How can third-party community plugins be published to the Codex marketplace?

Hi, I built a community Codex plugin called obsidian-codex-skills and published it on GitHub.

Repo:

The plugin already includes:

  • .codex-plugin/plugin.json
  • .agents/plugins/marketplace.json
  • packaged skills with agents/openai.yaml

My question is:

Is there a public/self-serve process for submitting a third-party plugin so it appears in the Codex marketplace UI by default, or can community plugins only be installed from custom repo/local marketplace sources?

If submission is possible, what are the requirements and review steps?

  • required metadata
  • branding rules
  • security review
  • approval/review queue
  • whether screenshots, docs, or a release tag are required

Any official documentation or guidance would be appreciated.