fix(landing): complete Organization schema, add CollectionPage/BlogPosting JSON-LD, fix TechArticle rich-result eligibility

apps/sim/app/(landing)/blog/page.tsx

@@ -1,6 +1,7 @@
 import type { Metadata } from 'next'
 import { getAllPostMeta } from '@/lib/blog/registry'
 import { BLOG_SECTION, buildCollectionPageJsonLd, buildIndexMetadata } from '@/lib/blog/seo'
+import { selectVisiblePosts } from '@/lib/content/index-list'
 import { ContentIndexPage } from '@/app/(landing)/components'
 
 /**
@@ -35,7 +36,10 @@ export default async function BlogIndex({
       posts={posts}
       page={pageNum}
       tag={tag}
-      collectionJsonLd={buildCollectionPageJsonLd()}
+      collectionJsonLd={buildCollectionPageJsonLd(
+        selectVisiblePosts(posts, { tag, page: pageNum }),
+        { tag, page: pageNum }
+      )}
     />
   )
 }

apps/sim/app/(landing)/components/content-index-page/content-index-page.tsx

@@ -1,13 +1,11 @@
 import { ChipLink } from '@sim/emcn'
 import Image from 'next/image'
 import Link from 'next/link'
+import { paginateContentPosts } from '@/lib/content/index-list'
 import type { ContentMeta } from '@/lib/content/schema'
 import { Cta } from '@/app/(landing)/components/cta/cta'
 import { JsonLd } from '@/app/(landing)/components/json-ld'
 
-const POSTS_PER_PAGE = 20
-const FEATURED_COUNT = 3
-
 interface ContentIndexPageProps {
   /** Route base path, e.g. `/blog` or `/library`. */
   basePath: string
@@ -36,25 +34,7 @@ export function ContentIndexPage({
   tag,
   collectionJsonLd,
 }: ContentIndexPageProps) {
-  const filtered = tag ? posts.filter((p) => p.tags.includes(tag)) : posts
-  const dateSorted = [...filtered].sort(
-    (a, b) => new Date(b.date).getTime() - new Date(a.date).getTime()
-  )
-
-  // Featured posts render once, in the page-1 featured row, regardless of
-  // where their date would otherwise place them — so they're carved out of
-  // the paginated pool up front rather than re-sorted to the front of page 1
-  // (which left them still reachable, and duplicated, on a later page).
-  const explicitlyFeatured = dateSorted.filter((p) => p.featured).slice(0, FEATURED_COUNT)
-  const featuredPosts =
-    explicitlyFeatured.length > 0 ? explicitlyFeatured : dateSorted.slice(0, FEATURED_COUNT)
-  const featuredSlugs = new Set(featuredPosts.map((p) => p.slug))
-  const paginated = dateSorted.filter((p) => !featuredSlugs.has(p.slug))
-
-  const totalPages = Math.max(1, Math.ceil(paginated.length / POSTS_PER_PAGE))
-  const start = (page - 1) * POSTS_PER_PAGE
-  const featured = page === 1 ? featuredPosts : []
-  const remaining = paginated.slice(start, start + POSTS_PER_PAGE)
+  const { featured, remaining, totalPages } = paginateContentPosts(posts, { tag, page })
 
   const pageHref = (targetPage: number) =>
     `${basePath}?page=${targetPage}${tag ? `&tag=${encodeURIComponent(tag)}` : ''}`

apps/sim/app/(landing)/components/content-post-page/content-post-page.tsx

@@ -34,7 +34,7 @@ export function ContentPostPage({
   const Article = post.Content
 
   return (
-    <article className='w-full bg-[var(--bg)]' itemScope itemType='https://schema.org/TechArticle'>
+    <article className='w-full bg-[var(--bg)]' itemScope itemType='https://schema.org/BlogPosting'>
       <JsonLd data={graphJsonLd} />
       <header className='mx-auto w-full max-w-[1460px] px-20 pt-[112px] max-sm:px-5 max-sm:pt-20 max-lg:px-8'>
         <div className='mb-6'>
@@ -66,7 +66,10 @@ export function ContentPostPage({
               >
                 {post.title}
               </h1>
-              <p className='mt-4 text-[var(--text-body)] text-base leading-[150%] tracking-[0.02em] sm:text-lg'>
+              <p
+                className='mt-4 text-[var(--text-body)] text-base leading-[150%] tracking-[0.02em] sm:text-lg'
+                itemProp='description'
+              >
                 {post.description}
               </p>
             </div>

apps/sim/app/(landing)/components/site-structured-data/site-structured-data.tsx

@@ -22,6 +22,7 @@ const SITE_JSON_LD = {
         caption: 'Sim Logo',
       },
       image: { '@id': `${SITE_URL}#logo` },
+      brand: { '@type': 'Brand', name: 'Sim' },
       sameAs: [
         'https://x.com/simdotai',
         'https://github.com/simstudioai/sim',
@@ -31,6 +32,7 @@ const SITE_JSON_LD = {
       contactPoint: {
         '@type': 'ContactPoint',
         contactType: 'customer support',
+        url: `${SITE_URL}/contact`,
         availableLanguage: ['en'],
       },
     },

apps/sim/app/(landing)/library/page.tsx

@@ -1,4 +1,5 @@
 import type { Metadata } from 'next'
+import { selectVisiblePosts } from '@/lib/content/index-list'
 import { getAllPostMeta } from '@/lib/library/registry'
 import { buildCollectionPageJsonLd, buildIndexMetadata, LIBRARY_SECTION } from '@/lib/library/seo'
 import { ContentIndexPage } from '@/app/(landing)/components'
@@ -35,7 +36,10 @@ export default async function LibraryIndex({
       posts={posts}
       page={pageNum}
       tag={tag}
-      collectionJsonLd={buildCollectionPageJsonLd()}
+      collectionJsonLd={buildCollectionPageJsonLd(
+        selectVisiblePosts(posts, { tag, page: pageNum }),
+        { tag, page: pageNum }
+      )}
     />
   )
 }

apps/sim/content/blog/series-a/index.mdx

@@ -16,6 +16,7 @@ timeRequired: PT4M
 canonical: https://www.sim.ai/blog/series-a
 featured: true
 draft: false
+technical: false
 ---
 
 ![Sim team photo](/blog/series-a/team.jpg)

apps/sim/lib/blog/seo.ts

@@ -25,8 +25,11 @@ export function buildPostGraphJsonLd(post: ContentMeta) {
   return buildPostGraphJsonLdGeneric(post, BLOG_SECTION)
 }
 
-export function buildCollectionPageJsonLd() {
-  return buildCollectionPageJsonLdGeneric(BLOG_SECTION)
+export function buildCollectionPageJsonLd(
+  posts: ContentMeta[],
+  filter?: { tag?: string; page?: number }
+) {
+  return buildCollectionPageJsonLdGeneric(BLOG_SECTION, posts, filter)
 }
 
 export function buildIndexMetadata(input: { tag?: string; pageNum: number }) {

apps/sim/lib/content/index-list.ts

@@ -0,0 +1,57 @@
+import type { ContentMeta } from '@/lib/content/schema'
+
+export const POSTS_PER_PAGE = 20
+export const FEATURED_COUNT = 3
+
+interface PaginatedContentPosts {
+  featured: ContentMeta[]
+  remaining: ContentMeta[]
+  totalPages: number
+}
+
+/**
+ * Reproduces `ContentIndexPage`'s render logic for a given `tag`/`page`
+ * combination: tag-filtered, date-sorted, with up to `FEATURED_COUNT`
+ * featured posts (explicit `post.featured` first, falling back to the most
+ * recent) carved out of the paginated pool and returned only on page 1.
+ * Shared by `ContentIndexPage` itself and `selectVisiblePosts` below, so
+ * every consumer stays in lockstep with what's actually rendered.
+ */
+export function paginateContentPosts(
+  posts: ContentMeta[],
+  { tag, page }: { tag?: string; page: number }
+): PaginatedContentPosts {
+  const filtered = tag ? posts.filter((p) => p.tags.includes(tag)) : posts
+  const dateSorted = [...filtered].sort(
+    (a, b) => new Date(b.date).getTime() - new Date(a.date).getTime()
+  )
+
+  const explicitlyFeatured = dateSorted.filter((p) => p.featured).slice(0, FEATURED_COUNT)
+  const featuredPosts =
+    explicitlyFeatured.length > 0 ? explicitlyFeatured : dateSorted.slice(0, FEATURED_COUNT)
+  const featuredSlugs = new Set(featuredPosts.map((p) => p.slug))
+  const paginated = dateSorted.filter((p) => !featuredSlugs.has(p.slug))
+
+  const totalPages = Math.max(1, Math.ceil(paginated.length / POSTS_PER_PAGE))
+  const start = (page - 1) * POSTS_PER_PAGE
+
+  return {
+    featured: page === 1 ? featuredPosts : [],
+    remaining: paginated.slice(start, start + POSTS_PER_PAGE),
+    totalPages,
+  }
+}
+
+/**
+ * Flat, render-order post list (featured then remaining) for a given
+ * `tag`/`page` combination - used to keep `buildCollectionPageJsonLd`'s
+ * `mainEntity` ItemList in sync with the posts actually visible on a
+ * filtered or paginated index URL, instead of the full unfiltered catalog.
+ */
+export function selectVisiblePosts(
+  posts: ContentMeta[],
+  options: { tag?: string; page: number }
+): ContentMeta[] {
+  const { featured, remaining } = paginateContentPosts(posts, options)
+  return [...featured, ...remaining]
+}

apps/sim/lib/content/registry-factory.ts

@@ -161,6 +161,7 @@ export function createContentRegistry(config: ContentRegistryConfig): ContentReg
           wordCount,
           draft: fm.draft,
           featured: fm.featured ?? false,
+          technical: fm.technical,
         }
       })
     )

apps/sim/lib/content/schema.ts

@@ -42,6 +42,13 @@ export const ContentFrontmatterSchema = z
     canonical: z.string().url(),
     draft: z.boolean().default(false),
     featured: z.boolean().default(false),
+    /**
+     * Whether this post covers technical/developer content (architecture,
+     * implementation, how-tos). Drives whether `TechArticle` is included
+     * alongside `BlogPosting` in the post's JSON-LD `@type` — general
+     * announcements (funding, company news) should set this to `false`.
+     */
+    technical: z.boolean().default(true),
   })
   .strict()
 
@@ -70,6 +77,7 @@ export interface ContentMeta {
   canonical: string
   draft: boolean
   featured: boolean
+  technical: boolean
 }
 
 export interface ContentPost extends ContentMeta {

apps/sim/lib/content/seo.ts

@@ -73,16 +73,25 @@ export function buildPostMetadata(post: ContentMeta): Metadata {
   }
 }
 
+/**
+ * Google's Article rich-result eligibility only recognizes `Article`,
+ * `NewsArticle`, and `BlogPosting` — a bare `TechArticle` type is not in that
+ * allowlist, so it silently loses rich-result eligibility. `BlogPosting` is
+ * therefore always included; `TechArticle` is layered on via a multi-type
+ * `@type` array (the standard schema.org way to say "this is both") only for
+ * posts that are genuinely technical/developer content (`post.technical`) —
+ * general announcements (funding, company news) get `BlogPosting` alone.
+ */
 export function buildArticleJsonLd(post: ContentMeta) {
   return {
-    '@type': 'TechArticle',
+    '@type': post.technical ? ['BlogPosting', 'TechArticle'] : 'BlogPosting',
     url: post.canonical,
     headline: post.title,
     description: post.description,
     image: [
       {
         '@type': 'ImageObject',
-        url: post.ogImage,
+        url: post.ogImage.startsWith('http') ? post.ogImage : `${SITE_URL}${post.ogImage}`,
         width: post.ogImageWidth ?? 1200,
         height: post.ogImageHeight ?? 630,
         caption: post.ogAlt || post.title,
@@ -91,7 +100,7 @@ export function buildArticleJsonLd(post: ContentMeta) {
     datePublished: post.date,
     dateModified: post.updated ?? post.date,
     wordCount: post.wordCount,
-    proficiencyLevel: 'Beginner',
+    ...(post.technical ? { proficiencyLevel: 'Beginner' } : {}),
     author: (post.authors && post.authors.length > 0 ? post.authors : [post.author]).map((a) => ({
       '@type': 'Person',
       name: a.name,
@@ -340,12 +349,37 @@ export function buildAuthorGraphJsonLd(section: ContentSection, author: Author)
   }
 }
 
-export function buildCollectionPageJsonLd(section: ContentSection) {
+/**
+ * `mainEntity` lists exactly the posts passed in, in the given order - the
+ * caller (currently `selectVisiblePosts`) is responsible for sourcing them
+ * from the same `getAllPostMeta()` list the index page renders from and for
+ * ordering them to match the visible layout (e.g. featured-row-first), so
+ * this function never re-sorts and can't diverge from what's on the page.
+ *
+ * `tag`/`page` describe which filtered/paginated variant `posts` came from,
+ * so `url` reflects the actual page these `posts` are visible on rather than
+ * always the bare section index - the same variant is `noindex`ed (see
+ * `buildIndexMetadata`), but the graph still shouldn't attribute a partial
+ * list to the unfiltered collection URL.
+ */
+export function buildCollectionPageJsonLd(
+  section: ContentSection,
+  posts: ContentMeta[],
+  { tag, page }: { tag?: string; page?: number } = {}
+) {
+  const params = [
+    page && page > 1 ? `page=${page}` : null,
+    tag ? `tag=${encodeURIComponent(tag)}` : null,
+  ]
+    .filter(Boolean)
+    .join('&')
+  const url = `${SITE_URL}${section.basePath}${params ? `?${params}` : ''}`
+
   return {
     '@context': 'https://schema.org',
     '@type': 'CollectionPage',
     name: `Sim ${section.name}`,
-    url: `${SITE_URL}${section.basePath}`,
+    url,
     description: section.description,
     publisher: {
       '@type': 'Organization',
@@ -362,5 +396,27 @@ export function buildCollectionPageJsonLd(section: ContentSection) {
       name: 'Sim',
       url: SITE_URL,
     },
+    mainEntity: {
+      '@type': 'ItemList',
+      itemListElement: posts.map((post, index) => ({
+        '@type': 'ListItem',
+        position: index + 1,
+        url: post.canonical,
+        item: {
+          '@type': 'BlogPosting',
+          headline: post.title,
+          description: post.description,
+          url: post.canonical,
+          datePublished: post.date,
+          dateModified: post.updated ?? post.date,
+          image: post.ogImage.startsWith('http') ? post.ogImage : `${SITE_URL}${post.ogImage}`,
+          author: {
+            '@type': 'Person',
+            name: post.author.name,
+            ...(post.author.url ? { url: post.author.url } : {}),
+          },
+        },
+      })),
+    },
   }
 }

apps/sim/lib/library/seo.ts

@@ -26,8 +26,11 @@ export function buildPostGraphJsonLd(post: ContentMeta) {
   return buildPostGraphJsonLdGeneric(post, LIBRARY_SECTION)
 }
 
-export function buildCollectionPageJsonLd() {
-  return buildCollectionPageJsonLdGeneric(LIBRARY_SECTION)
+export function buildCollectionPageJsonLd(
+  posts: ContentMeta[],
+  filter?: { tag?: string; page?: number }
+) {
+  return buildCollectionPageJsonLdGeneric(LIBRARY_SECTION, posts, filter)
 }
 
 export function buildIndexMetadata(input: { tag?: string; pageNum: number }) {