diff --git a/website/scripts/generate-skill-docs.py b/website/scripts/generate-skill-docs.py
index 2a0694a61c8..c932f01e1bc 100755
--- a/website/scripts/generate-skill-docs.py
+++ b/website/scripts/generate-skill-docs.py
@@ -602,7 +602,7 @@ def build_sidebar_items(entries: list[tuple[dict[str, Any], dict[str, Any]]]) ->
         else:
             optional[meta["category"]].append(meta)
 
-    def cat_section(bucket: dict[str, list[dict[str, Any]]]) -> list[dict]:
+    def cat_section(bucket: dict[str, list[dict[str, Any]]], source: str) -> list[dict]:
         result = []
         for category in sorted(bucket):
             items = sorted(bucket[category], key=lambda m: m["slug"])
@@ -610,6 +610,13 @@ def build_sidebar_items(entries: list[tuple[dict[str, Any], dict[str, Any]]]) ->
                 {
                     "type": "category",
                     "label": category,
+                    # Docusaurus generates a translation key from the label by
+                    # default (e.g. sidebar.docs.category.productivity). When
+                    # the same category name appears under both Bundled and
+                    # Optional, the duplicate keys break i18n extraction and
+                    # fail the build. Scope each category by source to keep
+                    # the keys unique.
+                    "key": f"skills-{source}-{category}",
                     "collapsed": True,
                     "items": [sidebar_doc_id(m) for m in items],
                 }
@@ -617,8 +624,8 @@ def build_sidebar_items(entries: list[tuple[dict[str, Any], dict[str, Any]]]) ->
         return result
 
     return {
-        "bundled_categories": cat_section(bundled),
-        "optional_categories": cat_section(optional),
+        "bundled_categories": cat_section(bundled, "bundled"),
+        "optional_categories": cat_section(optional, "optional"),
     }
 
 
@@ -633,6 +640,8 @@ def _render_sidebar_item(item: Any, indent: int) -> list[str]:
     lines.append(f"{pad}{{")
     lines.append(f"{pad}  type: 'category',")
     lines.append(f"{pad}  label: '{item['label']}',")
+    if item.get("key"):
+        lines.append(f"{pad}  key: '{item['key']}',")
     if item.get("collapsed", True):
         lines.append(f"{pad}  collapsed: true,")
     lines.append(f"{pad}  items: [")
diff --git a/website/sidebars.ts b/website/sidebars.ts
index fe7b741eb2e..52ed452d046 100644
--- a/website/sidebars.ts
+++ b/website/sidebars.ts
@@ -121,6 +121,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'apple',
+                  key: 'skills-bundled-apple',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/apple/apple-apple-notes',
@@ -133,6 +134,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'autonomous-ai-agents',
+                  key: 'skills-bundled-autonomous-ai-agents',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-claude-code',
@@ -144,6 +146,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'creative',
+                  key: 'skills-bundled-creative',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/creative/creative-architecture-diagram',
@@ -170,6 +173,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'data-science',
+                  key: 'skills-bundled-data-science',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/data-science/data-science-jupyter-live-kernel',
@@ -178,6 +182,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'devops',
+                  key: 'skills-bundled-devops',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/devops/devops-kanban-orchestrator',
@@ -188,6 +193,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'dogfood',
+                  key: 'skills-bundled-dogfood',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/dogfood/dogfood-dogfood',
@@ -196,6 +202,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'email',
+                  key: 'skills-bundled-email',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/email/email-himalaya',
@@ -204,6 +211,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'gaming',
+                  key: 'skills-bundled-gaming',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/gaming/gaming-minecraft-modpack-server',
@@ -213,6 +221,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'github',
+                  key: 'skills-bundled-github',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/github/github-codebase-inspection',
@@ -226,6 +235,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'mcp',
+                  key: 'skills-bundled-mcp',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/mcp/mcp-native-mcp',
@@ -234,6 +244,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'media',
+                  key: 'skills-bundled-media',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/media/media-gif-search',
@@ -246,6 +257,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'mlops',
+                  key: 'skills-bundled-mlops',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/mlops/mlops-models-audiocraft',
@@ -262,6 +274,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'note-taking',
+                  key: 'skills-bundled-note-taking',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/note-taking/note-taking-obsidian',
@@ -270,6 +283,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'productivity',
+                  key: 'skills-bundled-productivity',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/productivity/productivity-airtable',
@@ -286,6 +300,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'red-teaming',
+                  key: 'skills-bundled-red-teaming',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/red-teaming/red-teaming-godmode',
@@ -294,6 +309,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'research',
+                  key: 'skills-bundled-research',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/research/research-arxiv',
@@ -306,6 +322,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'smart-home',
+                  key: 'skills-bundled-smart-home',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/smart-home/smart-home-openhue',
@@ -314,6 +331,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'social-media',
+                  key: 'skills-bundled-social-media',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/social-media/social-media-xurl',
@@ -322,6 +340,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'software-development',
+                  key: 'skills-bundled-software-development',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/software-development/software-development-debugging-hermes-tui-commands',
@@ -340,6 +359,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'yuanbao',
+                  key: 'skills-bundled-yuanbao',
                   collapsed: true,
                   items: [
                     'user-guide/skills/bundled/yuanbao/yuanbao-yuanbao',
@@ -355,6 +375,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'autonomous-ai-agents',
+                  key: 'skills-optional-autonomous-ai-agents',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/autonomous-ai-agents/autonomous-ai-agents-blackbox',
@@ -364,6 +385,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'blockchain',
+                  key: 'skills-optional-blockchain',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/blockchain/blockchain-evm',
@@ -374,6 +396,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'communication',
+                  key: 'skills-optional-communication',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/communication/communication-one-three-one-rule',
@@ -382,6 +405,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'creative',
+                  key: 'skills-optional-creative',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/creative/creative-blender-mcp',
@@ -394,6 +418,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'devops',
+                  key: 'skills-optional-devops',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/devops/devops-cli',
@@ -404,6 +429,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'dogfood',
+                  key: 'skills-optional-dogfood',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/dogfood/dogfood-adversarial-ux-test',
@@ -412,6 +438,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'email',
+                  key: 'skills-optional-email',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/email/email-agentmail',
@@ -420,6 +447,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'finance',
+                  key: 'skills-optional-finance',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/finance/finance-3-statement-model',
@@ -435,6 +463,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'health',
+                  key: 'skills-optional-health',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/health/health-fitness-nutrition',
@@ -444,6 +473,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'mcp',
+                  key: 'skills-optional-mcp',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/mcp/mcp-fastmcp',
@@ -453,6 +483,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'migration',
+                  key: 'skills-optional-migration',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/migration/migration-openclaw-migration',
@@ -461,6 +492,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'mlops',
+                  key: 'skills-optional-mlops',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/mlops/mlops-accelerate',
@@ -496,6 +528,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'productivity',
+                  key: 'skills-optional-productivity',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/productivity/productivity-canvas',
@@ -510,6 +543,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'research',
+                  key: 'skills-optional-research',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/research/research-bioinformatics',
@@ -526,6 +560,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'security',
+                  key: 'skills-optional-security',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/security/security-1password',
@@ -536,6 +571,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'software-development',
+                  key: 'skills-optional-software-development',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/software-development/software-development-rest-graphql-debug',
@@ -544,6 +580,7 @@ const sidebars: SidebarsConfig = {
                 {
                   type: 'category',
                   label: 'web-development',
+                  key: 'skills-optional-web-development',
                   collapsed: true,
                   items: [
                     'user-guide/skills/optional/web-development/web-development-page-agent',