fix: list_published queries drafts endpoint instead of published posts

list_published() was calling get_drafts() and filtering by post_date,
which returns 0 results because the drafts API only returns unpublished
content. Fixed by adding get_published_posts() to APIWrapper (wrapping
the library's get_published_posts method, handling its dict response
format) and updating list_published() to call it directly.

Added two unit tests to prevent regression.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: jprendergastAP

src/handlers/post_handler.py

@@ -369,18 +369,7 @@ async def list_published(self, limit: int = 10) -> List[Dict[str, Any]]:
         if limit < 1 or limit > 25:
             raise ValueError("limit must be between 1 and 25")
 
-        # Get all posts and filter for published only
-        all_posts = self.client.get_drafts(limit=min(limit, 25))
-        published = []
-
-        for post in all_posts:
-            # Check if it's published (has a post_date)
-            if post.get("post_date"):
-                published.append(post)
-                if len(published) >= limit:
-                    break
-
-        return published
+        return self.client.get_published_posts(limit=limit)
 
     async def get_post(self, post_id: str) -> Dict[str, Any]:
         """Get a specific post by ID

src/utils/api_wrapper.py

@@ -152,6 +152,31 @@ def get_draft(self, post_id: str) -> Dict[str, Any]:
             )
             raise SubstackAPIError(f"Failed to get post {post_id}: {str(e)}")
 
+    def get_published_posts(self, limit: int = 10) -> List[Dict[str, Any]]:
+        """Get published posts with error handling"""
+        try:
+            result = self.client.get_published_posts(limit=limit)
+            # get_published_posts returns {'posts': [...]} not a bare list
+            if isinstance(result, dict) and "posts" in result:
+                items = result["posts"]
+            elif isinstance(result, list):
+                items = result
+            else:
+                logger.warning(
+                    f"Unexpected get_published_posts response type: {type(result)}"
+                )
+                return []
+
+            posts = []
+            for item in items:
+                checked = self._handle_response(item, "get_published_posts[item]")
+                if isinstance(checked, dict):
+                    posts.append(checked)
+            return posts
+        except Exception as e:
+            logger.error(f"get_published_posts error: {type(e).__name__}: {str(e)}")
+            return []
+
     def get_drafts(self, limit: int = 10) -> List[Dict[str, Any]]:
         """Get drafts with error handling"""
         try:

tests/unit/test_post_handler.py

@@ -243,6 +243,31 @@ async def test_invalid_content_type(self):
                 title="Test", content="Content", content_type="invalid"
             )
 
+    @pytest.mark.asyncio
+    async def test_list_published_uses_published_endpoint(self):
+        """list_published must call get_published_posts, not get_drafts"""
+        mock_posts = [
+            {"id": "post-1", "title": "Published 1", "post_date": "2026-04-08T12:00:00Z"},
+            {"id": "post-2", "title": "Published 2", "post_date": "2026-03-23T12:00:00Z"},
+        ]
+        self.mock_client.get_published_posts = Mock(return_value=mock_posts)
+
+        result = await self.handler.list_published(limit=10)
+
+        assert len(result) == 2
+        assert result[0]["title"] == "Published 1"
+        self.mock_client.get_published_posts.assert_called_once_with(limit=10)
+        self.mock_client.get_drafts.assert_not_called()
+
+    @pytest.mark.asyncio
+    async def test_list_published_respects_limit(self):
+        """list_published passes limit to get_published_posts"""
+        self.mock_client.get_published_posts = Mock(return_value=[])
+
+        await self.handler.list_published(limit=5)
+
+        self.mock_client.get_published_posts.assert_called_once_with(limit=5)
+
     @pytest.mark.asyncio
     async def test_error_handling(self):
         """Test error handling when API calls fail"""