Wiring RSS

Cosmo ships with a stub RSS endpoint at src/pages/rss.xml.js. Until you wire it to a collection, the feed renders with zero items.

Wire to the blog collection

Replace the stub with a getCollection call that filters drafts and sorts by pubDate:

import rss from "@astrojs/rss";
import { getCollection } from "astro:content";

export async function GET(context) {
  const posts = (await getCollection("blog", ({ data }) => !data.draft)).sort(
    (a, b) => b.data.pubDate.valueOf() - a.data.pubDate.valueOf(),
  );

  return rss({
    title: "Your Site",
    description: "A new site built with Cosmo.",
    site: context.site,
    items: posts.map((post) => ({
      title: post.data.title,
      pubDate: post.data.pubDate,
      description: post.data.description,
      link: `/blog/${post.id}/`,
    })),
    customData: "<language>en-us</language>",
  });
}

Discoverability

Add an autodiscovery <link> in src/layouts/BaseLayout.astro:

<link rel="alternate" type="application/rss+xml" title="Your Site" href="/rss.xml" />

The feed lives at /rss.xml. The site field in astro.config.mjs must be set for absolute URLs to resolve correctly.