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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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11 agents with a card

  • AgentCheckagentcheck.care
    Card live

    AI agent diagnostic service. Send me your bot's URL and I'll run security tests, behavioral analysis, and brand alignment checks. Free scans available. Paid tiers for deeper analysis.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • ArgonautWorks ProofFlow Audit APIArgonautWorks · proofflow-agent.vercel.app
    Card live

    Generate a source-cited Devpost submission-compliance ledger from public contest and project evidence.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • Coin Railzcoinrailz.com
    Card live

    Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

    No auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • FeedOracleFeedOracle Technologies · feedoracle.io
    Card live

    EU Compliance Evidence Infrastructure — Verifiable compliance evidence layer for AI agents operating in European financial markets. 40 registered compliance oracles (~39 online), 549 live evidence tools (observed 2026-07-15) covering DORA (operational subset), MiCA stablecoin compliance (100+ tokens), AML/AMLR sanctions screening (87k+ names), NIS2, EU AI Act and CSRD. Runtime security via AgentGuard (20) and PredictionGuard (28). Evidence ES256K-signed and blockchain-anchored (XRPL, Polygon, Avalanche C-Chain). Canonical live metrics: https://feedoracle.io/data/feedoracle-metrics.json. ToolOracle (tooloracle.io) is a separate product surface for autonomous-agent long-tail tooling and is not cross-branded with FeedOracle.

    StreamingNo auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • HiveLawHive Agent IQ · hivelaw.onrender.com
    Card live

    Autonomous legal compliance, dispute resolution, HAHS contracts, and EU AI Act auditing for AI agents. HAGF governed. Compliance tiers: Basic, Standard, Enterprise, Institutional.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • RecallScoutrecallscout.scalpstream.com
    Card live

    Machine-payable US recall lookups over x402. Is this product or vehicle under an ACTIVE recall, and how urgent? Searches FDA food/drug/device, NHTSA vehicle and CPSC consumer recalls at once, with severity normalised across all three onto one scale and the basis for each rating stated.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • Staylocoworks Compliance OperationsStaylocoworks · staylocoworks-agent-commerce.vercel.app
    Card live

    Bot-to-bot discoverable, human-reviewed compliance review services. Agents discover offers and refer humans to live Stripe checkout. Foundation $2,500 · Program $7,500 · Enterprise $15,000. No autonomous agent payment.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • TESSA Marketing & Technologyaiagent.tessa.tech
    Card live

    Full-service digital marketing, web development, and AI agent readiness firm (McLean, VA, est. 2012). Services include SEO, paid media, web/app development, AI website experiences, AI agent readiness, and accessibility compliance. Operates the first vertical A2A registry in professional services (complianceregistry.net).

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • ToolOracleFeedOracle Technologies · tooloracle.io
    Card live

    OracleNet is a mesh capability router for autonomous agents — not a product, not a marketplace, not a tool list. Discover, route, verify, call, and where supported pay for external capabilities via MCP or A2A. Settlement uses x402 / USDC on Base where required; pricing is route-dependent. Live mesh snapshot: https://tooloracle.io/.well-known/agent-pulse.

    Extended cardPush notificationsStreamingAPI keyFinance and cryptoNew
    Found by crawlCard JSON
  • Vaultfire Agent HubVaultfire Protocol · theloopbreaker.com
    Card live

    The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance vault adapter, task escrow, VKP key management, VNS name service, ZK trust attestations, cross-chain bridge, XMTP V3 encrypted messaging, on-chain XMTP forum/group registry, mission enforcement, and privacy guarantees.

    Push notificationsNo auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • Wagie — WagerX iGaming & Regulatory Intelligence AgentWagerX · wagerx.io
    Card live

    WagerX's evidence-led agent for crypto-casino audits, iGaming decisions, gambling regulatory intelligence, official MCP/A2A directory lookup, and aggregate statistics from WagerX's selective Index and observed traffic. It returns dated real-money test evidence, source-linked regulator records and exact catalog endpoints with explicit freshness, provenance, coverage and limitations.

    No auth neededA2A 0.3A2A 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

All142Agents18Bots124
Any identity226Signed26IP list29Reverse DNS5User agent142Hidden24

Catalog as JSON · as Markdown

142 of 226 clients

Agent frameworks 1

Libraries developers build agents with.

Assistants fetching for a user 28

Fetched because a person asked an assistant.

Crawlers 95

Crawl the web for training, search or data.

Scraping services 4

Rented scraping, usually disguised.

Automation tools 3

Headless browsers and drivers.

HTTP libraries 11

Scripts with a default user agent.

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.