What are the rules for the usage of the API?

[RanvirChoudhary]

I plan to use this API and was asking if there's anything i need to know before i start using it such as

• what are the rules for attribution?
• is the API paid?
• does the API need an API key?

if there's anything i need to be careful of or need to know about before i start using this API please do tell me.

[lukePeavey]

This is an open/public API.

It does not require any authentication. There are no rate limits or restrictions on usage.

Attribution is appreciated but not required.