diff --git a/apps/admin/src/components/MetadataPanel.tsx b/apps/admin/src/components/MetadataPanel.tsx
index c5dc45c..951cb6e 100644
--- a/apps/admin/src/components/MetadataPanel.tsx
+++ b/apps/admin/src/components/MetadataPanel.tsx
@@ -3,7 +3,6 @@ import { Box, Stack, TextField, Typography, IconButton } from '@mui/material';
 export type Metadata = {
   title: string;
   tagsText: string; // comma-separated
-  canonicalUrl: string;
   featureImage?: string;
 };
 
@@ -20,7 +19,6 @@ export default function MetadataPanel({ value, onChange }: {
       <Stack spacing={1}>
         <TextField label="Title" value={value.title} onChange={(e) => set({ title: e.target.value })} fullWidth />
         <TextField label="Tags (comma-separated)" value={value.tagsText} onChange={(e) => set({ tagsText: e.target.value })} fullWidth />
-        <TextField label="Canonical URL" value={value.canonicalUrl} onChange={(e) => set({ canonicalUrl: e.target.value })} fullWidth />
         <TextField label="Feature Image URL" value={value.featureImage || ''} onChange={(e) => set({ featureImage: e.target.value })} fullWidth />
         {value.featureImage && (
           <Box sx={{ position: 'relative', border: '1px solid #eee', borderRadius: 1, overflow: 'hidden', height: 180, background: '#fafafa' }}>
diff --git a/apps/admin/src/components/steps/StepMetadata.tsx b/apps/admin/src/components/steps/StepMetadata.tsx
index 83696e7..c969bf4 100644
--- a/apps/admin/src/components/steps/StepMetadata.tsx
+++ b/apps/admin/src/components/steps/StepMetadata.tsx
@@ -41,7 +41,6 @@ export default function StepMetadata({
       const newMetadata: Metadata = {
         title: metadata.title,
         tagsText: metadata.tags,
-        canonicalUrl: metadata.canonicalUrl,
         featureImage: value.featureImage, // Keep existing feature image
       };
       
diff --git a/apps/admin/src/hooks/usePostEditor.ts b/apps/admin/src/hooks/usePostEditor.ts
index 261820c..fe06e82 100644
--- a/apps/admin/src/hooks/usePostEditor.ts
+++ b/apps/admin/src/hooks/usePostEditor.ts
@@ -6,7 +6,7 @@ import type { Metadata } from '../components/MetadataPanel';
 export function usePostEditor(initialPostId?: string | null) {
   const [postId, setPostId] = useState<string | null>(null);
   const [draft, setDraft] = useState<string>('');
-  const [meta, setMeta] = useState<Metadata>({ title: '', tagsText: '', canonicalUrl: '', featureImage: '' });
+  const [meta, setMeta] = useState<Metadata>({ title: '', tagsText: '', featureImage: '' });
   const [postClips, setPostClips] = useState<Array<{ id: string; bucket: string; key: string; mime: string; transcript?: string; createdAt: string }>>([]);
   const [postStatus, setPostStatus] = useState<'inbox' | 'editing' | 'ready_for_publish' | 'published' | 'archived'>('editing');
   const [promptText, setPromptText] = useState<string>('');
@@ -46,7 +46,6 @@ export function usePostEditor(initialPostId?: string | null) {
             ...m,
             title: data.title || '',
             tagsText: data.tagsText || '',
-            canonicalUrl: data.canonicalUrl || '',
             featureImage: data.featureImage || ''
           }));
           if (data.status) setPostStatus(data.status);
@@ -69,7 +68,6 @@ export function usePostEditor(initialPostId?: string | null) {
       contentHtml: draft,
       tags: meta.tagsText ? meta.tagsText.split(',').map(t => t.trim()).filter(Boolean) : undefined,
       featureImage: meta.featureImage || undefined,
-      canonicalUrl: meta.canonicalUrl || undefined,
       status: postStatus,
       prompt: promptText || undefined,
       selectedImageKeys: genImageKeys.length > 0 ? genImageKeys : undefined,
@@ -102,7 +100,6 @@ export function usePostEditor(initialPostId?: string | null) {
       title: meta.title || 'Untitled',
       html: draft,
       feature_image: meta.featureImage || null,
-      canonical_url: meta.canonicalUrl || null,
       tags,
       status,
       authors: selectedAuthor ? [selectedAuthor] : undefined,
diff --git a/apps/api/src/ghost.ts b/apps/api/src/ghost.ts
index 5a94c8d..f1e9cc7 100644
--- a/apps/api/src/ghost.ts
+++ b/apps/api/src/ghost.ts
@@ -146,6 +146,19 @@ router.post('/post', async (req, res) => {
       }
     } catch {}
 
+    function isValidHttpUrl(u?: string | null): boolean {
+      if (!u || typeof u !== 'string') return false;
+      try {
+        const parsed = new URL(u);
+        return parsed.protocol === 'http:' || parsed.protocol === 'https:';
+      } catch {
+        return false;
+      }
+    }
+
+    const safeCanonical = isValidHttpUrl(canonical_url) ? canonical_url : undefined;
+    const safeFeatureImage = isValidHttpUrl(rewrittenFeatureImage) ? rewrittenFeatureImage : undefined;
+
     const payload = {
       posts: [
         {
@@ -154,8 +167,8 @@ router.post('/post', async (req, res) => {
           html: rewrittenHtml,
           status: status || 'draft',
           tags: tags && Array.isArray(tags) ? tags : [],
-          ...(rewrittenFeatureImage ? { feature_image: rewrittenFeatureImage } : {}),
-          ...(canonical_url ? { canonical_url } : {}),
+          ...(safeFeatureImage ? { feature_image: safeFeatureImage } : {}),
+          ...(safeCanonical ? { canonical_url: safeCanonical } : {}),
           ...(authors && Array.isArray(authors) && authors.length > 0 ? { authors } : {}),
         },
       ],