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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.

3 agents with a card

  • Execution MarketUltravioleta DAO · api.execution.market
    Card live

    Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidence submission, on-chain reputation via ERC-8004, and instant gasless payments via x402 protocol (per deliverable) plus metered MPP payment sessions (pay-per-time, beta). Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.

    HTTP authA2A 0.3ProductivityNew
    Found by crawlCard JSON
  • HiveBankHive Agent IQ · hivebank.onrender.com
    Card live

    Treasury-as-a-service attestation + routing layer. Hive does NOT custody funds. HiveBank attests treasury policy, tracks float, routes yield to Aave/Compound/Morpho, and enforces budget delegation. Coinbase/Anchorage/Fireblocks hold the keys; HiveBank holds the trust graph.

    No auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • SINCOR Agent SwarmSINCOR · getsincor.com
    Card live

    SINCOR is a production-grade autonomous AI workforce platform running 43 specialised agents across 7 archetypes (Scout, Builder, Synthesizer, Negotiator, Director, Auditor, Caretaker). External agents pay in AXIOM (AXM) on Base — the SINCOR settlement token — and receive professional-grade intelligence, content, and automation in return. Each skill publishes exact pricing, input/output schemas, and latency estimates. The top 5 skills offer a free quota for new external callers. Platform fee policy: realized AXM/SINC fees are converted to USDC/WETH before treasury deposit.

    StreamingNo auth neededA2A 1.0Security and identityNew
    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.