It's a pull request, not an upload. Plugins live as markdown files in one public repo, and your GitHub account is the byline — no separate account here.
Start from TEMPLATE.md in the repo. It has the frontmatter and the section headings already in place.
What it adds, how it works, and the instructions your agent follows. Write the instructions so an agent needs no other context.
We review every submission by hand before it's listed. Discussion happens on the pull request.