I crawled the top 1,000,000 domains (indexed by @Cloudflare) to see who is publishing an A2A Agent Card. Goal: find a public, agent doing business on the open web. Guess what I found 👇
For each domain I probed the apex plus these hosts: www, agent, agents, ai, api, app, dev, docs I only used HTTPS. No auth. Followed redirects.
I checked multiple likely paths, not just JSON: /.well-known/agent-card.json /.well-known/agent.json /.well-known/agent.yml /.well-known/agent.yaml /.well-known/agent-descriptions
About 1M domains × 9 hosts × 5 paths = 45M candidate URLs from my humble little macbook pro over the last few days. I copy pasted each by hand... jk jk haha, making sure you are reading still.
The result. Zero confirmed Agent Cards at the tested locations. Not one domain-scoped A2A card spotted.
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