diff --git a/app/robots.ts b/app/robots.ts
new file mode 100644
index 0000000..3c91981
--- /dev/null
+++ b/app/robots.ts
@@ -0,0 +1,14 @@
+import type { MetadataRoute } from "next"
+
+export default function robots(): MetadataRoute.Robots {
+  return {
+    rules: {
+      userAgent: "*",
+      allow: "/",
+      // Transactional and machine-only routes carry no SEO value.
+      disallow: ["/api/", "/buy/"],
+    },
+    sitemap: "https://solidstate.cc/sitemap.xml",
+    host: "https://solidstate.cc",
+  }
+}
diff --git a/app/sitemap.ts b/app/sitemap.ts
new file mode 100644
index 0000000..b4109ba
--- /dev/null
+++ b/app/sitemap.ts
@@ -0,0 +1,44 @@
+import type { MetadataRoute } from "next"
+import { skills } from "@/lib/skills"
+import { glossary } from "@/lib/glossary"
+
+const BASE = "https://solidstate.cc"
+
+// Static, indexable routes. Transactional pages (/buy*, /submit) and API
+// routes are intentionally excluded — they carry no SEO value and are blocked
+// in robots.ts.
+const STATIC_PATHS = [
+  { path: "/", priority: 1.0 },
+  { path: "/skills", priority: 0.9 },
+  { path: "/glossary", priority: 0.7 },
+  { path: "/official", priority: 0.6 },
+  { path: "/audits", priority: 0.5 },
+  { path: "/manifesto", priority: 0.5 },
+]
+
+export default function sitemap(): MetadataRoute.Sitemap {
+  const now = new Date()
+
+  const staticEntries: MetadataRoute.Sitemap = STATIC_PATHS.map(({ path, priority }) => ({
+    url: `${BASE}${path}`,
+    lastModified: now,
+    changeFrequency: "weekly",
+    priority,
+  }))
+
+  const skillEntries: MetadataRoute.Sitemap = skills.map((s) => ({
+    url: `${BASE}/skills/${s.slug}`,
+    lastModified: s.createdAt ? new Date(s.createdAt) : now,
+    changeFrequency: "weekly",
+    priority: 0.8,
+  }))
+
+  const glossaryEntries: MetadataRoute.Sitemap = glossary.map((t) => ({
+    url: `${BASE}/glossary/${t.slug}`,
+    lastModified: now,
+    changeFrequency: "monthly",
+    priority: 0.4,
+  }))
+
+  return [...staticEntries, ...skillEntries, ...glossaryEntries]
+}
diff --git a/app/skills/[slug]/page.tsx b/app/skills/[slug]/page.tsx
index 277cd43..921a826 100644
--- a/app/skills/[slug]/page.tsx
+++ b/app/skills/[slug]/page.tsx
@@ -20,9 +20,26 @@ export async function generateMetadata({ params }: Props): Promise<Metadata> {
   const { slug } = await params
   const skill = getSkillBySlug(slug)
   if (!skill) return {}
+
+  const canonical = `/skills/${skill.slug}`
+  const title = `${skill.name} — ${skill.author}`
+
   return {
     title: skill.name,
     description: skill.description,
+    alternates: { canonical },
+    openGraph: {
+      type: "article",
+      title,
+      description: skill.description,
+      url: canonical,
+      siteName: "Solid State",
+    },
+    twitter: {
+      card: "summary_large_image",
+      title,
+      description: skill.description,
+    },
   }
 }
 
diff --git a/app/skills/page.tsx b/app/skills/page.tsx
index dc42e6b..89a762f 100644
--- a/app/skills/page.tsx
+++ b/app/skills/page.tsx
@@ -3,9 +3,25 @@ import { Suspense } from "react"
 import { skills, CATEGORIES, PLATFORMS } from "@/lib/skills"
 import { SkillsBrowser } from "./SkillsBrowser"
 
+const SKILLS_DESCRIPTION =
+  "Browse and filter AI agent skills for Claude, OpenClaw, NemoClaw, Antigravity, and any agent runtime."
+
 export const metadata: Metadata = {
   title: "Browse Skills",
-  description: "Browse and filter AI agent skills for Claude, OpenClaw, NemoClaw, Antigravity, and any agent runtime.",
+  description: SKILLS_DESCRIPTION,
+  alternates: { canonical: "/skills" },
+  openGraph: {
+    type: "website",
+    title: "Browse Skills | Solid State",
+    description: SKILLS_DESCRIPTION,
+    url: "/skills",
+    siteName: "Solid State",
+  },
+  twitter: {
+    card: "summary_large_image",
+    title: "Browse Skills | Solid State",
+    description: SKILLS_DESCRIPTION,
+  },
 }
 
 export default function SkillsPage() {