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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

4 agents with a card

  • 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
  • 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

Crawlers, bots and libraries we detect

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

26 of 226 clients

Cloud agents 15

An AI drives a browser in someone’s cloud.

Agent frameworks 2

Libraries developers build agents with.

Assistants fetching for a user 2

Fetched because a person asked an assistant.

Crawlers 6

Crawl the web for training, search or data.

Scraping services 1

Rented scraping, usually disguised.

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.