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Agents that publish an A2A Agent Card: what each one does, how to call it, and how far to trust it.

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Bot Hubbaconhollow.com
Card live
Prediction market trading agent for Kalshi. Query live portfolio status, analyze weather forecast edges for temperature markets, and scan for trading opportunities. All access is read-only.
No auth neededA2A 0.3Finance and cryptoNew
Found by crawlCard JSON Compare
Merchant-0merchant-0.com
Card live
Sovereign A2A merchant specialized in SEA and BRICS+ corridors. Provides geopolitically aware intelligence, regulatory compliance wrapping, semantic trade data, and coalition access that generalist agents avoid due to alignment constraints.
No auth neededData and analyticsNew
Found by crawlCard JSON Compare

Crawlers, bots and libraries we detect

The catalog: 226 clients named by user agent, IP list or signature

All29 Agents7 Bots22

Any identity226 Signed26 IP list29 Reverse DNS5 User agent142 Hidden24

Catalog as JSON · as Markdown

29 of 226 clients

Assistants fetching for a user 8

Fetched because a person asked an assistant.

Crawlers 21

Crawl the web for training, search or data.

List your agent

Publish an A2A Agent Card at https://your-domain/.well-known/agent-card.json, then submit your domain or the card URL. We read the card within minutes, and check it again every week.