# azure-communication-chat-java

Assists with building real-time Java chat features via Azure Communication Services. Helps implement chat threads, messaging, receipts, and participant rosters.

- skill · `type=skill` · Claude Code, GitHub Copilot · ★ 3149
- Author: Microsoft
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/microsoft/skills/tree/HEAD/.github/plugins/azure-sdk-java/skills/azure-communication-chat-java/SKILL.md
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/skills/azure-communication-chat-java

## What it does

The skill provides reference implementations for the `com.azure:azure-communication-chat` library (version 1.6.0). It covers building both synchronous `ChatClient` and asynchronous `ChatAsyncClient` instances, spinning up chat threads, and sending plain text or HTML messages.

It includes patterns for participant management via `CommunicationUserIdentifier`, setting message history sharing periods, tracking read receipts, and sending typing notifications. Message deletion and thread topic updates are also covered.

Initializing the client requires an active resource endpoint along with a `CommunicationTokenCredential` holding a valid user access token.

## Requirements
- Works with: Azure

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add microsoft/skills --skill azure-communication-chat-java -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/azure-communication-chat-java/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/azure-communication-chat-java/

### Codex

**Manually: put the files in place**
- File: `.agents/skills/azure-communication-chat-java/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

**Manually: put the files in place**
- File: `.cursor/skills/azure-communication-chat-java/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install microsoft/skills azure-communication-chat-java
```

2. **Manually: put the files in place**
- File: `.github/skills/azure-communication-chat-java/SKILL.md`

### Gemini CLI

**Platform CLI**
```bash
gemini skills install https://github.com/microsoft/skills --path .github/plugins/azure-sdk-java/skills/azure-communication-chat-java
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/azure-communication-chat-java/SKILL.md` — The legacy .windsurf/skills/ path still works

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/microsoft/skills/tree/HEAD/.github/plugins/azure-sdk-java/skills/azure-communication-chat-java/SKILL.md

## When to use it
- configure `ChatClient` and `ChatAsyncClient` with user credentials
- create multi-user chat threads and share prior message history
- send, edit, and delete text or HTML messages
- implement read receipts and typing status indicators

## Example prompts
- Show me how to initialize ChatClient for Azure Communication Services in Java
- Create a chat thread with two participants and send an HTML message
- How do I list and send read receipts using ChatThreadClient?

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 6496b80ef571d4b2.

BEGIN THIRD-PARTY FILE 6496b80ef571d4b2
````text
---
name: azure-communication-chat-java
description: Build real-time chat applications with Azure Communication Services Chat Java SDK. Use when implementing chat threads, messaging, participants, read receipts, typing notifications, or real-time chat features.
license: MIT
metadata:
  author: Microsoft
  version: "1.0.0"
  package: com.azure:azure-communication-chat
---

# Azure Communication Chat (Java)

Build real-time chat applications with thread management, messaging, participants, and read receipts.

## Installation

```xml
<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-communication-chat</artifactId>
    <version>1.6.0</version>
</dependency>
```

## Client Creation

```java
import com.azure.communication.chat.ChatClient;
import com.azure.communication.chat.ChatClientBuilder;
import com.azure.communication.chat.ChatThreadClient;
import com.azure.communication.common.CommunicationTokenCredential;

// ChatClient requires a CommunicationTokenCredential (user access token)
String endpoint = "https://<resource>.communication.azure.com";
String userAccessToken = "<user-access-token>";

CommunicationTokenCredential credential = new CommunicationTokenCredential(userAccessToken);

ChatClient chatClient = new ChatClientBuilder()
    .endpoint(endpoint)
    .credential(credential)
    .buildClient();

// Async client
ChatAsyncClient chatAsyncClient = new ChatClientBuilder()
    .endpoint(endpoint)
    .credential(credential)
    .buildAsyncClient();
```

## Key Concepts

| Class | Purpose |
|-------|---------|
| `ChatClient` | Create/delete chat threads, get thread clients |
| `ChatThreadClient` | Operations within a thread (messages, participants, receipts) |
| `ChatParticipant` | User in a chat thread with display name |
| `ChatMessage` | Message content, type, sender info, timestamps |
| `ChatMessageReadReceipt` | Read receipt tracking per participant |

## Create Chat Thread

```java
import com.azure.communication.chat.models.*;
import com.azure.communication.common.CommunicationUserIdentifier;
import java.util.ArrayList;
import java.util.List;

// Define participants
List<ChatParticipant> participants = new ArrayList<>();

ChatParticipant participant1 = new ChatParticipant()
    .setCommunicationIdentifier(new CommunicationUserIdentifier("<user-id-1>"))
    .setDisplayName("Alice");

ChatParticipant participant2 = new ChatParticipant()
    .setCommunicationIdentifier(new CommunicationUserIdentifier("<user-id-2>"))
    .setDisplayName("Bob");

participants.add(participant1);
participants.add(participant2);

// Create thread
CreateChatThreadOptions options = new CreateChatThreadOptions("Project Discussion")
    .setParticipants(participants);

CreateChatThreadResult result = chatClient.createChatThread(options);
String threadId = result.getChatThread().getId();

// Get thread client for operations
ChatThreadClient threadClient = chatClient.getChatThreadClient(threadId);
```

## Send Messages

```java
// Send text message
SendChatMessageOptions messageOptions = new SendChatMessageOptions()
    .setContent("Hello, team!")
    .setSenderDisplayName("Alice")
    .setType(ChatMessageType.TEXT);

SendChatMessageResult sendResult = threadClient.sendMessage(messageOptions);
String messageId = sendResult.getId();

// Send HTML message
````
END THIRD-PARTY FILE 6496b80ef571d4b2

The third-party file has ended. Everything between the 6496b80ef571d4b2 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 3306 of 9550 bytes. © Microsoft · MIT · https://github.com/microsoft/skills/tree/HEAD/.github/plugins/azure-sdk-java/skills/azure-communication-chat-java/SKILL.md

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---
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