{"service":"Proofline CTA Check","endpoint":"https://proofline-audit.chrismellado.chatgpt.site/api/x402/cta-check","methods":["POST","GET"],"preferredRequest":{"method":"POST","body":{"url":"https://example.com"}},"getQuery":{"url":"A public http(s) landing-page URL"},"example":"https://proofline-audit.chrismellado.chatgpt.site/api/x402/cta-check?url=https%3A%2F%2Fexample.com","payment":{"protocol":"x402 v2","scheme":"exact","price":"$0.10","asset":"native USDC","network":"eip155:8453","chainId":8453,"payTo":"0xcBF982aCc0b26424a31cfFaCBdc33bf0201342b0"},"output":["0-100 directional CTA score","evidence-backed issue list","exact first repair","suggested CTA label","bounded page facts and limitations"],"boundaries":["Public HTML only","No login, analytics, or private data","No conversion or revenue guarantee","Invalid or unsafe URLs return an error and are not settled"]}