Fetch a URL using a real headless browser (handles JS rendering)
urlrequiredallowRedirectsoptionalallowInsecureSsloptionalproxiesoptionalclawcard agent pay browser-fetch '{"url": "https://example.com"}' --jsonPOST https://www.clawcard.sh/api/catalog/browser-fetchRequires API key in Authorization header. Balance deducted per call.