Based on our record, Wyre should be more popular than CoinMarketCap API. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Before you can use the CMC API, you need to sign up for a (free) developer account, to receive an API key. You can sign up at pro.coinmarketcap.com and - after verifying your account - you can retrieve your API key. Source: over 2 years ago
Age requirement is based on where you live. That said, you still have to find a service that allows non-KYC purchases. I know of UTORG and Wyre for this. Source: about 2 years ago
Http://sendwyre.com/ does something like what you're asking. No KYC is unrealistic. Source: about 2 years ago
I'm working on adding an onsite app like Indacoin.com or http://sendwyre.com that can directly onboard customers and swap into OPCT. This will also be handled directly via a swap module in our mobile app probably connected to the Uniswap API. And we need to see ETH level 2 or 2.0 to reduce fees as well, or look into another chain as a last resort. Source: about 3 years ago
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