I know that I am in agreement with Gotama.

我知道我同意乔达摩。

Now, if you are set on wanting to say " I am" and use " agree" in some way, you would have to say, " I am in agreement."

现在，如果你想说“我是” 并以某种方式使用“同意” ，你必须说“我同意” 。