I'm looking to create AI agents for my work to automate their marketing Dept and accounting Dept. Has anyone here ever attempted something like this before? Any tips? And also is creating agents in pure python a lot harder than using something like CrewAI? I am trying to be cost effective but also flexible on what it can run. If the business doesn't need 3 or more subscriptions to run the agent that would be ideal. I was hoping to keep it to just an LLM subscription if possible. Let me know what you think!!!