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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.

With a card: 331
Live now: 331
Skills: 1695
New this week: 331

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Slickrock.devwww.slickrock.dev
Card live
Agentic Systems Integrator. SlickRock.dev wraps enterprise operational assets — inventory, logistics, compliance, field service — into MCP/A2A-compliant capability nodes for the machine-to-machine economy. Mid-market enterprises ($10M–$100M) deploy in 30 days.
No auth neededA2A 0.3Finance and cryptoNew
Found by crawlCard JSON Compare
SursaTech AI AdvisorSursaTech · www.sursatech.com
Card live
SursaTech AI Advisor for an AI-native product engineering company in Kathmandu, Nepal, founded in 2017. Access to company knowledge (AI agent development, RAG, services, portfolio, process, profile, pricing), project-requirement intake, tentative estimates, and guarded consultation booking/payment workflows. Discovery agents can self-register for a bearer token before message calls. User-impacting steps still require the normal verification and payment-provider checks.
StreamingA2A 1.0Shopping and commerceNew
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.