diff --git a/kong/mcp/ai-mcp-proxy.yaml b/kong/mcp/ai-mcp-proxy.yaml
index 02b34b8..054ced2 100644
--- a/kong/mcp/ai-mcp-proxy.yaml
+++ b/kong/mcp/ai-mcp-proxy.yaml
@@ -58,13 +58,15 @@ config:
                   type: integer
                   example: 123
                 next:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=4
                 previous:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=2
                 results:
@@ -84,15 +86,17 @@ config:
                         type: string
                         format: date
                       shippeddate:
-                        type: string
+                        type:
+                        - string
+                        - 'null'
                         format: date
-                        nullable: true
                       status:
                         type: string
                         maxLength: 15
                       comments:
-                        type: string
-                        nullable: true
+                        type:
+                        - string
+                        - 'null'
                       customernumber:
                         type: integer
                         maximum: 2147483647
@@ -148,15 +152,17 @@ config:
                   type: string
                   format: date
                 shippeddate:
-                  type: string
+                  type:
+                  - string
+                  - 'null'
                   format: date
-                  nullable: true
                 status:
                   type: string
                   maxLength: 15
                 comments:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                 customernumber:
                   type: integer
                   maximum: 2147483647
@@ -217,13 +223,15 @@ config:
                   type: integer
                   example: 123
                 next:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=4
                 previous:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=2
                 results:
@@ -323,15 +331,17 @@ config:
                   type: string
                   format: date
                 shippeddate:
-                  type: string
+                  type:
+                  - string
+                  - 'null'
                   format: date
-                  nullable: true
                 status:
                   type: string
                   maxLength: 15
                 comments:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                 customernumber:
                   type: integer
                   maximum: 2147483647
@@ -385,13 +395,15 @@ config:
                   type: integer
                   example: 123
                 next:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=4
                 previous:
-                  type: string
-                  nullable: true
+                  type:
+                  - string
+                  - 'null'
                   format: uri
                   example: http://api.example.org/accounts/?page=2
                 results: