diff --git a/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.go b/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.go
index cef83a2..a5557ce 100644
--- a/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.go
+++ b/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.go
@@ -36,6 +36,7 @@ type Ontology struct {
 	DownloadUrl *string `protobuf:"bytes,5,opt,name=download_url,json=downloadUrl,proto3,oneof" json:"download_url,omitempty"`
 	Description *string `protobuf:"bytes,6,opt,name=description,proto3,oneof" json:"description,omitempty"`
 	LogoUrl     *string `protobuf:"bytes,7,opt,name=logo_url,json=logoUrl,proto3,oneof" json:"logo_url,omitempty"`
+	Level       *string `protobuf:"bytes,8,opt,name=level,proto3,oneof" json:"level,omitempty"`
 }
 
 func (x *Ontology) Reset() {
@@ -117,6 +118,13 @@ func (x *Ontology) GetLogoUrl() string {
 	return ""
 }
 
+func (x *Ontology) GetLevel() string {
+	if x != nil && x.Level != nil {
+		return *x.Level
+	}
+	return ""
+}
+
 type OntologySummary struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -128,6 +136,7 @@ type OntologySummary struct {
 	DownloadUrl *string `protobuf:"bytes,4,opt,name=download_url,json=downloadUrl,proto3,oneof" json:"download_url,omitempty"`
 	Description *string `protobuf:"bytes,5,opt,name=description,proto3,oneof" json:"description,omitempty"`
 	LogoUrl     *string `protobuf:"bytes,6,opt,name=logo_url,json=logoUrl,proto3,oneof" json:"logo_url,omitempty"`
+	Level       *string `protobuf:"bytes,7,opt,name=level,proto3,oneof" json:"level,omitempty"`
 }
 
 func (x *OntologySummary) Reset() {
@@ -202,6 +211,13 @@ func (x *OntologySummary) GetLogoUrl() string {
 	return ""
 }
 
+func (x *OntologySummary) GetLevel() string {
+	if x != nil && x.Level != nil {
+		return *x.Level
+	}
+	return ""
+}
+
 type OntologyCreation struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -213,6 +229,7 @@ type OntologyCreation struct {
 	DownloadUrl *string `protobuf:"bytes,4,opt,name=download_url,json=downloadUrl,proto3,oneof" json:"download_url,omitempty"`
 	Description *string `protobuf:"bytes,5,opt,name=description,proto3,oneof" json:"description,omitempty"`
 	LogoUrl     *string `protobuf:"bytes,6,opt,name=logo_url,json=logoUrl,proto3,oneof" json:"logo_url,omitempty"`
+	Level       *string `protobuf:"bytes,7,opt,name=level,proto3,oneof" json:"level,omitempty"`
 }
 
 func (x *OntologyCreation) Reset() {
@@ -287,6 +304,13 @@ func (x *OntologyCreation) GetLogoUrl() string {
 	return ""
 }
 
+func (x *OntologyCreation) GetLevel() string {
+	if x != nil && x.Level != nil {
+		return *x.Level
+	}
+	return ""
+}
+
 type OntologyUpdate struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -299,6 +323,7 @@ type OntologyUpdate struct {
 	DownloadUrl *string           `protobuf:"bytes,5,opt,name=download_url,json=downloadUrl,proto3,oneof" json:"download_url,omitempty"`
 	Description *string           `protobuf:"bytes,6,opt,name=description,proto3,oneof" json:"description,omitempty"`
 	LogoUrl     *string           `protobuf:"bytes,7,opt,name=logo_url,json=logoUrl,proto3,oneof" json:"logo_url,omitempty"`
+	Level       *string           `protobuf:"bytes,8,opt,name=level,proto3,oneof" json:"level,omitempty"`
 	FieldMask   *common.FieldMask `protobuf:"bytes,100,opt,name=field_mask,json=fieldMask,proto3" json:"field_mask,omitempty"`
 }
 
@@ -381,6 +406,13 @@ func (x *OntologyUpdate) GetLogoUrl() string {
 	return ""
 }
 
+func (x *OntologyUpdate) GetLevel() string {
+	if x != nil && x.Level != nil {
+		return *x.Level
+	}
+	return ""
+}
+
 func (x *OntologyUpdate) GetFieldMask() *common.FieldMask {
 	if x != nil {
 		return x.FieldMask
@@ -910,7 +942,7 @@ var file_ontology_proto_rawDesc = []byte{
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@@ -926,183 +958,192 @@ var file_ontology_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.validate.go b/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.validate.go
index 9419c91..d19d5ce 100644
--- a/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.validate.go
+++ b/go/github.com/jupyter-naas/naas-models/go/ontology/ontology.pb.validate.go
@@ -108,6 +108,10 @@ func (m *Ontology) validate(all bool) error {
 		// no validation rules for LogoUrl
 	}
 
+	if m.Level != nil {
+		// no validation rules for Level
+	}
+
 	if len(errors) > 0 {
 		return OntologyMultiError(errors)
 	}
@@ -259,6 +263,10 @@ func (m *OntologySummary) validate(all bool) error {
 		// no validation rules for LogoUrl
 	}
 
+	if m.Level != nil {
+		// no validation rules for Level
+	}
+
 	if len(errors) > 0 {
 		return OntologySummaryMultiError(errors)
 	}
@@ -413,6 +421,10 @@ func (m *OntologyCreation) validate(all bool) error {
 		// no validation rules for LogoUrl
 	}
 
+	if m.Level != nil {
+		// no validation rules for Level
+	}
+
 	if len(errors) > 0 {
 		return OntologyCreationMultiError(errors)
 	}
@@ -598,6 +610,10 @@ func (m *OntologyUpdate) validate(all bool) error {
 		// no validation rules for LogoUrl
 	}
 
+	if m.Level != nil {
+		// no validation rules for Level
+	}
+
 	if len(errors) > 0 {
 		return OntologyUpdateMultiError(errors)
 	}
diff --git a/protos/ontology.proto b/protos/ontology.proto
index 567121d..5eba901 100644
--- a/protos/ontology.proto
+++ b/protos/ontology.proto
@@ -18,6 +18,7 @@ message Ontology {
     optional string download_url = 5;
     optional string description = 6;
     optional string logo_url = 7;
+    optional string level = 8;
 }
 
 message OntologySummary {
@@ -27,6 +28,7 @@ message OntologySummary {
     optional string download_url = 4;
     optional string description = 5;
     optional string logo_url = 6;
+    optional string level = 7;
 }
 
 message OntologyCreation {
@@ -36,6 +38,7 @@ message OntologyCreation {
     optional string download_url = 4;
     optional string description = 5;
     optional string logo_url = 6;
+    optional string level = 7;
 }
 
 message OntologyUpdate {
@@ -46,6 +49,7 @@ message OntologyUpdate {
     optional string download_url = 5;
     optional string description = 6;
     optional string logo_url = 7;
+    optional string level = 8;
 
     common.FieldMask field_mask = 100;
 }
diff --git a/python/naas_models/ontology_pb2.py b/python/naas_models/ontology_pb2.py
index f0243b4..85998d4 100644
--- a/python/naas_models/ontology_pb2.py
+++ b/python/naas_models/ontology_pb2.py
@@ -18,7 +18,7 @@
 import common_pb2 as common__pb2
 
 
-DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0eontology.proto\x12\x08ontology\x1a\x0evalidate.proto\x1a\x12p2p_validate.proto\x1a\x0c\x65rrors.proto\x1a\x0c\x63ommon.proto\"\x8e\x02\n\x08Ontology\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12#\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01H\x00\x88\x01\x01\x12\x12\n\x05label\x18\x03 \x01(\tH\x01\x88\x01\x01\x12\x13\n\x06source\x18\x04 \x01(\tH\x02\x88\x01\x01\x12\x19\n\x0c\x64ownload_url\x18\x05 \x01(\tH\x03\x88\x01\x01\x12\x18\n\x0b\x64\x65scription\x18\x06 \x01(\tH\x04\x88\x01\x01\x12\x15\n\x08logo_url\x18\x07 \x01(\tH\x05\x88\x01\x01\x42\x0f\n\r_workspace_idB\x08\n\x06_labelB\t\n\x07_sourceB\x0f\n\r_download_urlB\x0e\n\x0c_descriptionB\x0b\n\t_logo_url\"\xf5\x01\n\x0fOntologySummary\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12#\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01H\x00\x88\x01\x01\x12\x12\n\x05label\x18\x03 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\x01(\x05\x42\x0f\xfa\x42\x04\x1a\x02(\x00\x8a\x43\x05\x1a\x03\xa8\x01\x01\"z\n\x14OntologyListResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12-\n\nontologies\x18\x02 \x03(\x0b\x32\x19.ontology.OntologySummaryB\x08\n\x06_error\"`\n\x12OntologyGetRequest\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12#\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01H\x00\x88\x01\x01\x42\x0f\n\r_workspace_id\"\x82\x01\n\x13OntologyGetResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12)\n\x08ontology\x18\x02 \x01(\x0b\x32\x12.ontology.OntologyH\x01\x88\x01\x01\x42\x08\n\x06_errorB\x0b\n\t_ontology\"G\n\x17OntologyCreationRequest\x12,\n\x08ontology\x18\x01 \x01(\x0b\x32\x1a.ontology.OntologyCreation\"\x87\x01\n\x18OntologyCreationResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12)\n\x08ontology\x18\x02 \x01(\x0b\x32\x12.ontology.OntologyH\x01\x88\x01\x01\x42\x08\n\x06_errorB\x0b\n\t_ontology\"C\n\x15OntologyUpdateRequest\x12*\n\x08ontology\x18\x01 \x01(\x0b\x32\x18.ontology.OntologyUpdate\"\x85\x01\n\x16OntologyUpdateResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12)\n\x08ontology\x18\x02 \x01(\x0b\x32\x12.ontology.OntologyH\x01\x88\x01\x01\x42\x08\n\x06_errorB\x0b\n\t_ontology\"O\n\x17OntologyDeletionRequest\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12\x1e\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\"O\n\x18OntologyDeletionResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x42\x08\n\x06_error2\x95\x03\n\x0fOntologyService\x12G\n\x04List\x12\x1d.ontology.OntologyListRequest\x1a\x1e.ontology.OntologyListResponse\"\x00\x12\x44\n\x03Get\x12\x1c.ontology.OntologyGetRequest\x1a\x1d.ontology.OntologyGetResponse\"\x00\x12Q\n\x06\x43reate\x12!.ontology.OntologyCreationRequest\x1a\".ontology.OntologyCreationResponse\"\x00\x12M\n\x06Update\x12\x1f.ontology.OntologyUpdateRequest\x1a .ontology.OntologyUpdateResponse\"\x00\x12Q\n\x06\x44\x65lete\x12!.ontology.OntologyDeletionRequest\x1a\".ontology.OntologyDeletionResponse\"\x00\x42\x31Z/github.com/jupyter-naas/naas-models/go/ontologyb\x06proto3')
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0eontology.proto\x12\x08ontology\x1a\x0evalidate.proto\x1a\x12p2p_validate.proto\x1a\x0c\x65rrors.proto\x1a\x0c\x63ommon.proto\"\xac\x02\n\x08Ontology\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12#\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01H\x00\x88\x01\x01\x12\x12\n\x05label\x18\x03 \x01(\tH\x01\x88\x01\x01\x12\x13\n\x06source\x18\x04 \x01(\tH\x02\x88\x01\x01\x12\x19\n\x0c\x64ownload_url\x18\x05 \x01(\tH\x03\x88\x01\x01\x12\x18\n\x0b\x64\x65scription\x18\x06 \x01(\tH\x04\x88\x01\x01\x12\x15\n\x08logo_url\x18\x07 \x01(\tH\x05\x88\x01\x01\x12\x12\n\x05level\x18\x08 \x01(\tH\x06\x88\x01\x01\x42\x0f\n\r_workspace_idB\x08\n\x06_labelB\t\n\x07_sourceB\x0f\n\r_download_urlB\x0e\n\x0c_descriptionB\x0b\n\t_logo_urlB\x08\n\x06_level\"\x93\x02\n\x0fOntologySummary\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12#\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01H\x00\x88\x01\x01\x12\x12\n\x05label\x18\x03 \x01(\tH\x01\x88\x01\x01\x12\x19\n\x0c\x64ownload_url\x18\x04 \x01(\tH\x02\x88\x01\x01\x12\x18\n\x0b\x64\x65scription\x18\x05 \x01(\tH\x03\x88\x01\x01\x12\x15\n\x08logo_url\x18\x06 \x01(\tH\x04\x88\x01\x01\x12\x12\n\x05level\x18\x07 \x01(\tH\x05\x88\x01\x01\x42\x0f\n\r_workspace_idB\x08\n\x06_labelB\x0f\n\r_download_urlB\x0e\n\x0c_descriptionB\x0b\n\t_logo_urlB\x08\n\x06_level\"\x96\x02\n\x10OntologyCreation\x12&\n\x0cworkspace_id\x18\x01 \x01(\tB\x10\xfa\x42\x05r\x03\xb0\x01\x01\x8a\x43\x05r\x03\x98\x02\x01\x12!\n\x05label\x18\x02 \x01(\tB\x12\xfa\x42\x07r\x05\x10\x01\x18\xff\x01\x8a\x43\x05r\x03\x98\x02\x01\x12\x1f\n\x06source\x18\x03 \x01(\tB\x0f\xfa\x42\x04r\x02\x10\x01\x8a\x43\x05r\x03\x98\x02\x01\x12\x19\n\x0c\x64ownload_url\x18\x04 \x01(\tH\x00\x88\x01\x01\x12\x18\n\x0b\x64\x65scription\x18\x05 \x01(\tH\x01\x88\x01\x01\x12\x15\n\x08logo_url\x18\x06 \x01(\tH\x02\x88\x01\x01\x12\x12\n\x05level\x18\x07 \x01(\tH\x03\x88\x01\x01\x42\x0f\n\r_download_urlB\x0e\n\x0c_descriptionB\x0b\n\t_logo_urlB\x08\n\x06_level\"\xe1\x02\n\x0eOntologyUpdate\x12\x1c\n\x02id\x18\x01 \x01(\tB\x10\xfa\x42\x05r\x03\xb0\x01\x01\x8a\x43\x05r\x03\x98\x02\x01\x12#\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01H\x00\x88\x01\x01\x12\x12\n\x05label\x18\x03 \x01(\tH\x01\x88\x01\x01\x12\x13\n\x06source\x18\x04 \x01(\tH\x02\x88\x01\x01\x12\x19\n\x0c\x64ownload_url\x18\x05 \x01(\tH\x03\x88\x01\x01\x12\x18\n\x0b\x64\x65scription\x18\x06 \x01(\tH\x04\x88\x01\x01\x12\x15\n\x08logo_url\x18\x07 \x01(\tH\x05\x88\x01\x01\x12\x12\n\x05level\x18\x08 \x01(\tH\x06\x88\x01\x01\x12%\n\nfield_mask\x18\x64 \x01(\x0b\x32\x11.common.FieldMaskB\x0f\n\r_workspace_idB\x08\n\x06_labelB\t\n\x07_sourceB\x0f\n\r_download_urlB\x0e\n\x0c_descriptionB\x0b\n\t_logo_urlB\x08\n\x06_level\"\x89\x01\n\x13OntologyListRequest\x12&\n\x0cworkspace_id\x18\x01 \x01(\tB\x10\xfa\x42\x05r\x03\xb0\x01\x01\x8a\x43\x05r\x03\x98\x02\x01\x12$\n\tpage_size\x18\x02 \x01(\x05\x42\x11\xfa\x42\x06\x1a\x04\x18\x64(\x01\x8a\x43\x05\x1a\x03\xa8\x01\x01\x12$\n\x0bpage_number\x18\x03 \x01(\x05\x42\x0f\xfa\x42\x04\x1a\x02(\x00\x8a\x43\x05\x1a\x03\xa8\x01\x01\"z\n\x14OntologyListResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12-\n\nontologies\x18\x02 \x03(\x0b\x32\x19.ontology.OntologySummaryB\x08\n\x06_error\"`\n\x12OntologyGetRequest\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12#\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01H\x00\x88\x01\x01\x42\x0f\n\r_workspace_id\"\x82\x01\n\x13OntologyGetResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12)\n\x08ontology\x18\x02 \x01(\x0b\x32\x12.ontology.OntologyH\x01\x88\x01\x01\x42\x08\n\x06_errorB\x0b\n\t_ontology\"G\n\x17OntologyCreationRequest\x12,\n\x08ontology\x18\x01 \x01(\x0b\x32\x1a.ontology.OntologyCreation\"\x87\x01\n\x18OntologyCreationResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12)\n\x08ontology\x18\x02 \x01(\x0b\x32\x12.ontology.OntologyH\x01\x88\x01\x01\x42\x08\n\x06_errorB\x0b\n\t_ontology\"C\n\x15OntologyUpdateRequest\x12*\n\x08ontology\x18\x01 \x01(\x0b\x32\x18.ontology.OntologyUpdate\"\x85\x01\n\x16OntologyUpdateResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x12)\n\x08ontology\x18\x02 \x01(\x0b\x32\x12.ontology.OntologyH\x01\x88\x01\x01\x42\x08\n\x06_errorB\x0b\n\t_ontology\"O\n\x17OntologyDeletionRequest\x12\x14\n\x02id\x18\x01 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\x12\x1e\n\x0cworkspace_id\x18\x02 \x01(\tB\x08\xfa\x42\x05r\x03\xb0\x01\x01\"O\n\x18OntologyDeletionResponse\x12)\n\x05\x65rror\x18\x01 \x01(\x0b\x32\x15.errors.ErrorResponseH\x00\x88\x01\x01\x42\x08\n\x06_error2\x95\x03\n\x0fOntologyService\x12G\n\x04List\x12\x1d.ontology.OntologyListRequest\x1a\x1e.ontology.OntologyListResponse\"\x00\x12\x44\n\x03Get\x12\x1c.ontology.OntologyGetRequest\x1a\x1d.ontology.OntologyGetResponse\"\x00\x12Q\n\x06\x43reate\x12!.ontology.OntologyCreationRequest\x1a\".ontology.OntologyCreationResponse\"\x00\x12M\n\x06Update\x12\x1f.ontology.OntologyUpdateRequest\x1a .ontology.OntologyUpdateResponse\"\x00\x12Q\n\x06\x44\x65lete\x12!.ontology.OntologyDeletionRequest\x1a\".ontology.OntologyDeletionResponse\"\x00\x42\x31Z/github.com/jupyter-naas/naas-models/go/ontologyb\x06proto3')
 
 _globals = globals()
 _builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
@@ -59,33 +59,33 @@
   _globals['_ONTOLOGYDELETIONREQUEST'].fields_by_name['workspace_id']._loaded_options = None
   _globals['_ONTOLOGYDELETIONREQUEST'].fields_by_name['workspace_id']._serialized_options = b'\372B\005r\003\260\001\001'
   _globals['_ONTOLOGY']._serialized_start=93
-  _globals['_ONTOLOGY']._serialized_end=363
-  _globals['_ONTOLOGYSUMMARY']._serialized_start=366
-  _globals['_ONTOLOGYSUMMARY']._serialized_end=611
-  _globals['_ONTOLOGYCREATION']._serialized_start=614
-  _globals['_ONTOLOGYCREATION']._serialized_end=862
-  _globals['_ONTOLOGYUPDATE']._serialized_start=865
-  _globals['_ONTOLOGYUPDATE']._serialized_end=1188
-  _globals['_ONTOLOGYLISTREQUEST']._serialized_start=1191
-  _globals['_ONTOLOGYLISTREQUEST']._serialized_end=1328
-  _globals['_ONTOLOGYLISTRESPONSE']._serialized_start=1330
-  _globals['_ONTOLOGYLISTRESPONSE']._serialized_end=1452
-  _globals['_ONTOLOGYGETREQUEST']._serialized_start=1454
-  _globals['_ONTOLOGYGETREQUEST']._serialized_end=1550
-  _globals['_ONTOLOGYGETRESPONSE']._serialized_start=1553
-  _globals['_ONTOLOGYGETRESPONSE']._serialized_end=1683
-  _globals['_ONTOLOGYCREATIONREQUEST']._serialized_start=1685
-  _globals['_ONTOLOGYCREATIONREQUEST']._serialized_end=1756
-  _globals['_ONTOLOGYCREATIONRESPONSE']._serialized_start=1759
-  _globals['_ONTOLOGYCREATIONRESPONSE']._serialized_end=1894
-  _globals['_ONTOLOGYUPDATEREQUEST']._serialized_start=1896
-  _globals['_ONTOLOGYUPDATEREQUEST']._serialized_end=1963
-  _globals['_ONTOLOGYUPDATERESPONSE']._serialized_start=1966
-  _globals['_ONTOLOGYUPDATERESPONSE']._serialized_end=2099
-  _globals['_ONTOLOGYDELETIONREQUEST']._serialized_start=2101
-  _globals['_ONTOLOGYDELETIONREQUEST']._serialized_end=2180
-  _globals['_ONTOLOGYDELETIONRESPONSE']._serialized_start=2182
-  _globals['_ONTOLOGYDELETIONRESPONSE']._serialized_end=2261
-  _globals['_ONTOLOGYSERVICE']._serialized_start=2264
-  _globals['_ONTOLOGYSERVICE']._serialized_end=2669
+  _globals['_ONTOLOGY']._serialized_end=393
+  _globals['_ONTOLOGYSUMMARY']._serialized_start=396
+  _globals['_ONTOLOGYSUMMARY']._serialized_end=671
+  _globals['_ONTOLOGYCREATION']._serialized_start=674
+  _globals['_ONTOLOGYCREATION']._serialized_end=952
+  _globals['_ONTOLOGYUPDATE']._serialized_start=955
+  _globals['_ONTOLOGYUPDATE']._serialized_end=1308
+  _globals['_ONTOLOGYLISTREQUEST']._serialized_start=1311
+  _globals['_ONTOLOGYLISTREQUEST']._serialized_end=1448
+  _globals['_ONTOLOGYLISTRESPONSE']._serialized_start=1450
+  _globals['_ONTOLOGYLISTRESPONSE']._serialized_end=1572
+  _globals['_ONTOLOGYGETREQUEST']._serialized_start=1574
+  _globals['_ONTOLOGYGETREQUEST']._serialized_end=1670
+  _globals['_ONTOLOGYGETRESPONSE']._serialized_start=1673
+  _globals['_ONTOLOGYGETRESPONSE']._serialized_end=1803
+  _globals['_ONTOLOGYCREATIONREQUEST']._serialized_start=1805
+  _globals['_ONTOLOGYCREATIONREQUEST']._serialized_end=1876
+  _globals['_ONTOLOGYCREATIONRESPONSE']._serialized_start=1879
+  _globals['_ONTOLOGYCREATIONRESPONSE']._serialized_end=2014
+  _globals['_ONTOLOGYUPDATEREQUEST']._serialized_start=2016
+  _globals['_ONTOLOGYUPDATEREQUEST']._serialized_end=2083
+  _globals['_ONTOLOGYUPDATERESPONSE']._serialized_start=2086
+  _globals['_ONTOLOGYUPDATERESPONSE']._serialized_end=2219
+  _globals['_ONTOLOGYDELETIONREQUEST']._serialized_start=2221
+  _globals['_ONTOLOGYDELETIONREQUEST']._serialized_end=2300
+  _globals['_ONTOLOGYDELETIONRESPONSE']._serialized_start=2302
+  _globals['_ONTOLOGYDELETIONRESPONSE']._serialized_end=2381
+  _globals['_ONTOLOGYSERVICE']._serialized_start=2384
+  _globals['_ONTOLOGYSERVICE']._serialized_end=2789
 # @@protoc_insertion_point(module_scope)
diff --git a/python/naas_models/pydantic/ontology_p2p.py b/python/naas_models/pydantic/ontology_p2p.py
index a98695b..3b0cbcf 100644
--- a/python/naas_models/pydantic/ontology_p2p.py
+++ b/python/naas_models/pydantic/ontology_p2p.py
@@ -19,6 +19,7 @@ class Ontology(BaseModel):
     download_url: typing.Optional[str] = Field(default="") 
     description: typing.Optional[str] = Field(default="") 
     logo_url: typing.Optional[str] = Field(default="") 
+    level: typing.Optional[str] = Field(default="") 
 
 class OntologySummary(BaseModel):
     id: UUID = Field(default="") 
@@ -27,6 +28,7 @@ class OntologySummary(BaseModel):
     download_url: typing.Optional[str] = Field(default="") 
     description: typing.Optional[str] = Field(default="") 
     logo_url: typing.Optional[str] = Field(default="") 
+    level: typing.Optional[str] = Field(default="") 
 
 class OntologyCreation(BaseModel):
     workspace_id: UUID = Field() 
@@ -35,6 +37,7 @@ class OntologyCreation(BaseModel):
     download_url: typing.Optional[str] = Field(default="") 
     description: typing.Optional[str] = Field(default="") 
     logo_url: typing.Optional[str] = Field(default="") 
+    level: typing.Optional[str] = Field(default="") 
 
 class OntologyUpdate(BaseModel):
     id: UUID = Field() 
@@ -44,6 +47,7 @@ class OntologyUpdate(BaseModel):
     download_url: typing.Optional[str] = Field(default="") 
     description: typing.Optional[str] = Field(default="") 
     logo_url: typing.Optional[str] = Field(default="") 
+    level: typing.Optional[str] = Field(default="") 
     field_mask: FieldMask = Field() 
 
 class OntologyListRequest(BaseModel):