From @gr2m in https://github.com/actions/create-github-app-token/pull/54#discussion_r1344571256: > I think we should use dashes for our arguments, it seems to be the convention for `actions/*` actions, e.g. see https://github.com/actions/checkout/ Notably, changing the input names affects the translated environment variable names[^1]: - An input named `my_var` is translated to `INPUTS_MY_VAR`. - An input named `my-var` is translated to `INPUTS_MY-VAR`. So, we may want a plan for backwards-compatibility, or we may want to ship this in a major version bump. [^1]: cf. [“Metadata syntax for GitHub Actions > Example: Specifying inputs”](https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions#example-specifying-inputs)