# 即时通讯 API (/zh-CN/solutions/chatroom/sdk/reference/im-api)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

本页介绍语聊 PaaS 方案中高频调用的即时通讯 IM API。

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| API | 描述 |
| --- | --- |
| [loginWithToken](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_java/v1.1.0/classio_1_1agora_1_1chat_1_1_chat_client.html#ac2b19ffdcd879b5f239baacbaa09423b) | 登录即时通讯系统。 |
| [joinChatRoom](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_java/v1.1.0/classio_1_1agora_1_1chat_1_1_chat_room_manager.html#a895dbd6d0217ba08bcf2dbb6cf441591) | 加入聊天室。 |
| [leaveChatRoom](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_java/v1.1.0/classio_1_1agora_1_1chat_1_1_chat_room_manager.html#a4f2c430782206971480c73a49311b1437) | 离开聊天室。 |
| [asyncDestroyChatRoom](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_java/v1.1.0/classio_1_1agora_1_1chat_1_1_chat_room_manager.html?transId=194274c0-bee4-11ed-b167-a39cc89dc96e#a0d50d2e34d9992fc3f8ea1c82e2db1a) | 销毁聊天室。 |
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| API | 描述 |
| --- | --- |
| [loginWithUsername:token:completion:](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_oc/v1.1.0/interface_agora_chat_client.html#ad1f4dbc685867ed236fcb57c2d29c2b0) | 登录即时通讯系统。 |
| [joinChatRoom](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_oc/v1.1.0/protocol_i_agora_chatroom_manager-p.html#ad8d19bd36e60c8af8d04c1f8b4daa2f0) | 加入聊天室。 |
| [leaveChatroom:completion:](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_oc/v1.1.0/protocol_i_agora_chatroom_manager-p.html#ae9b671ece1a36ad8ac26375d91755467) | 离开聊天室。 |
| [destroyChatroom:](https://docs-preprod.agora.io/cn/agora-chat/API%20Reference/im_oc/v1.1.0/protocol_i_agora_chatroom_manager-p.html#a1e3a6bacf44a96ff37b34d2068c84386) | 销毁聊天室。 |
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