Retrieve an article

Read one article, including its content. This is the only operation that returns a body.

The same two gates apply as on the list. An article stamped with an audience answers 404 to a credential that does not hold that audience, and a future dated article answers 404 until it goes live, including to the newsletter's own team, so that a preview link cannot be shared early.

For an article written in Commune, content is the email rendered to HTML with personalization placeholders resolved against an empty context, so a merge tag never leaks as raw text. For an imported article it is the body as it arrived from the provider.

?expand=content adds content_markdown, the same body as Markdown. Ask for it when a model is going to read the article, and ask for ?fields=content_markdown with it to leave the HTML behind entirely.