diff --git a/lowcode/schema/definitions/command-interceptor-descriptor.schema.json b/lowcode/schema/definitions/command-interceptor-descriptor.schema.json
new file mode 100644
index 0000000000..ad0d0b02bd
--- /dev/null
+++ b/lowcode/schema/definitions/command-interceptor-descriptor.schema.json
@@ -0,0 +1,23 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "command-interceptor-descriptor.schema.json",
+  "title": "CommandInterceptorDescriptor",
+  "description": "Describes a command interceptor",
+  "type": "object",
+  "properties": {
+    "commandName": {
+      "type": "string",
+      "description": "Name of the command to intercept",
+      "enum": ["Create", "Update", "Delete"]
+    },
+    "type": {
+      "$ref": "interceptor-type.schema.json"
+    },
+    "javascript": {
+      "type": "string",
+      "description": "JavaScript code to execute"
+    }
+  },
+  "required": ["commandName", "type", "javascript"],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/endpoint-descriptor.schema.json b/lowcode/schema/definitions/endpoint-descriptor.schema.json
new file mode 100644
index 0000000000..4be4ccb761
--- /dev/null
+++ b/lowcode/schema/definitions/endpoint-descriptor.schema.json
@@ -0,0 +1,44 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Custom Endpoint Descriptor",
+  "description": "Defines a custom HTTP endpoint that executes JavaScript code",
+  "type": "object",
+  "properties": {
+    "name": {
+      "type": "string",
+      "description": "Unique identifier for the endpoint"
+    },
+    "route": {
+      "type": "string",
+      "description": "URL route pattern (e.g., '/api/custom/products/{id}')"
+    },
+    "method": {
+      "type": "string",
+      "description": "HTTP method",
+      "enum": ["GET", "POST", "PUT", "DELETE", "PATCH"],
+      "default": "GET"
+    },
+    "javascript": {
+      "type": "string",
+      "description": "JavaScript code to execute. Has access to context object with request, db, currentUser, emailSender."
+    },
+    "requireAuthentication": {
+      "type": "boolean",
+      "description": "Whether authentication is required",
+      "default": true
+    },
+    "requiredPermissions": {
+      "type": "array",
+      "description": "Permission names required to access the endpoint",
+      "items": {
+        "type": "string"
+      }
+    },
+    "description": {
+      "type": "string",
+      "description": "Optional description for documentation"
+    }
+  },
+  "required": ["name", "route", "javascript"],
+  "additionalProperties": false
+}
diff --git a/lowcode/schema/definitions/entity-descriptor.schema.json b/lowcode/schema/definitions/entity-descriptor.schema.json
new file mode 100644
index 0000000000..2023a043bc
--- /dev/null
+++ b/lowcode/schema/definitions/entity-descriptor.schema.json
@@ -0,0 +1,42 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "entity-descriptor.schema.json",
+  "title": "EntityDescriptor",
+  "description": "Describes an entity configuration",
+  "type": "object",
+  "properties": {
+    "name": {
+      "type": "string",
+      "description": "Full name of the entity (e.g., 'Namespace.EntityName')",
+      "minLength": 1
+    },
+    "displayProperty": {
+      "type": "string",
+      "description": "The property to be used as the display property for the entity"
+    },
+    "parent": {
+      "type": "string",
+      "description": "Full name of the parent entity (e.g., 'Namespace.EntityName')",
+      "minLength": 1
+    },
+    "ui": {
+      "$ref": "entity-ui-descriptor.schema.json"
+    },
+    "properties": {
+      "type": "array",
+      "description": "List of property descriptors",
+      "items": {
+        "$ref": "entity-property-descriptor.schema.json"
+      }
+    },
+    "interceptors": {
+      "type": "array",
+      "description": "List of command interceptors",
+      "items": {
+        "$ref": "command-interceptor-descriptor.schema.json"
+      }
+    }
+  },
+  "required": ["name"],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/entity-property-descriptor.schema.json b/lowcode/schema/definitions/entity-property-descriptor.schema.json
new file mode 100644
index 0000000000..ceeeb9eb60
--- /dev/null
+++ b/lowcode/schema/definitions/entity-property-descriptor.schema.json
@@ -0,0 +1,58 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "entity-property-descriptor.schema.json",
+  "title": "EntityPropertyDescriptor",
+  "description": "Describes a property configuration",
+  "type": "object",
+  "properties": {
+    "name": {
+      "type": "string",
+      "description": "Name of the property",
+      "minLength": 1
+    },
+    "type": {
+      "$ref": "entity-property-type.schema.json"
+    },
+    "enumType": {
+      "type": "string",
+      "description": "Name of a JSON-defined enum (or full type name for code enums)"
+    },
+    "allowSetByClients": {
+      "type": "boolean",
+      "description": "Indicates whether clients are allowed to set this property"
+    },
+    "serverOnly": {
+      "type": "boolean",
+      "description": "When true, this property is completely hidden from clients (API responses and UI definitions). Use for sensitive data like passwords."
+    },
+    "isMappedToDbField": {
+      "type": "boolean",
+      "description": "Indicates whether the property is mapped to a database field"
+    },
+    "isUnique": {
+      "type": "boolean",
+      "description": "Indicates whether the property value must be unique across all entities"
+    },
+    "isRequired": {
+      "type": "boolean",
+      "description": "When true, the property is required (not nullable). Affects DB column (NOT NULL), UI validation, and backend validation."
+    },
+    "ui": {
+      "$ref": "entity-property-ui-descriptor.schema.json"
+    },
+    "foreignKey": {
+      "$ref": "foreign-key-descriptor.schema.json"
+    },
+    "validators": {
+      "type": "array",
+      "description": "Array of validators to apply to this property",
+      "items": {
+        "$ref": "validator-descriptor.schema.json"
+      }
+    }
+  },
+  "required": [
+    "name"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/entity-property-type.schema.json b/lowcode/schema/definitions/entity-property-type.schema.json
new file mode 100644
index 0000000000..5eb7defa6a
--- /dev/null
+++ b/lowcode/schema/definitions/entity-property-type.schema.json
@@ -0,0 +1,25 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "entity-property-type.schema.json",
+  "title": "EntityPropertyType",
+  "description": "Data type of the property",
+  "type": "string",
+  "enum": [
+    "string",
+    "String",
+    "int",
+    "Int",
+    "long",
+    "Long",
+    "decimal",
+    "Decimal",
+    "dateTime",
+    "DateTime",
+    "boolean",
+    "Boolean",
+    "guid",
+    "Guid",
+    "enum",
+    "Enum"
+  ]
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/entity-property-ui-descriptor.schema.json b/lowcode/schema/definitions/entity-property-ui-descriptor.schema.json
new file mode 100644
index 0000000000..1a0ded7b76
--- /dev/null
+++ b/lowcode/schema/definitions/entity-property-ui-descriptor.schema.json
@@ -0,0 +1,32 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "entity-property-ui-descriptor.schema.json",
+  "title": "EntityPropertyUIDescriptor",
+  "description": "UI configuration for a property",
+  "type": "object",
+  "properties": {
+    "displayName": {
+      "type": "string",
+      "description": "Display name for the property in UI. Falls back to property name if not set."
+    },
+    "isAvailableOnDataTable": {
+      "type": "boolean",
+      "description": "Whether the property is shown in the data table listing"
+    },
+    "isAvailableOnDataTableFiltering": {
+      "type": "boolean",
+      "description": "Whether the property is available for filtering in the data table"
+    },
+    "creationFormAvailability": {
+      "$ref": "entity-property-ui-form-availability.schema.json"
+    },
+    "editingFormAvailability": {
+      "$ref": "entity-property-ui-form-availability.schema.json"
+    },
+    "quickLookOrder": {
+      "type": "integer",
+      "description": "Order of the property in quick look views. Higher numbers appear first. Set to -1 to exclude from quick look. If no property has a value, first 5 properties by name are shown."
+    }
+  },
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/entity-property-ui-form-availability.schema.json b/lowcode/schema/definitions/entity-property-ui-form-availability.schema.json
new file mode 100644
index 0000000000..dff4a5665c
--- /dev/null
+++ b/lowcode/schema/definitions/entity-property-ui-form-availability.schema.json
@@ -0,0 +1,15 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "entity-property-ui-form-availability.schema.json",
+  "title": "EntityPropertyUIFormAvailability",
+  "description": "Availability of the property on forms",
+  "type": "string",
+  "enum": [
+    "Available",
+    "available",
+    "Hidden",
+    "hidden",
+    "NotAvailable",
+    "notAvailable"
+  ]
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/entity-ui-descriptor.schema.json b/lowcode/schema/definitions/entity-ui-descriptor.schema.json
new file mode 100644
index 0000000000..3525d6c38e
--- /dev/null
+++ b/lowcode/schema/definitions/entity-ui-descriptor.schema.json
@@ -0,0 +1,14 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "entity-ui-descriptor.schema.json",
+  "title": "EntityUIDescriptor",
+  "description": "UI configuration for the entity",
+  "type": "object",
+  "properties": {
+    "pageTitle": {
+      "type": "string",
+      "description": "Title to display on the entity's page"
+    }
+  },
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/enum-descriptor.schema.json b/lowcode/schema/definitions/enum-descriptor.schema.json
new file mode 100644
index 0000000000..055ca6e126
--- /dev/null
+++ b/lowcode/schema/definitions/enum-descriptor.schema.json
@@ -0,0 +1,40 @@
+{
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "$id": "enum-descriptor.schema.json",
+    "title": "EnumDescriptor",
+    "description": "Describes an enum definition for use in entity properties",
+    "type": "object",
+    "properties": {
+        "name": {
+            "type": "string",
+            "description": "Unique name for the enum",
+            "minLength": 1
+        },
+        "values": {
+            "type": "array",
+            "description": "List of enum values",
+            "items": {
+                "type": "object",
+                "properties": {
+                    "name": {
+                        "type": "string",
+                        "description": "Display name of the enum value"
+                    },
+                    "value": {
+                        "type": "integer",
+                        "description": "Integer value (auto-assigned if omitted)"
+                    }
+                },
+                "required": [
+                    "name"
+                ]
+            },
+            "minItems": 1
+        }
+    },
+    "required": [
+        "name",
+        "values"
+    ],
+    "additionalProperties": false
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/foreign-key-descriptor.schema.json b/lowcode/schema/definitions/foreign-key-descriptor.schema.json
new file mode 100644
index 0000000000..27d0e81f03
--- /dev/null
+++ b/lowcode/schema/definitions/foreign-key-descriptor.schema.json
@@ -0,0 +1,27 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "foreign-key-descriptor.schema.json",
+  "title": "ForeignKeyDescriptor",
+  "description": "Describes a foreign key relationship",
+  "type": "object",
+  "properties": {
+    "entityName": {
+      "type": "string",
+      "description": "Full name of the related entity",
+      "minLength": 1
+    },
+    "displayPropertyName": {
+      "type": "string",
+      "description": "Property name to display from the related entity",
+      "minLength": 1
+    },
+    "access": {
+      "type": "string",
+      "description": "Access level for managing this relation from the referenced entity side. When set to 'view' or 'edit', the referenced entity can see/manage items that reference it.",
+      "enum": ["none", "view", "edit"],
+      "default": "none"
+    }
+  },
+  "required": ["entityName"],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/interceptor-type.schema.json b/lowcode/schema/definitions/interceptor-type.schema.json
new file mode 100644
index 0000000000..435c26b434
--- /dev/null
+++ b/lowcode/schema/definitions/interceptor-type.schema.json
@@ -0,0 +1,15 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "interceptor-type.schema.json",
+  "title": "InterceptorType",
+  "description": "When the interceptor runs",
+  "type": "string",
+  "enum": [
+    "Pre",
+    "pre",
+    "Post",
+    "post",
+    "Replace",
+    "replace"
+  ]
+}
\ No newline at end of file
diff --git a/lowcode/schema/definitions/validator-descriptor.schema.json b/lowcode/schema/definitions/validator-descriptor.schema.json
new file mode 100644
index 0000000000..7eeac0eba9
--- /dev/null
+++ b/lowcode/schema/definitions/validator-descriptor.schema.json
@@ -0,0 +1,69 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "validator-descriptor.schema.json",
+  "title": "ValidatorDescriptor",
+  "description": "A single validator in the validators array",
+  "type": "object",
+  "required": ["type"],
+  "properties": {
+    "type": {
+      "type": "string",
+      "description": "Type of validator",
+      "enum": [
+        "required",
+        "minLength",
+        "maxLength",
+        "stringLength",
+        "min",
+        "minimum",
+        "max",
+        "maximum",
+        "range",
+        "pattern",
+        "regularExpression",
+        "email",
+        "emailAddress",
+        "phone",
+        "url",
+        "creditCard"
+      ]
+    },
+    "message": {
+      "type": "string",
+      "description": "Custom error message for this validator"
+    },
+    "length": {
+      "type": "integer",
+      "description": "Length value for minLength, maxLength validators",
+      "minimum": 0
+    },
+    "minimumLength": {
+      "type": "integer",
+      "description": "Minimum length for stringLength validator",
+      "minimum": 0
+    },
+    "maximumLength": {
+      "type": "integer",
+      "description": "Maximum length for stringLength validator",
+      "minimum": 0
+    },
+    "value": {
+      "type": "number",
+      "description": "Value for min/minimum, max/maximum validators"
+    },
+    "minimum": {
+      "type": "number",
+      "description": "Minimum value for range validator"
+    },
+    "maximum": {
+      "type": "number",
+      "description": "Maximum value for range validator"
+    },
+    "pattern": {
+      "type": "string",
+      "description": "Regular expression pattern for pattern/regularExpression validators"
+    }
+  },
+  "additionalProperties": true
+}
+
diff --git a/lowcode/schema/model.schema.json b/lowcode/schema/model.schema.json
new file mode 100644
index 0000000000..3abcab70e4
--- /dev/null
+++ b/lowcode/schema/model.schema.json
@@ -0,0 +1,34 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ABP Low Code Model",
+  "description": "Schema for ABP Low Code model.json configuration file",
+  "type": "object",
+  "properties": {
+    "$schema": {
+      "type": "string",
+      "description": "Reference to the JSON schema"
+    },
+    "enums": {
+      "type": "array",
+      "description": "List of enum definitions",
+      "items": {
+        "$ref": "definitions/enum-descriptor.schema.json"
+      }
+    },
+    "entities": {
+      "type": "array",
+      "description": "List of entity descriptors",
+      "items": {
+        "$ref": "definitions/entity-descriptor.schema.json"
+      }
+    },
+    "endpoints": {
+      "type": "array",
+      "description": "List of custom HTTP endpoints that execute JavaScript code",
+      "items": {
+        "$ref": "definitions/endpoint-descriptor.schema.json"
+      }
+    }
+  },
+  "additionalProperties": false
+}
\ No newline at end of file