diff --git a/bskyweb/cmd/bskyweb/render_test.go b/bskyweb/cmd/bskyweb/render_test.go
index 30b27a53d5..902476709f 100644
--- a/bskyweb/cmd/bskyweb/render_test.go
+++ b/bskyweb/cmd/bskyweb/render_test.go
@@ -43,6 +43,13 @@ func extractJSONLD(t *testing.T, html string) string {
 	return strings.TrimSpace(m[1])
 }
 
+func TestRenderBase_NoindexMeta(t *testing.T) {
+    html := renderTemplate(t, "base.html", pongo2.Context{"noindex": true, "nofollow": true})
+    if !strings.Contains(html, `<meta name="robots" content="noindex, nofollow">`) {
+        t.Errorf("expected combined noindex,nofollow meta; got:\n%s", html)
+    }
+}
+
 func TestRenderPost_EmitsJSONLD(t *testing.T) {
 	pv := makePostView("alice.bsky.social", "did:plc:alice", "abc123", "hello")
 	ld, err := buildPostJSONLD(pv, nil, "https://bsky.app/profile/alice.bsky.social/post/abc123", hideEmbedLabels, hideReplyLabels)
@@ -243,3 +250,50 @@ func TestRenderPost_VideoWithoutThumbnailEmitsOGVideo(t *testing.T) {
 		t.Errorf("og:video:type should emit even without imgThumbUrls; got:\n%s", html)
 	}
 }
+
+// Auth-required posts must emit noindex,nofollow so the stub page (no body
+// text, no comments) is not indexed.
+func TestRenderPost_AuthRequiredNoindex(t *testing.T) {
+	html := renderTemplate(t, "post.html", pongo2.Context{
+		"requiresAuth":  true,
+		"profileHandle": "alice.bsky.social",
+		"requestURI":    "https://bsky.app/profile/alice.bsky.social/post/abc123",
+		"canonicalURL":  "https://bsky.app/profile/alice.bsky.social/post/abc123",
+		"noindex":       true,
+		"nofollow":      true,
+	})
+	if !strings.Contains(html, `<meta name="robots" content="noindex, nofollow">`) {
+		t.Errorf("auth-required post should emit noindex,nofollow; got:\n%s", html)
+	}
+}
+
+// Auth-required profiles must emit noindex,nofollow.
+func TestRenderProfile_AuthRequiredNoindex(t *testing.T) {
+	pv := newProfileViewDetailed()
+	html := renderTemplate(t, "profile.html", pongo2.Context{
+		"profileView":  pv,
+		"requestURI":   "https://bsky.app/profile/alice.bsky.social",
+		"requiresAuth": true,
+		"noindex":      true,
+		"nofollow":     true,
+	})
+	if !strings.Contains(html, `<meta name="robots" content="noindex, nofollow">`) {
+		t.Errorf("auth-required profile should emit noindex,nofollow; got:\n%s", html)
+	}
+}
+
+// Public posts must NOT emit a robots meta tag. Guards against an accidental
+// flip of the noindex flag for indexable pages.
+func TestRenderPost_PublicNoNoindex(t *testing.T) {
+	pv := makePostView("alice.bsky.social", "did:plc:alice", "abc123", "hello")
+	ld, _ := buildPostJSONLD(pv, nil, "https://bsky.app/profile/alice.bsky.social/post/abc123", hideEmbedLabels, hideReplyLabels)
+	html := renderTemplate(t, "post.html", pongo2.Context{
+		"postView":     pv,
+		"requestURI":   "https://bsky.app/profile/alice.bsky.social/post/abc123",
+		"canonicalURL": "https://bsky.app/profile/alice.bsky.social/post/abc123",
+		"postJSONLD":   ld,
+	})
+	if strings.Contains(html, `<meta name="robots"`) {
+		t.Errorf("public post should not emit robots meta; got:\n%s", html)
+	}
+}
diff --git a/bskyweb/cmd/bskyweb/server.go b/bskyweb/cmd/bskyweb/server.go
index c4f31f20b4..3a7e903f90 100644
--- a/bskyweb/cmd/bskyweb/server.go
+++ b/bskyweb/cmd/bskyweb/server.go
@@ -296,50 +296,50 @@ func serve(cctx *cli.Context) error {
 	// generic routes
 	e.GET("/hashtag/:tag", server.WebGeneric)
 	e.GET("/topic/:topic", server.WebGeneric)
-	e.GET("/search", server.WebGeneric)
-	e.GET("/feeds", server.WebGeneric)
-	e.GET("/notifications", server.WebGeneric)
-	e.GET("/notifications/settings", server.WebGeneric)
-	e.GET("/notifications/activity", server.WebGeneric)
-	e.GET("/lists", server.WebGeneric)
-	e.GET("/moderation", server.WebGeneric)
-	e.GET("/moderation/modlists", server.WebGeneric)
-	e.GET("/moderation/muted-accounts", server.WebGeneric)
-	e.GET("/moderation/blocked-accounts", server.WebGeneric)
-	e.GET("/moderation/verification-settings", server.WebGeneric)
-	e.GET("/settings", server.WebGeneric)
-	e.GET("/settings/language", server.WebGeneric)
-	e.GET("/settings/app-passwords", server.WebGeneric)
-	e.GET("/settings/following-feed", server.WebGeneric)
-	e.GET("/settings/saved-feeds", server.WebGeneric)
-	e.GET("/settings/threads", server.WebGeneric)
-	e.GET("/settings/external-embeds", server.WebGeneric)
-	e.GET("/settings/accessibility", server.WebGeneric)
-	e.GET("/settings/appearance", server.WebGeneric)
-	e.GET("/settings/account", server.WebGeneric)
-	e.GET("/settings/automation-label", server.WebGeneric)
-	e.GET("/settings/privacy-and-security", server.WebGeneric)
-	e.GET("/settings/privacy-and-security/activity", server.WebGeneric)
-	e.GET("/settings/content-and-media", server.WebGeneric)
-	e.GET("/settings/interests", server.WebGeneric)
-	e.GET("/settings/about", server.WebGeneric)
-	e.GET("/settings/notifications", server.WebGeneric)
-	e.GET("/sys/debug", server.WebGeneric)
-	e.GET("/sys/debug-mod", server.WebGeneric)
-	e.GET("/sys/log", server.WebGeneric)
+	e.GET("/search", server.WebGenericNoindex)
+	e.GET("/feeds", server.WebGenericNoindex)
+	e.GET("/notifications", server.WebGenericNoindex)
+	e.GET("/notifications/settings", server.WebGenericNoindex)
+	e.GET("/notifications/activity", server.WebGenericNoindex)
+	e.GET("/lists", server.WebGenericNoindex)
+	e.GET("/moderation", server.WebGenericNoindex)
+	e.GET("/moderation/modlists", server.WebGenericNoindex)
+	e.GET("/moderation/muted-accounts", server.WebGenericNoindex)
+	e.GET("/moderation/blocked-accounts", server.WebGenericNoindex)
+	e.GET("/moderation/verification-settings", server.WebGenericNoindex)
+	e.GET("/settings", server.WebGenericNoindex)
+	e.GET("/settings/language", server.WebGenericNoindex)
+	e.GET("/settings/app-passwords", server.WebGenericNoindex)
+	e.GET("/settings/following-feed", server.WebGenericNoindex)
+	e.GET("/settings/saved-feeds", server.WebGenericNoindex)
+	e.GET("/settings/threads", server.WebGenericNoindex)
+	e.GET("/settings/external-embeds", server.WebGenericNoindex)
+	e.GET("/settings/accessibility", server.WebGenericNoindex)
+	e.GET("/settings/appearance", server.WebGenericNoindex)
+	e.GET("/settings/account", server.WebGenericNoindex)
+	e.GET("/settings/automation-label", server.WebGenericNoindex)
+	e.GET("/settings/privacy-and-security", server.WebGenericNoindex)
+	e.GET("/settings/privacy-and-security/activity", server.WebGenericNoindex)
+	e.GET("/settings/content-and-media", server.WebGenericNoindex)
+	e.GET("/settings/interests", server.WebGenericNoindex)
+	e.GET("/settings/about", server.WebGenericNoindex)
+	e.GET("/settings/notifications", server.WebGenericNoindex)
+	e.GET("/sys/debug", server.WebGenericNoindex)
+	e.GET("/sys/debug-mod", server.WebGenericNoindex)
+	e.GET("/sys/log", server.WebGenericNoindex)
 	e.GET("/support", server.WebGeneric)
 	e.GET("/support/privacy", server.WebGeneric)
 	e.GET("/support/tos", server.WebGeneric)
 	e.GET("/support/community-guidelines", server.WebGeneric)
 	e.GET("/support/copyright", server.WebGeneric)
-	e.GET("/intent/compose", server.WebGeneric)
-	e.GET("/intent/verify-email", server.WebGeneric)
-	e.GET("/intent/age-assurance", server.WebGeneric)
-	e.GET("/messages", server.WebGeneric)
-	e.GET("/messages/inbox", server.WebGeneric)
-	e.GET("/messages/:conversation", server.WebGeneric)
-	e.GET("/messages/:conversation/settings", server.WebGeneric)
-	e.GET("/messages/:conversation/requests", server.WebGeneric)
+	e.GET("/intent/compose", server.WebGenericNoindexNofollow)
+	e.GET("/intent/verify-email", server.WebGenericNoindexNofollow)
+	e.GET("/intent/age-assurance", server.WebGenericNoindexNofollow)
+	e.GET("/messages", server.WebGenericNoindex)
+	e.GET("/messages/inbox", server.WebGenericNoindex)
+	e.GET("/messages/:conversation", server.WebGenericNoindex)
+	e.GET("/messages/:conversation/settings", server.WebGenericNoindex)
+	e.GET("/messages/:conversation/requests", server.WebGenericNoindex)
 
 	// profile endpoints; only first populates info
 	e.GET("/profile/:handleOrDID", server.WebProfile)
@@ -363,14 +363,14 @@ func serve(cctx *cli.Context) error {
 
 	// starter packs
 	e.GET("/starter-pack/:handleOrDID/:rkey", server.WebStarterPack)
-	e.GET("/starter-pack-short/:code", server.WebGeneric)
+	e.GET("/starter-pack-short/:code", server.WebGenericNoindex)
 	e.GET("/start/:handleOrDID/:rkey", server.WebStarterPack)
 
 	// chat invites
 	e.GET("/chat/:code", server.WebChatInvite)
 
 	// bookmarks
-	e.GET("/saved", server.WebGeneric)
+	e.GET("/saved", server.WebGenericNoindex)
 
 	// ipcc
 	e.GET("/ipcc", server.WebIpCC)
@@ -437,6 +437,8 @@ func (srv *Server) NewTemplateContext() pongo2.Context {
 	return pongo2.Context{
 		"staticCDNHost": srv.cfg.staticCDNHost,
 		"favicon":       fmt.Sprintf("%s/static/favicon.png", srv.cfg.staticCDNHost),
+		"noindex":       false,
+		"nofollow":      false,
 	}
 }
 
@@ -489,10 +491,38 @@ func (srv *Server) LinkProxyMiddleware(url *url.URL) echo.MiddlewareFunc {
 	)
 }
 
+// renderOptions controls per-request rendering flags for the generic web handler.
+type renderOptions struct {
+	noindex  bool
+	nofollow bool
+}
+
+// webGeneric returns a handler that renders the base SPA shell with the given
+// render options applied to the template context.
+func (srv *Server) webGeneric(c echo.Context, o renderOptions) error {
+	data := srv.NewTemplateContext()
+	data["noindex"] = o.noindex
+	data["nofollow"] = o.nofollow
+	return c.Render(http.StatusOK, "base.html", data)
+}
+
 // handler for endpoint that have no specific server-side handling
 func (srv *Server) WebGeneric(c echo.Context) error {
-	data := srv.NewTemplateContext()
-	return c.Render(http.StatusOK, "base.html", data)
+	return srv.webGeneric(c, renderOptions{})
+}
+
+// handler for routes that should not be indexed by search engines
+// (e.g. auth-only user-state surfaces, internal/debug pages, action/intent dispatch URLs, search results)
+func (srv *Server) WebGenericNoindex(c echo.Context) error {
+	return srv.webGeneric(c, renderOptions{noindex: true})
+}
+
+// handler for action/intent dispatch URLs (e.g. /intent/compose). These accept
+// arbitrary query parameters from arbitrary third-party referrers, so we treat
+// them as link-graph dead-ends in addition to noindex. Anything legitimately
+// reachable from a hydrated intent page is also reachable via its canonical URL.
+func (srv *Server) WebGenericNoindexNofollow(c echo.Context) error {
+	return srv.webGeneric(c, renderOptions{noindex: true, nofollow: true})
 }
 
 func (srv *Server) WebHome(c echo.Context) error {
@@ -567,6 +597,8 @@ func (srv *Server) WebPost(c echo.Context) error {
 			data["canonicalURL"] = canonicalURL
 		}
 		data["requiresAuth"] = true
+		data["noindex"] = true
+		data["nofollow"] = true
 		data["profileHandle"] = pv.Handle
 		if pv.DisplayName != nil {
 			data["profileDisplayName"] = *pv.DisplayName
@@ -673,6 +705,7 @@ func (srv *Server) WebChatInvite(c echo.Context) error {
 	req := c.Request()
 	ctx := req.Context()
 	data := srv.NewTemplateContext()
+	data["noindex"] = true
 	data["requestURI"] = fmt.Sprintf("https://%s%s", req.Host, req.URL.Path)
 
 	code := c.Param("code")
@@ -760,6 +793,8 @@ func (srv *Server) WebProfile(c echo.Context) error {
 		}
 	} else {
 		data["requiresAuth"] = true
+		data["noindex"] = true
+		data["nofollow"] = true
 	}
 
 	if jsonld, err := buildProfileJSONLD(pv, recentPosts, hideEmbedLabels, hideReplyLabels); err == nil {
diff --git a/bskyweb/templates/base.html b/bskyweb/templates/base.html
index e33479e697..7f723ce36c 100644
--- a/bskyweb/templates/base.html
+++ b/bskyweb/templates/base.html
@@ -139,6 +139,7 @@
   <meta name="theme-color">
   <meta name="application-name" content="Bluesky">
   <meta name="generator" content="bskyweb">
+  {% if noindex %}<meta name="robots" content="noindex{% if nofollow %}, nofollow{% endif %}">{% endif %}
   <meta property="og:site_name" content="Bluesky Social">
   <meta property="og:logo" content="{{ favicon }}">
   <meta name="twitter:site" content="@bluesky" />