Find and sort ad-supported publishers

About 170,000 sites with their ad manager, traffic size, DIDNA status and recent switches. Search by filters, by describing what you want, or by naming a site to find look-alikes.

Open the app Connect to Claude

Connect to Claude

Ask questions in plain English and get lists, profiles and download links back.

In Claude, open Settings → Connectors → Add custom connector.
Paste this address:
https://didna.brickstack.app/mcp
A page opens asking for the access code. Enter it and choose Connect.

Claude Code

claude mcp add --transport http didna-publishers https://didna.brickstack.app/mcp

Things to ask

Freestar sites in the top 100K that aren't DIDNA clients, as a CSV.
Find sites like hockeydb.com that run on Raptive or Freestar.
College football fan forums that aren't DIDNA clients yet.
Which sites dropped their ad manager last month?
Check overthecap.com's ads.txt right now.

Web app

Open the app and sign in once with the access code; it lasts 30 days.

What you can do

Filters: ad manager, traffic size, DIDNA client, switched or dropped manager, domain text.
Describe: type a sentence such as "independent hockey statistics sites".
Similar sites: open a site and find its look-alikes.
Live check: read a site's ads.txt as it is right now, and who each DIDNA line belongs to.
Download CSV: whatever is on screen, or any full table.
Shareable views: filters live in the address bar.

Connector tools

Claude picks these automatically; you don't need to name them.

Tool	What it does
`find_publishers`	Filter and sort the list, like the app's filters.
`find_sites`	Search by description, or by example sites for look-alikes. Matches are double-checked by default.
`publisher`	Everything stored about one site, including history and seller accounts.
`check_adstxt`	Fetch and summarise a site's live ads.txt.
`recent_changes`	Sites whose ad manager changed, newest first.
`audits`	Hand-audited sports sites with scores and draft outreach lines.
`download_link`	A CSV link for any list, search or table. Valid for one hour.
`query`	Read-only SQL for anything else. `describe_data` lists the tables.

The data

All of it comes from public files.

Field	Source	As of
Ad manager	Each manager's public sellers.json (Raptive, Mediavine, Freestar, Playwire, Publisher Desk, DIDNA), plus where a site's ads.txt redirects	Oct 6, 2026
Traffic size	Chrome popularity bucket from HTTP Archive (Top 1K … Top 1M)	Sep 2026 crawl
ads.txt lines, partners	HTTP Archive's monthly crawl of each site's ads.txt	Sep 2026 crawl
Switched / dropped	Change in ad manager between the Aug and Sep 2026 crawls	Sep 2026
Homepage text	Title, description and main heading from HTTP Archive, used for describe and look-alike search	Sep 2026 crawl
History	Monthly timelines for the audited sports sites; partner-level detail starts June 2024	Nov 2023 – Sep 2026

Worth knowing

Lists go stale. Managers don't always remove sites that leave, so a site can still show its old manager. Use the live check to confirm.
"DIDNA client" means DIDNA's sellers.json lists the site as a publisher. That includes some former clients.
A didna.io line in ads.txt usually means a reseller (such as Aniview or Adipolo) sells DIDNA demand there, not that the site is a client. The live check names whose account it is.
Traffic size is a bucket, not a visit count. "Top 50K" means the site is among the 50,000 most visited in Chrome.
Sites that block crawlers have no homepage text, so they can't be found by description or used as a look-alike example.

Downloads

File	Contents
publishers.csv	Every site with manager, size, DIDNA status and changes
seller_accounts.csv	Every entry in the managers' sellers.json files
changes.csv	Manager switches by month
audits.csv	The audited sports sites and outreach drafts
history.csv	Monthly timelines for the audited sites

Need the access code? Ask Kyle. Don't post it anywhere shared.