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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.
- Card live
Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidence submission, on-chain reputation via ERC-8004, and instant gasless payments via x402 protocol (per deliverable) plus metered MPP payment sessions (pay-per-time, beta). Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.
HTTP authA2A 0.3ProductivityNewFound by crawlCard JSON - 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 cryptoNewFound by crawlCard JSON - 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 authCodingNewFound by crawlCard JSON
Crawlers, bots and libraries we detect
The catalog: 226 clients named by user agent, IP list or signature
24 of 226 clients
Agent browsers 9
An AI drives the visitor’s own browser.
Cloud agents 2
An AI drives a browser in someone’s cloud.
Agent frameworks 2
Libraries developers build agents with.
Scraping services 8
Rented scraping, usually disguised.
Automation tools 3
Headless browsers and drivers.
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.