// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package google.cloud.agentregistry.v1;

import "google/api/field_behavior.proto";

option csharp_namespace = "Google.Cloud.AgentRegistry.V1";
option go_package = "cloud.google.com/go/agentregistry/apiv1/agentregistrypb;agentregistrypb";
option java_multiple_files = true;
option java_outer_classname = "PropertiesProto";
option java_package = "com.google.cloud.agentregistry.v1";
option php_namespace = "Google\\Cloud\\AgentRegistry\\V1";
option ruby_package = "Google::Cloud::AgentRegistry::V1";

// Represents the connection details for an Agent or MCP Server.
message Interface {
  // The protocol binding of the interface.
  enum ProtocolBinding {
    // Unspecified transport protocol.
    PROTOCOL_BINDING_UNSPECIFIED = 0;

    // JSON-RPC specification.
    JSONRPC = 1;

    // gRPC specification.
    GRPC = 2;

    // HTTP+JSON specification.
    HTTP_JSON = 3;
  }

  // Required. The destination URL.
  string url = 1 [(google.api.field_behavior) = REQUIRED];

  // Required. The protocol binding of the interface.
  ProtocolBinding protocol_binding = 2 [(google.api.field_behavior) = REQUIRED];
}