diff --git a/proto/tokens/v1/tokens_v1.proto b/proto/tokens/v1/tokens_v1.proto
index 560c123..9daf4ed 100644
--- a/proto/tokens/v1/tokens_v1.proto
+++ b/proto/tokens/v1/tokens_v1.proto
@@ -20,6 +20,8 @@ service TokensService {
   rpc GetToken (GetTokenRequest) returns (GetTokenResponse) {}
   // List all existing tokens
   rpc ListTokens (google.protobuf.Empty) returns (stream ListTokensResponse) {}
+  // List all available permissions
+  rpc ListPermissions (google.protobuf.Empty) returns (stream ListPermissionsResponse) {}
 }
 
 message TokenMetadata {
@@ -92,3 +94,15 @@ message ListTokensResponse {
   TokenMetadata token_metadata = 2;
   TokenPermissions token_permissions = 3;
 }
+
+message MethodList {
+  repeated string methods = 1;
+}
+
+message Permissions {
+  map<string, MethodList> availabie_permissions = 1;
+}
+
+message ListPermissionsResponse {
+  Permissions permissions = 1;
+}