What level of significance does a Best API Search Company’s Homepage design hold?

Design has an impact on the first impressions, therefore, users will often query whether the Whatsontech must focus on the excellence in UI. Amidst numerous UX discussions, there is an argument by most people that the simplicity, and usability, make developers play around with the features without getting frustrated. Such a bewildering design will kill the objective of the Homepage of any Best API Search Company since the users may simply want easy access to SDKs or search features. Clarity of menu, responsiveness of design and searchability assists. What do you consider to be the best features about the API search service found on the homepage that makes you trust it is a professional and credible service?