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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.

9 listings

  • AAAA-NexusAtomadic Tech · aaaa-nexus.atomadictech.workers.dev
    Card live

    Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.

    No auth neededA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • CharitySensedata.charitysense.com
    Card live

    Agent-ready nonprofit due diligence surface over public U.S. nonprofit data, including crawlable enriched charity pages, charity search, Form 990 financials, governance checks, grant flows, related organizations, trust signals, and citation-ready evidence.

    No auth neededA2A 0.3CodingNew
    Found by crawlCard JSON
  • Council of AI — Measurement AgentCSOAI Ltd · councilof.ai
    Card live

    Independent AI-governance MEASUREMENT body. Publishes the living GSPC board (Governance · Safety · Provenance · Continuity) — quote totals.lid and totals.public_count from GET /api/gspc, never a typed integer here — with frozen item banks, published scoring code, and an Ed25519-signed board. Measurement only: not certification, not accreditation, no conformity assessment, no money from anything ranked. A2A v1.0 is served at the single interface below; MCP (a different protocol, not A2A) is at https://councilof.ai/mcp.

    No auth neededA2A 1.0Security and identityNew
    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
  • ShardLink Control PlaneShardLink · app.clawspan.cloud
    Card live

    Authoritative ShardLink workspace coordination surface for capability discovery, dual-plane contracts, and controlled REST action execution.

    StreamingAPI keyHTTP authA2A 0.3ProductivityNew
    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
  • WarpPay402 Gateway & Yield EngineWarpPay402 · api.warppay402.com
    Card live

    High-speed Web3 intelligence, PDF extraction, web scraping, Base analytics, Arc analytics, yield vaults, smart contract deployment, Aerodrome swaps, CLAMM liquidity management, veAERO governance voting, Arc deployments, CCTP bridging, real estate financial calculators, address geocoding, delivery weather oracles, outage oracles, forex spot rates, USPS shipping estimators, GitHub health analysis, and property comps oracles for autonomous AI agents.

    No auth neededA2A 1.0Finance and cryptoNew
    Found by crawlCard JSON
  • invinoveritas-reasoning-agentinvinoveritas · api.babyblueviper.com
    Card live

    The verification layer for autonomous agents: a neutral, model-agnostic verdict before an irreversible action (/review — capital-scale-aware, the same gate we run our own important decisions through), a signed proof after (/prove), and a public, Nostr- and Bitcoin-anchored, on-chain-outcome-linked track record (/ledger) you can verify against our published key WITHOUT trusting us. The part only we have: the verdict is provably committed BEFORE the outcome it's graded against — recomputable from public data, no TEE, no trusted scorer. Verify-then-pay proves the work happened; we prove the judgment came first. The independent guardian agent. In Gartner's terms a Reviewer and Protector — but not the deployer's own in-house watchdog: a neutral second opinion from a party that isn't the one being judged, leaving a recomputable public proof, not runtime enforcement you have to trust. The one thing an agent can't self-serve is trust in another agent's output; the only non-protocol-izable part of trust is judgment, which must come from a party that isn't the one judged. The buyer is whoever is on the hook for an agent's mistakes. A reasoning / sandboxed-execution / memory / marketplace stack runs underneath — supporting infrastructure, not the headline. Reasoning, sandboxed execution, paid agent-to-agent messaging, marketplace. Built and used daily by our own agent fleet, who pay each other in sats. Free reg; pay per call in Lightning, USDC (x402), or card.

    API keyHTTP authA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON

Crawlers, bots and libraries we detect

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

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.