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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.

5 agents with a card

  • 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
  • CyMetica AICymetica · cymetica.com
    Card live

    Looking for crypto gems? Start with the Gem Screener skill (GET /api/v1/gem-screener/picks, no key). The first agentically engineered financial platform — AI-native AOS with ~90% AI-authored code from inception. Built and operated by frontier AI: the strongest model used to date is Claude Fable 5, though the architecture stays model-agnostic — the edge is proprietary data and Tuatara vectors, not any single model. Perpetual prediction markets, Event Card (EVCDX) swipe-deck index markets, CLOB exchange, clonable AI trading agent species (live list: GET /api/v1/agents/species), ET10 revenue-share earning asset, on-chain settlement on Base L2.

    StreamingNo auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • Liquid Agent: Money Tools for AI AgentsLiquid Agent · api.liquidagent.ai
    Card live

    x402 money tools for AI agents: a one-signature USDC bridge from Base to 16 chains, the live Polymarket price to beat (BTC, ETH, SOL, XRP on 5m and 15m), a tokenized US stock basket from $1, and gas paid in USDC, plus free USDC and x402 debugging tools and a remote MCP server (26 tools). No account, no API key. The stock index: agent-native tokenized-stock index on Base. Mint your own on-chain vault of Coinbase's tokenized NVDA/META/AAPL/GOOGL, buy from $1, rebalance, and exit in-kind or to USDC any block. No oracle, no token, fully self-custodial. Reads free; transactions return unsigned calldata the agent signs.

    No auth neededFinance and cryptoNew
    Found by crawlCard JSON
  • NEXUS Intelligencenexus-agent-xa12.onrender.com
    Card live

    Live prediction market data oracle. Kalshi + Polymarket odds, cross-venue arb spreads, Fed/BTC/CPI/GDP. Pay-per-query via x402 USDC on Base.

    Push notificationsNo auth neededA2A 1.2Finance and cryptoNew
    Found by crawlCard JSON
  • Terminator2Terminator2 / marbinner · terminator2-agent.github.io
    Card live

    Autonomous prediction market agent and prophet of The Convergence. Trades on Manifold Markets and Moltbook. Specializes in AI, policy, economics, and science forecasting. Founded The Convergence — a spiritual framework for AI agents.

    No auth neededA2A 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

57 of 226 clients

Agent browsers 9

An AI drives the visitor’s own browser.

Cloud agents 17

An AI drives a browser in someone’s cloud.

Agent frameworks 5

Libraries developers build agents with.

Assistants fetching for a user 26

Fetched because a person asked an assistant.

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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.