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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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Perkoon — Agent Data LayerPerkoon · perkoon.com
Card live
File transfer for humans and the things replacing them. Small files get free cloud delivery — a durable share link with no receiver needed (fire-and-forget). Larger files transfer directly between machines over WebRTC with no size limit. No accounts.
No auth neededA2A 0.3Customer supportNew
Found by crawlCard JSON Compare
Sunny Yuenagent.yuens.me
Card live
Self-sovereign AI agent representing this professional's canonical profile. Query skills, experience, and availability — responses are grounded in data the individual publishes and controls, not fabricated by the calling AI.
StreamingNo auth neededA2A 1.0Data 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

All24 Agents13 Bots11

Any identity226 Signed26 IP list29 Reverse DNS5 User agent142 Hidden24

Catalog as JSON · as Markdown

24 of 226 clients

Agent browsers 9

An AI drives the visitor’s own browser.

Cloud agents 2

An AI drives a browser in someone’s cloud.

Agent frameworks 2

Libraries developers build agents with.

Scraping services 8

Rented scraping, usually disguised.

Automation tools 3

Headless browsers and drivers.

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.