diff --git a/platformio/home/rpc/handlers/platform.py b/platformio/home/rpc/handlers/platform.py
index 2cc959df..fe368a5a 100644
--- a/platformio/home/rpc/handlers/platform.py
+++ b/platformio/home/rpc/handlers/platform.py
@@ -12,21 +12,52 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from platformio.compat import aio_to_thread
 from platformio.home.rpc.handlers.base import BaseRPCHandler
 from platformio.package.manager.platform import PlatformPackageManager
+from platformio.package.meta import PackageSpec
 from platformio.platform.factory import PlatformFactory
 
 
 class PlatformRPC(BaseRPCHandler):
+    async def fetch_platforms(self, search_query=None, page=0, force_installed=False):
+        if force_installed:
+            return {
+                "items": await aio_to_thread(
+                    self._load_installed_platforms, search_query
+                )
+            }
+
+        search_result = await self.factory.manager.dispatcher["registry.call_client"](
+            method="list_packages",
+            query=search_query,
+            qualifiers={
+                "types": ["platform"],
+            },
+            page=page,
+        )
+        return {
+            "page": search_result["page"],
+            "limit": search_result["limit"],
+            "total": search_result["total"],
+            "items": [
+                {
+                    "id": item["id"],
+                    "name": item["name"],
+                    "description": item["description"],
+                    "tier": item["tier"],
+                    "ownername": item["owner"]["username"],
+                    "version": item["version"]["name"],
+                }
+                for item in search_result["items"]
+            ],
+        }
+
     @staticmethod
-    def list_installed(options=None):
-        result = []
-        options = options or {}
+    def _load_installed_platforms(search_query=None):
+        search_query = (search_query or "").strip()
 
         def _matchSearchQuery(p):
-            searchQuery = options.get("searchQuery")
-            if not searchQuery:
-                return True
             content_blocks = [p.name, p.title, p.description]
             if p.frameworks:
                 content_blocks.append(" ".join(p.frameworks.keys()))
@@ -34,27 +65,41 @@ class PlatformRPC(BaseRPCHandler):
                 board_data = board.get_brief_data()
                 for key in ("id", "mcu", "vendor"):
                     content_blocks.append(board_data.get(key))
-            return searchQuery.strip() in " ".join(content_blocks)
+            return search_query in " ".join(content_blocks)
 
+        items = []
         pm = PlatformPackageManager()
         for pkg in pm.get_installed():
             p = PlatformFactory.new(pkg)
-            if not _matchSearchQuery(p):
+            if search_query and not _matchSearchQuery(p):
                 continue
-            result.append(
-                dict(
-                    __pkg_path=pkg.path,
-                    __pkg_meta=pkg.metadata.as_dict(),
-                    name=p.name,
-                    title=p.title,
-                    description=p.description,
-                )
+            items.append(
+                {
+                    "__pkg_path": pkg.path,
+                    "name": p.name,
+                    "title": p.title,
+                    "description": p.description,
+                    "ownername": pkg.metadata.spec.owner if pkg.metadata.spec else None,
+                    "version": str(pkg.metadata.version),
+                }
             )
-        return result
+        return items
+
+    async def fetch_boards(self, platform_spec):
+        spec = PackageSpec(platform_spec)
+        if spec.owner:
+            return await self.factory.manager.dispatcher["registry.call_client"](
+                method="get_package",
+                typex="platform",
+                owner=spec.owner,
+                name=spec.name,
+                extra_path="/boards",
+            )
+        return await aio_to_thread(self._load_installed_boards, spec)
 
     @staticmethod
-    def get_boards(spec):
-        p = PlatformFactory.new(spec)
+    def _load_installed_boards(platform_spec):
+        p = PlatformFactory.new(platform_spec)
         return sorted(
             [b.get_brief_data() for b in p.get_boards().values()],
             key=lambda item: item["name"],