diff --git a/simplyblock_web/api/v2/cluster.py b/simplyblock_web/api/v2/cluster.py
index 4100bbd3f..92e6169e6 100644
--- a/simplyblock_web/api/v2/cluster.py
+++ b/simplyblock_web/api/v2/cluster.py
@@ -45,38 +45,41 @@ class HashicorpVaultSettings(BaseModel):
     base_url: Optional[Annotated[AnyUrl, UrlConstraints(allowed_schemes=["https"])]] = None
 
 
+_immutable = {"x-immutable": True}
+
+
 class ClusterParams(BaseModel):
     name: str = ""
-    blk_size: Literal[512, 4096] = 512
-    page_size_in_blocks: int = Field(2097152, gt=0)
+    blk_size: Literal[512, 4096] = Field(default=512, json_schema_extra=_immutable)
+    page_size_in_blocks: int = Field(2097152, gt=0, json_schema_extra=_immutable)
     cap_warn: util.Percent = 0
     cap_crit: util.Percent = 0
     prov_cap_warn: util.Percent = 0
     prov_cap_crit: util.Percent = 0
-    distr_ndcs: int = 1
-    distr_npcs: int = 1
-    distr_bs: int = 4096
-    distr_chunk_bs: int = 4096
-    ha_type: Literal['single', 'ha'] = 'ha'
-    qpair_count: int = 256
-    max_queue_size: int = 128
-    inflight_io_threshold: int = 4
-    enable_node_affinity: bool = False
-    strict_node_anti_affinity: bool = False
-    is_single_node: bool = False
-    fabric: str = "tcp"
+    distr_ndcs: int = Field(default=1, json_schema_extra=_immutable)
+    distr_npcs: int = Field(default=1, json_schema_extra=_immutable)
+    distr_bs: int = Field(default=4096, json_schema_extra=_immutable)
+    distr_chunk_bs: int = Field(default=4096, json_schema_extra=_immutable)
+    ha_type: Literal['single', 'ha'] = Field(default='ha', json_schema_extra=_immutable)
+    qpair_count: int = Field(default=256, json_schema_extra=_immutable)
+    max_queue_size: int = Field(default=128, json_schema_extra=_immutable)
+    inflight_io_threshold: int = Field(default=4, json_schema_extra=_immutable)
+    enable_node_affinity: bool = Field(default=False, json_schema_extra=_immutable)
+    strict_node_anti_affinity: bool = Field(default=False, json_schema_extra=_immutable)
+    is_single_node: bool = Field(default=False, json_schema_extra=_immutable)
+    fabric: str = Field(default="tcp", json_schema_extra=_immutable)
     cr_name: str = ""
     cr_namespace: str = ""
     cr_plural: str = ""
     cluster_ip: str = ""
     grafana_secret: str = ""
-    client_data_nic: str = ""
-    max_fault_tolerance: int = 1
-    nvmf_base_port: int = 4420
-    rpc_base_port: int = 8080
-    snode_api_port: int = 50001
+    client_data_nic: str = Field(default="", json_schema_extra=_immutable)
+    max_fault_tolerance: int = Field(default=1, json_schema_extra=_immutable)
+    nvmf_base_port: int = Field(default=4420, json_schema_extra=_immutable)
+    rpc_base_port: int = Field(default=8080, json_schema_extra=_immutable)
+    snode_api_port: int = Field(default=50001, json_schema_extra=_immutable)
     backup_config: Optional[BackupConfigParams] = None
-    hashicorp_vault_settings: Optional[HashicorpVaultSettings] = None
+    hashicorp_vault_settings: Optional[HashicorpVaultSettings] = Field(default=None, json_schema_extra=_immutable)
 
 
 @api.get('/', name='clusters:list')
diff --git a/simplyblock_web/static/openapi.json b/simplyblock_web/static/openapi.json
index 883326f2a..ae5fbe229 100644
--- a/simplyblock_web/static/openapi.json
+++ b/simplyblock_web/static/openapi.json
@@ -6048,13 +6048,15 @@
               4096
             ],
             "title": "Blk Size",
-            "default": 512
+            "default": 512,
+            "x-immutable": true
           },
           "page_size_in_blocks": {
             "type": "integer",
             "exclusiveMinimum": 0.0,
             "title": "Page Size In Blocks",
-            "default": 2097152
+            "default": 2097152,
+            "x-immutable": true
           },
           "cap_warn": {
             "type": "integer",
@@ -6087,22 +6089,26 @@
           "distr_ndcs": {
             "type": "integer",
             "title": "Distr Ndcs",
-            "default": 1
+            "default": 1,
+            "x-immutable": true
           },
           "distr_npcs": {
             "type": "integer",
             "title": "Distr Npcs",
-            "default": 1
+            "default": 1,
+            "x-immutable": true
           },
           "distr_bs": {
             "type": "integer",
             "title": "Distr Bs",
-            "default": 4096
+            "default": 4096,
+            "x-immutable": true
           },
           "distr_chunk_bs": {
             "type": "integer",
             "title": "Distr Chunk Bs",
-            "default": 4096
+            "default": 4096,
+            "x-immutable": true
           },
           "ha_type": {
             "type": "string",
@@ -6111,42 +6117,50 @@
               "ha"
             ],
             "title": "Ha Type",
-            "default": "ha"
+            "default": "ha",
+            "x-immutable": true
           },
           "qpair_count": {
             "type": "integer",
             "title": "Qpair Count",
-            "default": 256
+            "default": 256,
+            "x-immutable": true
           },
           "max_queue_size": {
             "type": "integer",
             "title": "Max Queue Size",
-            "default": 128
+            "default": 128,
+            "x-immutable": true
           },
           "inflight_io_threshold": {
             "type": "integer",
             "title": "Inflight Io Threshold",
-            "default": 4
+            "default": 4,
+            "x-immutable": true
           },
           "enable_node_affinity": {
             "type": "boolean",
             "title": "Enable Node Affinity",
-            "default": false
+            "default": false,
+            "x-immutable": true
           },
           "strict_node_anti_affinity": {
             "type": "boolean",
             "title": "Strict Node Anti Affinity",
-            "default": false
+            "default": false,
+            "x-immutable": true
           },
           "is_single_node": {
             "type": "boolean",
             "title": "Is Single Node",
-            "default": false
+            "default": false,
+            "x-immutable": true
           },
           "fabric": {
             "type": "string",
             "title": "Fabric",
-            "default": "tcp"
+            "default": "tcp",
+            "x-immutable": true
           },
           "cr_name": {
             "type": "string",
@@ -6176,27 +6190,32 @@
           "client_data_nic": {
             "type": "string",
             "title": "Client Data Nic",
-            "default": ""
+            "default": "",
+            "x-immutable": true
           },
           "max_fault_tolerance": {
             "type": "integer",
             "title": "Max Fault Tolerance",
-            "default": 1
+            "default": 1,
+            "x-immutable": true
           },
           "nvmf_base_port": {
             "type": "integer",
             "title": "Nvmf Base Port",
-            "default": 4420
+            "default": 4420,
+            "x-immutable": true
           },
           "rpc_base_port": {
             "type": "integer",
             "title": "Rpc Base Port",
-            "default": 8080
+            "default": 8080,
+            "x-immutable": true
           },
           "snode_api_port": {
             "type": "integer",
             "title": "Snode Api Port",
-            "default": 50001
+            "default": 50001,
+            "x-immutable": true
           },
           "backup_config": {
             "anyOf": [
@@ -8125,4 +8144,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}