Let's first look at the Agile Software Manifesto for guidance. We see four statements of values and a number of principles. None of them provide an ethical framework that helps us determine where to use agile methods. In fact, there are many types of work that we could ask an equivalent set of questions about:

Is it okay to use agile methods to assist research in bio-weapons?

Is it okay to use agile methods to build software systems for nuclear missiles?

Is it okay to use agile methods to run a hate campaign?

Is it okay to use agile methods to ... ?

The agile community lacks a statement of ethics equivalent to the Hippocratic Oath. Do we even need one? As coaches, should our Middle Way to Excellence be grounded in a strong moral sense or is the middle way adrift?

I feel like we need a moral grounding. I think that the basis of it should be the recognition of the Unity of Humanity. I believe that both justice and mercy are important. Trust and Truthfulness are part of the foundation as well.

Is there any way to state a professional creed for Agile coaches that we can all agree upon? Has anyone tried?

For what it's worth, the ICF has a code of ethics that might be a starting point.