Create a code of conduct for the site itself and a code of conduct or contributing guideline for contributing to the repo. Some examples and/or resources: * [HN has a set of guidelines](https://news.ycombinator.com/newsguidelines.html) * [Code of conduct template](https://github.com/probot/template/blob/master/CODE_OF_CONDUCT.md) * [Zauberware code of conduct](https://github.com/zauberware/code-of-conduct/blob/master/code_of_conduct.md) Some of these may only apply to code contributions while others may be more appropriate for the site itself.