I used to think that building complex Agent workflows would be a nightmare. Over the past two years, I have sporadically dived into this pit, and what happened? Suddenly, everything became clear. To put it simply, the core of an LLM Agent is so straightforward—grant the language model CLI command line access with complete freedom to schedule. It's truly amazing. Now I realize that as long as the LLM has enough command interfaces and execution permissions, there's basically nothing it can't do. Any large model can be endowed with such capabilities. This approach has completely changed my perception of AI applications.