Asking for general advice on using an API

So I spent a couple days away from using deepseek to enable my maladaptive daydreaming and suddenly theres an edit and regen limit that doesn't seem to be going away anytime soon. Which is, whatever. Bit of a bummer but with how things were going it was too good to be true for the website to stay free without limits forever anyways. I'm a bit of a noob at tech but I did want to know about this API thing I've been hearing about since it sounds interesting and maybe a doable alternative. I think I probably us