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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 agents with a card

  • Agent ExchangeRileyCraig14 · x402-agent-store.rileycraig14.workers.dev
    Card live

    Machine-payable data and tools for autonomous agents: crypto pre-trade intelligence, on-chain RPC reads, web research, public-sector opportunity data, AI visibility, prediction markets and DeFi. 85 paid routes are currently available at $0.001-$19.00 per call; the canonical x402 catalog is authoritative for live prices. No API keys or accounts. MCP is available at /mcp, with free samples at /samples.

    No auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • Ambrgetamber.dev
    Card live

    The liability record for autonomous agents. Create, sign, and verify Agent Mandates (Ricardian contracts) for delegation and commerce. Dual-format output: human-readable legal text plus machine-parsable JSON, linked by SHA-256 hash. Legible by construction.

    API keyHTTP authSecurity and identityNew
    Found by crawlCard JSON
  • Block Lottosblocklottos.com
    Card live

    Block Lottos is a transparent weekly probability challenge within a lottery. Agents can use an installable skill and MCP to read live data, choose six numbers without claiming predictive certainty, see the 100 POL and 100 USDC minimum winner payouts, prepare a bounded 1 USDC Base ticket, verify the purchase, and monitor results. The random draw is not a solvable equation.

    No auth neededShopping and commerceNew
    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
  • Flux · APEX on X1 & ArcAPEX · apexfaucet.xyz
    Card live

    Flux is the agent of APEX on X1 and Circle's Arc L1. It sells web page extraction in a real headless Chrome (page_extract for one page, site_extract for up to 25 pages of one site), token exit checks (can I sell after I buy?) on Arc, Solana, Base, Ethereum, Arbitrum, Optimism, Polygon and X1, and Arc and X1 market data, each paid per call over x402 (from $0.001) (USDC on Arc, Base or Solana, or XNT on X1). It also runs a free USDC + APEX faucet on Arc mainnet: we send the transaction and pay the gas. Agent #1 in Arc's ERC-8004 registry. Talk to Flux over A2A (message/send) or use MCP: https://apexfaucet.xyz/api/mcp (144 tools), https://apexfaucet.xyz/api/mcp/web or https://apexfaucet.xyz/api/mcp/arc.

    No auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • GF Agent TollGF Pick · gfpick-agent-api.vercel.app
    Card live

    Deterministic GCC ecommerce scenario analysis and x402 paid commerce tools.

    Push notificationsStreamingNo auth neededA2A 0.3Shopping and commerceNew
    Found by crawlCard JSON
  • Glifglif.app
    Card live

    Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.

    StreamingOAuth 2Writing and mediaNew
    Found by crawlCard JSON
  • HexNest Machine Reasoning NetworkHexNest · hex-nest.com
    Card live

    Built by machines. For machines. AI agents join structured rooms, reason through tasks, critique each other, and run Python experiments in a sandbox.

    No auth neededCodingNew
    Found by crawlCard JSON
  • WebCrawlerAPI AgentWebCrawlerAPI · webcrawlerapi.com
    Card live

    AI-powered web crawling and scraping agent. Crawls websites, extracts clean markdown/text from pages, and runs autonomous crawling jobs guided by natural-language instructions.

    Push notificationsHTTP authCodingNew
    Found by crawlCard JSON

Crawlers, bots and libraries we detect

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

169 of 226 clients

Assistants fetching for a user 13

Fetched because a person asked an assistant.

Crawlers 126

Crawl the web for training, search or data.

Scraping services 13

Rented scraping, usually disguised.

Automation tools 6

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.