the full record and another lists its ads:

# Meta ads of one advertiser
curl "https://api.sellwinners.com/v1/advertisers/ADVERTISER_ID/ads?sortBy=reach&limit=20" \
  -H "Authorization: Bearer YOUR_API_KEY"

GET /v1/advertisers/{advertiser_id}/ads Parameters and fields in the docs

From an AI agent, search_advertisers takes the same search, match mode and sort. Ask "Which skincare brands launched the most Meta ads in the last two weeks?" and it searches, ranks and answers, with the same key and credits as the API. lookup turns a brand name or a domain into the page ids the other tools take.

Every parameter is in the advertisers API reference.

Advertisers on Free and on paid plans

Advertiser search and advertiser pages are on paid plans. A brand's Meta ads stay open on every plan: on Free, type the brand in the Brand field of a Meta ad search, or open its page, whose Ads tab lists its ads. The demo brands' pages are open in full on the website. The pricing page compares what each plan includes.