New Plans from €27 a month · billed monthly, quarterly or yearly

Find the stores and ads that are winning now

Stores, products, ads, advertisers and emails in one search, fresh every day. Browse them, build on the API, or ask your AI agent.

Each shop's Meta ad library on Free No card required AI agents on Free too, the API on paid plans
The market · unsorted What you get · structured
Glow LabsSponsored
Meta

The serum everyone's asking about. Back in stock.

Shop now ›
184K EU reach · 42 days
+23.5K this week
stride.coPromoted
TikTok

Built for the last mile.

♥ 96K▶ 1.8M
1.8M views · 96K likes
5.7% engagement
Peak RunningSponsored · Google
Google
peakrunning.com › racersCarbon Plate Racers | Peak Running

Free returns. Ships today. Shop the race-day collection.

38 days running
64 live Google ads
Lumen Homelumenhome.co
Store
visits / month
412K visits / month
+12.5% in 30 days
Brewhouseto you · newsletter
Email
Your first bag is on us
3 emails a week
38 in 90 days
Volt AudioSponsored
Meta

40 hours. Zero cables.

Learn more ›
96.4K EU reach
7 copies running
Explore

Browse the data in your browser

Explore is the web app on this website. Search stores and the products they sell, the ads brands run on Meta, Google, YouTube and TikTok, the advertisers behind them and the emails they send. Save what you find to boards and follow brands day by day.

  • Unlimited on paid plans, within fair use, and never uses your API and MCP credits
  • On Free: shop search, any store's overview, each shop's Meta ad library and the demo brands in full
  • The same data your API key and your AI agent get
  • The video library: UGC videos with their hooks and scripts. Free shows the first ones, paid plans all of them
  • The Chrome extension: any store's figures beside the page, and save buttons on the ad libraries
  1. ShopsStores by traffic and sales
  2. ProductsStore products by sales and ads
  3. Meta adsFacebook and Instagram ads
  4. Google adsSearch, YouTube and Shopping ads
  5. TikTokPosts and ads by views
  6. AdvertisersThe pages behind the ads
  7. EmailsWhat brands send
  8. VideosUGC videos with hooks and scripts
  9. Brand trackerFollow brands day by day
  10. BoardsSave what you find
What's inside

Seven kinds of data, one account

Stores and the products they sell, ads on three platforms, the advertisers behind them and the emails brands send. They all work the same way, so what you learn on one carries over to the rest.

01 / Shopify stores

Shopify stores

Search stores by name, domain or country. Get traffic, revenue estimates, products, best sellers, socials and similar shops.

TrafficRevenue estimateProductsBest sellersSocialsSimilar shops
# REST
curl "https://api.sellwinners.com/v1/shops?search=shoes&country=US" \
  -H "X-API-Key: $API_KEY"

# or let your agent call it over MCP
search_shops(query="…")
Creatives included

Meta and TikTok ads come with their images and videos

Creatives are hosted for you, so you can show them straight away. /v1/media returns a flat, render-ready list: image and video URLs, duration, a thumbnail and the advertiser, ready for <img> and <video>. A Google video ad comes as its thumbnail, with a link to watch it on Google.

GET /v1/media?search=sneakers&mediaType=video 200 OK
Response
"data": [{
  "advertiser": { "name": "Stride Co." },
  "mediaType": "video",
  "videos": [{
    "url": "…/v1/media/file/4c1e….mp4",
    "durationSec": 21
  }],
  "thumbnailUrl": "…/v1/media/file/b7a0….jpg"
}, …],
"pagination": { "page": 1, "hasMore": true }
Rendered
0:21
Stride Co.
IMG
Glow Labs
0:15
Tempo
IMG
Volt Audio
0:09
Mugshot
IMG
Lumen Home
  • Served from our CDNImage and video URLs load fast and embed anywhere.
  • Filter what you needImages or videos, by country, newest or highest reach.
  • No key, no creditsMedia URLs work without a key and never use credits.
What you can do

From a first search to a competitor's playbook

Four things teams use SellWinners for. Each one works from your code and through your AI agent.

01 / Stores

Find stores that are growing

Search or browse Shopify stores, then narrow the list by country, monthly visits, traffic growth, estimated sales, units sold, active ads, product count, best-seller price, apps, themes and tracking pixels.

  • One shop record gives the profile, traffic history, top countries and estimated monthly sales
  • Best sellers, products, apps, pixels and social follower history
  • Linked advertiser pages, latest ads, emails and similar shops
02 / Ads

See what a brand is running and how it performs

Search Meta ads by text and combine 122 named filters, such as status, media type, days running, reach, estimated spend, countries, language and call to action. Google ads and TikTok ads and posts are searchable too.

  • One ad record gives the creative media, copy, headline, call to action and landing page
  • Reach with its daily history, estimated spend and rank on the advertiser's page
  • Video transcript and opening hook when available
03 / Brand trackers

Read a competitor's playbook

Track a brand by domain, shop or Facebook page, then read reports on its advertising: the hooks that open its videos, its video scripts, headlines, ad texts and landing pages.

  • Top ads by rank and by reach, and the ads that are gaining rank
  • Creative tests grouped by launch day, partners running ads for the brand, format mix, and audience by country, age and gender
  • Launches, live ads and reach over time, plus a daily record of ad texts and headlines that starts the day you track the brand
04 / Boards and favorites

Save and share what you find

Keep ads, shops, products and emails on boards, and your favorites in folders, from your code or by asking your agent. A share link opens a page on this site that anyone can view without an API key.

  • Boards for the ads, shops, products and emails worth keeping
  • Public share links for a board, a favorite folder or a single ad
  • The same saved items over REST and over MCP
How it fits together

Seven datasets in, one answer out

Every request is read live from stores, ad libraries and inboxes, cleaned into one shape, and handed back to your code or to your AI agent in the same second.

  • 7datasets behind one key
  • 231REST endpoints
  • 73MCP tools for agents
  • JSONone clean shape everywhere
Use cases

What you can build with SellWinners

Common starting points, each with the endpoints and tools behind it.

How it works

From sign-up to first result in three steps

01

Create a free account

Sign up with your email and start free, with no card. The Free plan includes the web app and the MCP server (150 credits a month), without the API.

02

Create a key

Create keys in your dashboard, one per app or environment, within the Free plan's allowance or a paid plan's, and revoke any of them in one click.

03

Search, or let your agent do it

Send requests with your key, or connect your AI agent to the same data. Watch usage live in your dashboard.

Find the top video ads for running shoes this month
search_ads(query: "running shoes", media_type: "video")
AgentHere are three brands running video ads for running shoes right now, with their landing pages and creatives.
Stride Co.video · 0:21
Peak Runningvideo · 0:15
Tempovideo · 0:30
{
  "mcpServers": {
    "sellwinners": {
      "url": "https://mcp.sellwinners.com/mcp",
      "headers": { "X-API-Key": "YOUR_API_KEY" }
    }
  }
}
Built for AI agents

Let your AI agent do the research

Connect Claude, Cursor, VS Code or any MCP client, and your agent can look up stores, products, ads and brands by itself. It works on the same data with the same key, through 73 ready-made tools.

  • Hosted for you: no install, just a URL and your key
  • Works with any client that supports streamable HTTP
  • Shares your plan's credits with the REST API
Questions it can answer
  • Which stores compete with northwind-outdoors.example?find_similar_shops
  • What changed in the ads of the brands I track over the last 7 days?analyze_brand_changes
  • Find long-running video ads for camping gear and compare how they open.search_adsscan_ad
  • Save the best three to a board and give me a link to share.add_board_itemcreate_board_share_link

Connect your agent

The console

A dashboard that shows where every request goes.

  • Live credits and usage API and MCP credits used this month, what's left and when they renew. The web app is never counted.
  • Traffic by dataset Successful and failed calls per day, success rate, median response time and which datasets you use most.
  • Playground, keys and plans Send real requests in the browser and copy the curl. Keys are shown once; plan changes apply in place.
See the API plans
Pricing

Start free. Pay as you grow.

Start free. The Free plan includes the web app and the MCP server (150 credits a month), without the API. Paid plans add every dataset and the API, with more credits. Upgrade, downgrade or cancel from your dashboard.

Free

Shop search, each shop's page with its Meta ad library and the demo brands in full.

€0
Free forever · no card
  • 150 credits / month
  • 10 requests / minute
  • MCP server access
  • Not included: REST API
  • Web app: Shops and the demo brands
  • A shop's own Meta ads
  • Shops (search and overviews, first 10 results)
  • More data (videos)
  • Community support
  • Compare plans

Starter

For side projects and early products.

€27 / monthSave 30%
€324 billed yearly · cancel any time
  • 5,000 credits / month
  • 60 requests / minute
  • 5 lookups / week
  • 2 brand trackers
  • 1 user included
  • All data endpoints
  • The API and the MCP server
  • The video library in the web app
  • Web app: unlimited, fair use
  • The Chrome extension in full
  • Email support
  • Compare plans

Business

For teams running at scale.

€69 / monthSave 30%
€828 billed yearly · cancel any time
  • 20,000 credits / month
  • 300 requests / minute
  • Unlimited lookups
  • 20 brand trackers
  • 3 users included+€23 per extra seat with 4,000 more credits a month
  • All data endpoints
  • The API and the MCP server
  • The video library in the web app
  • Web app: unlimited, fair use
  • The Chrome extension in full
  • Dedicated support
  • Compare plans
Custom

Build your own

Your own mix of credits, rate limit and keys. A plan's own credits cost what that plan costs. Changed or cancelled any time.

from€39 / month
Billed monthly · prorated changes
  • 5,000 to 1,000,000 credits / month
  • Up to 1,000 requests / minute
  • MCP server access
  • Web app: unlimited, fair use

Prices in EUR a month, billed monthly, quarterly or yearly: a quarterly or yearly plan is paid 3 or 12 months at a time. API and MCP credits renew on the 1st of each month (UTC) on every billing period. 1 credit = 1 result returned: one brand's details, one ad, or one row of a list. An empty result is free. On paid plans, top-up credits are sold on the billing page and never expire. The web app is unlimited on paid plans. The Free plan includes the web app and the MCP server (150 credits a month), without the API. Cancel any time.

FAQ

Questions, answered

What does a credit pay for?

1 credit = 1 result returned: one brand's details, one ad, or one row of a list. An empty result is free. An MCP tool call costs the results it returns, like the API. Failed requests, errors, calls your plan doesn't include, rate-limited calls, lookups and filter values cost nothing. Loading media files from the URLs in our responses is free and unlimited. Browsing the web app never uses credits.

What does the Free plan include?

The web app, with no card. Search Shopify stores by domain and open their overview (a search shows its first 10 results, by relevance), and open each shop's Meta ad library on its page. The demo brands are open in full on the website. Free also has the Shopify app and theme detectors (20 store checks a month), recently viewed shops on the Shops page and a search across everything you saved before. The Free plan includes the MCP server too: 150 credits a month, 10 requests a minute, the first 10 results of each search. Google and TikTok ads, emails, advertisers, product search, brand trackers, saving to boards and the API are on paid plans. The plan comparison has the details.

Does using the web app use credits?

No. The web app is never metered: it is unlimited on paid plans, within fair use (a few requests at a time per account), and on Free it covers Shops, each shop's Meta ad library and the demo brands in full, with the Shopify app and theme detectors (20 store checks a month), recently viewed shops on the Shops page and a search across everything you saved before. Only API requests and MCP tool calls use credits, on Free within its 150 credits a month.

Is the Chrome extension included?

Yes, on every plan. Free has store detection, the tools and a basic store summary; paid plans have everything in its panel. It never uses credits. See what it does.

What happens when I run out of credits?

Further calls return 402 insufficient_credits until your monthly credits renew on the 1st of the month (UTC). On a paid plan, the workspace's owner can buy top-up credits on the billing page (€1 buys 120, from €10): they are used after the month's credits and never expire. You can also upgrade at any time and the bigger allowance applies immediately.

Is the MCP server included?

It's included on the Starter, Pro and Business plans. The Free plan includes the MCP server too: 150 credits a month, 10 requests a minute, the first 10 results of each search. MCP tool calls share your plan's monthly credits with the REST API, and you use the same API key for both.

Which AI tools work with the MCP server?

Any client that supports remote MCP servers over streamable HTTP with custom headers, such as Cursor, VS Code, Claude (through mcp-remote) and agent frameworks. Setup snippets are on the MCP page and in your dashboard.

How fresh is the data?

Data is collected continuously, and every search reads the latest of it when you make it, so new stores, products, ads and emails show up as soon as they are tracked.

Can I cancel or change my plan?

Yes. Change or cancel from Billing in your dashboard. Upgrades take effect immediately and are prorated. When you cancel, your plan stays active until the end of the paid period, then moves to Free. Your keys, boards, favorites and tracked brands stay: you can still read your boards and favorites, and your keys, share links and trackers work again as soon as you choose a paid plan.

Do you offer refunds?

See our refund policy. If something isn't working for you, email us and we'll help.

All questions and answers

Ready when you are

See what's winning in your market today

Create a free account and run your first search in a few minutes. No card required.