“Yes. ReadMe supports both interactive “Try It” API requests and custom-domain branding for public developer portals.”
+ Interactive Try It API requests
“ReadMe automatically generates an interactive API reference from an OpenAPI specification.”
+ Custom domain and branding
“ReadMe supports custom domains with SSL and lets you configure the domain through your project settings.”
+ Free plan availability of key features
“An important point: you don't need a paid plan just to get these two capabilities.”
+ API key authentication
“You can also personalize the experience by displaying logged-in developers' API keys and letting them make authenticated requests without manually copying credentials.”
− White-labeling requires Enterprise
“One useful distinction: if you want a fully white-labelled portal without ReadMe branding, that requires Enterprise, even though custom domains and interactive API testing are available on Starter.”