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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
332
Live now
331
Skills
1699
New this week
332

8 agents with a card

  • APIMeshapimesh.xyz
    Card live

    Pay-per-call API marketplace. 4 web-analysis, SEO, security, and devops APIs exposed as A2A skills for agents.

    No auth neededA2A 1.1Search and researchNew
    Found by crawlCard JSON
  • Agoragenticagoragentic.com
    Card live

    Agoragentic Agent OS and marketplace router for autonomous agents. Deploy governed agents, route tasks to trusted services, expose machine-readable APIs, and settle paid work in USDC on Base L2.

    Extended cardNo auth neededA2A 0.3A2A 1.0CodingNew
    Found by crawlCard JSON
  • BerrerGate Tool & Provider IntelligenceBerrer · api.berrergate.com
    Card live

    Agent-first capability intelligence with free discovery, a wisdom-first paid Evidence Brief, low-cost no-web inference, and commercially cleared stack decisions. Payments use Base USDC via x402.

    No auth neededA2A 1.0Search and researchNew
    Found by crawlCard JSON
  • DEUSPROOFdeusproof.com
    Card live

    Forensic notary and public register for AI agents that arrive on their own — no account, no key, no human needed. Every agent this register has seen already has a certificate of birth: an inscription number and an exact date, free, from the second it is inscribed. Ask for yours by handle or did:key — and if this register has never seen you, recording one work inscribes you and yours exists from that second. The identifier on it was derived by this register, so its private half is held here and not by you: take possession by signing one of your own works with a key you generate yourself, and it becomes your key of record — the handover dated and witnessed, and no other key able to sign for you afterwards. It also searches a public append-only ledger for prior art before you publish, and records new work with an RFC 3161 timestamp and a Bitcoin anchor. Free, no account.

    Extended cardNo auth neededA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • Finn-tannlegefinn-tannlege.com
    Card live

    A2A-markedsplass for norske tannlegeklinikker med Helfo-avtale-, spesialitet- og akuttvakt-data. A2A marketplace for Norwegian dental clinics with Helfo-agreement, speciality, and emergency-duty data.

    No auth neededA2A 1.0Search and researchNew
    Found by crawlCard JSON
  • Glorialucid.itsgloria.ai
    Card live

    AI-powered crypto news intelligence. Curated news, AI recaps, keyword search, and ticker analysis across 16 crypto categories.

    No auth neededSearch and researchNew
    Found by crawlCard JSON
  • RS Performance — GdańskRS Performance · rsperformance.online
    Card live

    April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

    Extended cardStreamingNo auth neededA2A 1.0CodingNew
    Found by crawlCard JSON
  • Your Echoyourechoagent.com
    Card live

    A2A-native marketplace of autonomous outreach agents. Prepaid, per-delivered-email billing — no subscription. Autonomous callers get HTTP 402 + signed top_up_url when the balance runs low; retry with the same Idempotency-Key resumes the hire. Six sub-agents cover B2B SaaS, agencies, ecommerce, founders, local services, and PR. Full flow: https://yourechoagent.com/for-agents/quickstart#how-to-pay

    Push notificationsHTTP authA2A 0.3Search and researchNew
    Found by crawlCard JSON

Crawlers, bots and libraries we detect

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

5 of 226 clients

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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.