You also need the striking content in your entire lead generation process, the content for email pitches and others, you must have an epic sales pitch to be successful also the content must be plagiarism free, another tool you can use for this purpose if you have someone else’s sales pitch ready, you can grab that copy and paraphrase the content, the tools make paraphrasing easy with just one click, go now to... Source: over 2 years ago

Depends on how your site is built (namecheap tells us nothing). There's API instructions for Square at https://developer.squareup.com/us/en. Source: almost 2 years ago

While the API itself is lacking some of what I'd consider "core" functionality (especially their new Bookings API), the squareup api is actually really nice to work with. Their documentation experience / code playground is incredible. it's super empathetic to the developer experience and they clearly place a ton of value in that. also, echoing everyone else here that stripe and twilio have some bangin' apis and docs. Source: almost 3 years ago