diff --git a/e2e/instance_test.go b/e2e/instance_test.go
index 3a96bb349..eeda8287a 100644
--- a/e2e/instance_test.go
+++ b/e2e/instance_test.go
@@ -45,7 +45,11 @@ func testInstance(t *testing.T) {
 	})
 
 	t.Run("list", func(t *testing.T) {
-		resp, err := client.InstanceClient.List(context.Background(), &pb.ListInstanceRequest{ServiceHash: testServiceHash})
+		resp, err := client.InstanceClient.List(context.Background(), &pb.ListInstanceRequest{
+			Filter: &pb.ListInstanceRequest_Filter{
+				ServiceHash: testServiceHash,
+			},
+		})
 		require.NoError(t, err)
 		require.Len(t, resp.Instances, 1)
 		require.Equal(t, testServiceHash, resp.Instances[0].ServiceHash)
@@ -58,7 +62,11 @@ func testDeleteInstance(t *testing.T) {
 	_, err := client.InstanceClient.Delete(ctx, &pb.DeleteInstanceRequest{Hash: testInstanceHash})
 	require.NoError(t, err)
 
-	resp, err := client.InstanceClient.List(context.Background(), &pb.ListInstanceRequest{ServiceHash: testServiceHash})
+	resp, err := client.InstanceClient.List(context.Background(), &pb.ListInstanceRequest{
+		Filter: &pb.ListInstanceRequest_Filter{
+			ServiceHash: testServiceHash,
+		},
+	})
 	require.NoError(t, err)
 	require.Len(t, resp.Instances, 0)
 }
diff --git a/protobuf/api/instance.pb.go b/protobuf/api/instance.pb.go
index d13004777..ecaaecc19 100644
--- a/protobuf/api/instance.pb.go
+++ b/protobuf/api/instance.pb.go
@@ -6,6 +6,8 @@ package api
 import (
 	context "context"
 	fmt "fmt"
+	math "math"
+
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_mesg_foundation_engine_hash "github.com/mesg-foundation/engine/hash"
@@ -13,7 +15,6 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
-	math "math"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -61,11 +62,11 @@ var xxx_messageInfo_GetInstanceRequest proto.InternalMessageInfo
 
 // The request's data for the `List` API.
 type ListInstanceRequest struct {
-	// Filter by Services' hash.
-	ServiceHash          github_com_mesg_foundation_engine_hash.Hash `protobuf:"bytes,1,opt,name=serviceHash,proto3,customtype=github.com/mesg-foundation/engine/hash.Hash" json:"serviceHash"`
-	XXX_NoUnkeyedLiteral struct{}                                    `json:"-"`
-	XXX_unrecognized     []byte                                      `json:"-"`
-	XXX_sizecache        int32                                       `json:"-"`
+	// Filter used to filter a stream of executions.
+	Filter               *ListInstanceRequest_Filter `protobuf:"bytes,1,opt,name=filter,proto3" json:"filter,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                    `json:"-"`
+	XXX_unrecognized     []byte                      `json:"-"`
+	XXX_sizecache        int32                       `json:"-"`
 }
 
 func (m *ListInstanceRequest) Reset()         { *m = ListInstanceRequest{} }
@@ -92,6 +93,46 @@ func (m *ListInstanceRequest) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_ListInstanceRequest proto.InternalMessageInfo
 
+func (m *ListInstanceRequest) GetFilter() *ListInstanceRequest_Filter {
+	if m != nil {
+		return m.Filter
+	}
+	return nil
+}
+
+// Filter contains filtering criteria.
+type ListInstanceRequest_Filter struct {
+	// Service hash to filter executions.
+	ServiceHash          github_com_mesg_foundation_engine_hash.Hash `protobuf:"bytes,1,opt,name=serviceHash,proto3,customtype=github.com/mesg-foundation/engine/hash.Hash" json:"serviceHash"`
+	XXX_NoUnkeyedLiteral struct{}                                    `json:"-"`
+	XXX_unrecognized     []byte                                      `json:"-"`
+	XXX_sizecache        int32                                       `json:"-"`
+}
+
+func (m *ListInstanceRequest_Filter) Reset()         { *m = ListInstanceRequest_Filter{} }
+func (m *ListInstanceRequest_Filter) String() string { return proto.CompactTextString(m) }
+func (*ListInstanceRequest_Filter) ProtoMessage()    {}
+func (*ListInstanceRequest_Filter) Descriptor() ([]byte, []int) {
+	return fileDescriptor_71d44b8f4a870f63, []int{1, 0}
+}
+func (m *ListInstanceRequest_Filter) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ListInstanceRequest_Filter.Unmarshal(m, b)
+}
+func (m *ListInstanceRequest_Filter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ListInstanceRequest_Filter.Marshal(b, m, deterministic)
+}
+func (m *ListInstanceRequest_Filter) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ListInstanceRequest_Filter.Merge(m, src)
+}
+func (m *ListInstanceRequest_Filter) XXX_Size() int {
+	return xxx_messageInfo_ListInstanceRequest_Filter.Size(m)
+}
+func (m *ListInstanceRequest_Filter) XXX_DiscardUnknown() {
+	xxx_messageInfo_ListInstanceRequest_Filter.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ListInstanceRequest_Filter proto.InternalMessageInfo
+
 // The response's data for the `List` API.
 type ListInstanceResponse struct {
 	// List of instances that match the request's filters.
@@ -283,6 +324,7 @@ var xxx_messageInfo_DeleteInstanceResponse proto.InternalMessageInfo
 func init() {
 	proto.RegisterType((*GetInstanceRequest)(nil), "mesg.api.GetInstanceRequest")
 	proto.RegisterType((*ListInstanceRequest)(nil), "mesg.api.ListInstanceRequest")
+	proto.RegisterType((*ListInstanceRequest_Filter)(nil), "mesg.api.ListInstanceRequest.Filter")
 	proto.RegisterType((*ListInstanceResponse)(nil), "mesg.api.ListInstanceResponse")
 	proto.RegisterType((*CreateInstanceRequest)(nil), "mesg.api.CreateInstanceRequest")
 	proto.RegisterType((*CreateInstanceResponse)(nil), "mesg.api.CreateInstanceResponse")
@@ -293,32 +335,34 @@ func init() {
 func init() { proto.RegisterFile("protobuf/api/instance.proto", fileDescriptor_71d44b8f4a870f63) }
 
 var fileDescriptor_71d44b8f4a870f63 = []byte{
-	// 400 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x53, 0xcd, 0x8e, 0xd3, 0x30,
-	0x10, 0x4e, 0x1a, 0x58, 0x75, 0x67, 0x39, 0x20, 0xb3, 0xac, 0xa2, 0x40, 0xdb, 0xc8, 0xa7, 0x48,
-	0x08, 0x47, 0x6a, 0x8f, 0xdc, 0x4a, 0xa5, 0x16, 0x04, 0x97, 0x48, 0x5c, 0x90, 0x38, 0xb8, 0xed,
-	0x34, 0xb1, 0xd4, 0xda, 0xa1, 0x76, 0x2a, 0x71, 0xe3, 0x89, 0x78, 0x0e, 0x9e, 0x81, 0x43, 0x9f,
-	0x05, 0xc5, 0xe9, 0x4f, 0x68, 0xd3, 0x13, 0xd5, 0xde, 0xec, 0xf1, 0xcc, 0x37, 0xdf, 0x37, 0xf3,
-	0x19, 0x5e, 0xe5, 0x6b, 0x65, 0xd4, 0xb4, 0x58, 0xc4, 0x3c, 0x17, 0xb1, 0x90, 0xda, 0x70, 0x39,
-	0x43, 0x66, 0xa3, 0xa4, 0xbd, 0x42, 0x9d, 0x32, 0x9e, 0x8b, 0x80, 0xa6, 0x2a, 0x55, 0xf1, 0x21,
-	0xb7, 0xbc, 0xd9, 0x8b, 0x3d, 0x55, 0xd9, 0x41, 0xe7, 0xf0, 0x6c, 0x7e, 0xe4, 0xa8, 0x4f, 0xc0,
-	0xe8, 0x37, 0x20, 0x63, 0x34, 0x1f, 0x76, 0xc1, 0x04, 0xbf, 0x17, 0xa8, 0x0d, 0x19, 0xc3, 0x93,
-	0x8c, 0xeb, 0xcc, 0x77, 0x43, 0x37, 0x7a, 0x36, 0x1c, 0xfc, 0xde, 0xf6, 0x9c, 0x3f, 0xdb, 0xde,
-	0x9b, 0x54, 0x98, 0xac, 0x98, 0xb2, 0x99, 0x5a, 0xc5, 0x25, 0x87, 0xb7, 0x0b, 0x55, 0xc8, 0x39,
-	0x37, 0x42, 0xc9, 0x18, 0x65, 0x2a, 0x24, 0xc6, 0x65, 0x15, 0x9b, 0x70, 0x9d, 0x25, 0x16, 0x80,
-	0x2e, 0xe1, 0xc5, 0x27, 0xa1, 0xcf, 0xf0, 0xbf, 0xc0, 0x9d, 0xc6, 0xf5, 0x46, 0xcc, 0x70, 0xf2,
-	0x9f, 0x6d, 0xea, 0x38, 0xf4, 0x23, 0xdc, 0xff, 0xdb, 0x4d, 0xe7, 0x4a, 0x6a, 0x24, 0x7d, 0xb8,
-	0xdd, 0xcb, 0xd6, 0xbe, 0x1b, 0x7a, 0xd1, 0x5d, 0xff, 0x9e, 0xd9, 0x29, 0xda, 0x99, 0xb0, 0x43,
-	0xc1, 0x31, 0x8d, 0xfe, 0x74, 0xe1, 0xe5, 0xfb, 0x35, 0x72, 0x83, 0x8f, 0x43, 0x9e, 0x3c, 0x07,
-	0x0f, 0xe5, 0xc6, 0x6f, 0x85, 0x5e, 0x74, 0x9b, 0x94, 0x47, 0xca, 0xe1, 0xe1, 0x94, 0xc1, 0x4e,
-	0xd0, 0xd5, 0xf6, 0x53, 0xaa, 0x1c, 0xe1, 0x12, 0xcf, 0x55, 0x5e, 0xab, 0x05, 0xe9, 0x02, 0xcc,
-	0x6d, 0x87, 0x11, 0x37, 0xdc, 0x6f, 0x85, 0x6e, 0xd4, 0x4e, 0x6a, 0x11, 0xea, 0xc3, 0xc3, 0x29,
-	0x83, 0x4a, 0x65, 0xff, 0x57, 0x0b, 0xda, 0xfb, 0x20, 0x79, 0x07, 0xde, 0x18, 0x0d, 0x79, 0xcd,
-	0xf6, 0xee, 0x67, 0xe7, 0xbe, 0x0d, 0x1a, 0xb7, 0x4a, 0x9d, 0x52, 0x4c, 0x69, 0x0c, 0xd2, 0x39,
-	0x56, 0x37, 0xd8, 0x32, 0xe8, 0x5e, 0x7a, 0xae, 0x08, 0x51, 0x87, 0x7c, 0x86, 0x9b, 0x6a, 0x25,
-	0xa4, 0x77, 0xcc, 0x6d, 0xb4, 0x49, 0x10, 0x5e, 0x4e, 0xa8, 0xc3, 0x55, 0xda, 0xeb, 0x70, 0x8d,
-	0xfb, 0xa8, 0xc3, 0x35, 0x8f, 0x8b, 0x3a, 0xc3, 0xa7, 0x5f, 0x3d, 0x9e, 0x8b, 0xe9, 0x8d, 0xfd,
-	0xda, 0x83, 0xbf, 0x01, 0x00, 0x00, 0xff, 0xff, 0xb0, 0x4a, 0xfe, 0x8c, 0x46, 0x04, 0x00, 0x00,
+	// 432 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x54, 0xcd, 0x6e, 0xd4, 0x30,
+	0x10, 0x4e, 0x36, 0x10, 0x6d, 0x67, 0x39, 0x20, 0x53, 0xaa, 0x28, 0xd0, 0x6e, 0x64, 0x71, 0x88,
+	0x84, 0x70, 0xa4, 0xf4, 0x08, 0xa7, 0x52, 0xb1, 0x05, 0xc1, 0x25, 0x12, 0x17, 0x24, 0x84, 0xbc,
+	0xdb, 0xd9, 0xc4, 0x52, 0x6b, 0x87, 0xd8, 0xa9, 0xc4, 0x8d, 0x27, 0xe2, 0xc4, 0x43, 0xf0, 0x0c,
+	0x1c, 0xfa, 0x2c, 0x28, 0xce, 0xfe, 0x84, 0x6c, 0xca, 0x85, 0xf6, 0x66, 0x8f, 0xbf, 0xf9, 0xe6,
+	0xfb, 0x66, 0x26, 0x81, 0x27, 0x65, 0xa5, 0x8c, 0x9a, 0xd7, 0xcb, 0x84, 0x97, 0x22, 0x11, 0x52,
+	0x1b, 0x2e, 0x17, 0xc8, 0x6c, 0x94, 0x8c, 0x2f, 0x51, 0xe7, 0x8c, 0x97, 0x22, 0xa4, 0xb9, 0xca,
+	0x55, 0xb2, 0xc1, 0x36, 0x37, 0x7b, 0xb1, 0xa7, 0x16, 0x1d, 0x1e, 0x6e, 0x9e, 0xcd, 0xb7, 0x12,
+	0x75, 0x8f, 0x8c, 0x7e, 0x06, 0x32, 0x43, 0xf3, 0x76, 0x15, 0xcc, 0xf0, 0x6b, 0x8d, 0xda, 0x90,
+	0x19, 0xdc, 0x2b, 0xb8, 0x2e, 0x02, 0x37, 0x72, 0xe3, 0x07, 0x27, 0xc7, 0xbf, 0xae, 0xa7, 0xce,
+	0xef, 0xeb, 0xe9, 0xf3, 0x5c, 0x98, 0xa2, 0x9e, 0xb3, 0x85, 0xba, 0x4c, 0x1a, 0x0d, 0x2f, 0x96,
+	0xaa, 0x96, 0xe7, 0xdc, 0x08, 0x25, 0x13, 0x94, 0xb9, 0x90, 0x98, 0x34, 0x59, 0xec, 0x8c, 0xeb,
+	0x22, 0xb3, 0x04, 0xf4, 0xa7, 0x0b, 0x8f, 0xde, 0x0b, 0xbd, 0x53, 0xe0, 0x15, 0xf8, 0x4b, 0x71,
+	0x61, 0xb0, 0xb2, 0x25, 0x26, 0xe9, 0x33, 0xb6, 0x36, 0xc5, 0x06, 0xe0, 0xec, 0x8d, 0xc5, 0x66,
+	0xab, 0x9c, 0xf0, 0x0b, 0xf8, 0x6d, 0x84, 0x7c, 0x84, 0x89, 0xc6, 0xea, 0x4a, 0x2c, 0xf0, 0xec,
+	0x3f, 0xf5, 0x76, 0x79, 0xe8, 0x3b, 0xd8, 0xff, 0x5b, 0x86, 0x2e, 0x95, 0xd4, 0x48, 0x52, 0xd8,
+	0x5b, 0xf7, 0x4f, 0x07, 0x6e, 0xe4, 0xc5, 0x93, 0x74, 0xbf, 0x55, 0x6e, 0x9b, 0xcb, 0x36, 0x09,
+	0x5b, 0x18, 0xfd, 0xee, 0xc2, 0xe3, 0xd7, 0x15, 0x72, 0x83, 0xfd, 0x26, 0xdc, 0x8d, 0x78, 0xf2,
+	0x10, 0x3c, 0x94, 0x57, 0xc1, 0x28, 0xf2, 0xe2, 0xbd, 0xac, 0x39, 0x52, 0x0e, 0x07, 0x7d, 0x05,
+	0x2b, 0x43, 0xb7, 0x36, 0xe8, 0xc6, 0xe5, 0x29, 0x5e, 0xe0, 0xae, 0xcb, 0xdb, 0x2a, 0x41, 0x8e,
+	0x00, 0xce, 0x6d, 0x85, 0x53, 0x6e, 0x78, 0x30, 0x8a, 0xdc, 0x78, 0x9c, 0x75, 0x22, 0x34, 0x80,
+	0x83, 0xbe, 0x82, 0xd6, 0x65, 0xfa, 0x63, 0x04, 0xe3, 0x75, 0x90, 0xbc, 0x04, 0x6f, 0x86, 0x86,
+	0x3c, 0xdd, 0x6e, 0xdc, 0xee, 0x07, 0x10, 0x0e, 0x4e, 0x95, 0x3a, 0x8d, 0x99, 0x66, 0x31, 0xc8,
+	0xe1, 0x3f, 0xf7, 0x35, 0x3c, 0xba, 0xe9, 0xb9, 0x15, 0x44, 0x1d, 0xf2, 0x01, 0xfc, 0x76, 0x24,
+	0x64, 0xba, 0xc5, 0x0e, 0xae, 0x49, 0x18, 0xdd, 0x0c, 0xe8, 0xd2, 0xb5, 0xde, 0xbb, 0x74, 0x83,
+	0xf3, 0xe8, 0xd2, 0x0d, 0xb7, 0x8b, 0x3a, 0x27, 0xf7, 0x3f, 0x79, 0xbc, 0x14, 0x73, 0xdf, 0xfe,
+	0x23, 0x8e, 0xff, 0x04, 0x00, 0x00, 0xff, 0xff, 0x91, 0xfe, 0x6f, 0x14, 0x8f, 0x04, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/protobuf/api/instance.proto b/protobuf/api/instance.proto
index e802e677b..2238f52c8 100644
--- a/protobuf/api/instance.proto
+++ b/protobuf/api/instance.proto
@@ -37,11 +37,17 @@ message GetInstanceRequest {
 
 // The request's data for the `List` API.
 message ListInstanceRequest {
-  // Filter by Services' hash.
-  bytes serviceHash = 1 [
-    (gogoproto.customtype) = "github.com/mesg-foundation/engine/hash.Hash",
-    (gogoproto.nullable) = false
-  ];
+  // Filter contains filtering criteria.
+  message Filter {
+    // Service hash to filter executions.
+    bytes serviceHash = 1 [
+      (gogoproto.customtype) = "github.com/mesg-foundation/engine/hash.Hash",
+      (gogoproto.nullable) = false
+    ];
+  }
+
+  // Filter used to filter a list of instance.
+  Filter filter = 1;
 }
 
 // The response's data for the `List` API.
diff --git a/server/grpc/api/instance.go b/server/grpc/api/instance.go
index 05b62ac6c..128b91fc0 100644
--- a/server/grpc/api/instance.go
+++ b/server/grpc/api/instance.go
@@ -21,7 +21,7 @@ func NewInstanceServer(sdk *sdk.SDK) *InstanceServer {
 
 // List instances.
 func (s *InstanceServer) List(ctx context.Context, request *protobuf_api.ListInstanceRequest) (*protobuf_api.ListInstanceResponse, error) {
-	instances, err := s.sdk.Instance.List(&instancesdk.Filter{ServiceHash: request.ServiceHash})
+	instances, err := s.sdk.Instance.List(&instancesdk.Filter{ServiceHash: request.Filter.ServiceHash})
 	if err != nil {
 		return nil, err
 	}