001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau.bean.mcp.v20250618;
018
019/**
020 * Role for {@link PromptMessage} entries (MCP wire uses lowercase strings).
021 */
022public enum Role {
023
024   /** User role. */
025   USER("user"),
026
027   /** Assistant role. */
028   ASSISTANT("assistant"),
029
030   /** System role. */
031   SYSTEM("system"),
032
033   /** Tool role. */
034   TOOL("tool");
035
036   private final String wire;
037
038   Role(String wire) {
039      this.wire = wire;
040   }
041
042   /**
043    * Wire token for JSON payloads.
044    *
045    * @return Lowercase MCP role string.
046    */
047   public String toWire() {
048      return wire;
049   }
050
051   @Override /* Object */
052   public String toString() {
053      return wire;
054   }
055}