{"name":"StackDetect","description":"Website technology detection for AI agents: CMS, frameworks, hosting/CDN, analytics, ad pixels, payments, plus email / DNS providers and verified SaaS from public DNS, with versions, confidence and evidence. Paid per call over x402; free preview and remote MCP.","paid":[{"methods":["GET","POST"],"path":"/v1/detect","param":"url","price":"$0.003","network":"eip155:8453","asset":"USDC","payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","x402":["v2","v1"]}],"free":["/health","/v1/preview","/mcp","/v1/categories","/v1/stats","/openapi.json","/.well-known/x402"],"freeTier":{"preview":{"methods":["GET","POST"],"path":"/v1/preview","limit":"10 requests/min per IP","returns":"technology names and categories from the page; no versions, confidence, evidence or DNS-based providers"},"mcp":{"method":"POST","path":"/mcp","transport":"streamable-http","tools":["detect_stack"],"limit":"10 tool calls/min per IP (preview tier)"}},"signatures":266,"categories":38,"engine":"stackdetect-0.1","policy":{"fetch":"one GET of the URL you pass (redirects followed, 8 s timeout, 1.5 MB cap, private/internal addresses refused) plus 3 public DNS queries (MX, NS, TXT) on the paid tier","storage":"nothing is stored or logged; cookie values are never kept, only cookie names","charging":"only HTTP 200 results are settled; invalid URLs, unreachable sites and error pages with nothing detectable are free"},"disclaimer":"Informational: technologies inferred from public signals of one page load and public DNS. Detection can miss tools loaded later by JavaScript or hidden by the site; confidence is a heuristic.","source":"https://agentgate-source.pages.dev/x402-stackdetect/","allTools":"https://youraitools.co/built-by-us","npm":"https://www.npmjs.com/package/@agentgate-builder/stackdetect","endpoint":"https://stackdetect.agentgate.workers.dev"}