Admittedly, I have not used AI, but that probably would be overwhelming compared to everything else you have listed so far. (In other words, the time spent learning it would overshadow the amount of gain you would have from it)

But I believe everything else you've mentioned is probably achievable, even if it's not all at once. I do not use those social media sites, so I don't have an immediate answer, but I can assist in thinking about the problem. (Programming is all about solving problems you don't know how to solve yet) It's also iterative, you don't have to have a complete solution to make your life a lot easier.

Let me ask some questions that may help:

• What are the most common kinds of formatting that you do?
• What are the various syntax tools that these social media sites use?
  • I honestly could not find an easy answer to this, which surprised me.
• Is there a formatting syntax that can already be converted to other kinds of syntax that you want to do?
  • My go to for that is Markdown, which is usually promising, but I do not know your needs.

It's always good to break your problem down into smaller problems first, and then solve each small problem, one at a time.

Let me know if that helps, and feel free to provide more details.

edit: grammar

If you're looking to "glue" a bunch of APIs together, a service like IFTTT may be something you want to look into.

APIs are generally not free, but they are pretty easy to use rest calls and very low cost for small volumes - I've paid up to$40/month for my bot but once it slowed down to ordinary levels of usage it's probably under $10/mo.

It's not clear to me whether you want to use AI to summarize or reword content based on individual audience and platform technical needs, or if you want to AI to design and format it for you and apply all the correct markup or formatting markers. I wouldn't do that with AI unless it's very simple because the AI won't be consistent with non-specific tasks.

If I were looking to do this, I'd create a sort of design template to drop text into, then I'd have the AI pull out and reword the text for each section - possibly this could be a single prompt or multiple depending on the template complexity. You'd probably want different prompts for each social due to different technical requirements and possibly different audiences.

I'd also put in a lot of work with the prompts to make sure you get it fairly good at outputting what you want without any back and forth to make adjustments. Only when I had templates and prompts I was really happy with would I try automating it, and even then I'd never pipe the output directly to social media without human review because even the best prompts will have bad output from time to time.

That all being said, I'm not sure what your workflow is and I might be overcomplicating it.