diff --git a/app/controllers/api/graphql.php b/app/controllers/api/graphql.php
index 2d0a840bd6..7717da8981 100644
--- a/app/controllers/api/graphql.php
+++ b/app/controllers/api/graphql.php
@@ -115,13 +115,16 @@ Http::post('/v1/graphql/mutation')
     ->inject('promiseAdapter')
     ->action(function (Request $request, Response $response, GQLSchema $schema, Adapter $promiseAdapter) {
         $query = $request->getParams();
+        $type = $request->getHeader('content-type', '');
 
-        if ($request->getHeader('x-sdk-graphql') == 'true') {
-            $query = $query['query'];
+        if (empty($query) && \str_starts_with($type, 'application/json')) {
+            $rawPayload = $request->getRawPayload();
+            $decoded = \json_decode($rawPayload, true);
+            if (\is_array($decoded)) {
+                $query = $decoded;
+            }
         }
 
-        $type = $request->getHeader('content-type');
-
         if (\str_starts_with($type, 'application/graphql')) {
             $query = parseGraphql($request);
         }
@@ -130,6 +133,10 @@ Http::post('/v1/graphql/mutation')
             $query = parseMultipart($query, $request);
         }
 
+        if ($request->getHeader('x-sdk-graphql') == 'true' && isset($query['query'])) {
+            $query = $query['query'];
+        }
+
         $output = execute($schema, $promiseAdapter, $query);
 
         $response
@@ -166,13 +173,16 @@ Http::post('/v1/graphql')
     ->inject('promiseAdapter')
     ->action(function (Request $request, Response $response, GQLSchema $schema, Adapter $promiseAdapter) {
         $query = $request->getParams();
+        $type = $request->getHeader('content-type', '');
 
-        if ($request->getHeader('x-sdk-graphql') == 'true') {
-            $query = $query['query'];
+        if (empty($query) && \str_starts_with($type, 'application/json')) {
+            $rawPayload = $request->getRawPayload();
+            $decoded = \json_decode($rawPayload, true);
+            if (\is_array($decoded)) {
+                $query = $decoded;
+            }
         }
 
-        $type = $request->getHeader('content-type');
-
         if (\str_starts_with($type, 'application/graphql')) {
             $query = parseGraphql($request);
         }
@@ -181,6 +191,10 @@ Http::post('/v1/graphql')
             $query = parseMultipart($query, $request);
         }
 
+        if ($request->getHeader('x-sdk-graphql') == 'true' && isset($query['query'])) {
+            $query = $query['query'];
+        }
+
         $output = execute($schema, $promiseAdapter, $query);
 
         $response