slack-mcp-server

# Slack MCP Server ## Project Overview Supports tools for sending Slack messages, querying channel history, etc., using **Spring AI**. --- ## Main Tools ### Implemented Tools #### 1. Send Message (postSlackMessage) * Sends a message to a Slack channel. Partially supports Markdown format. #### 2. Query Channel History (slackChannelHistory) * Queries the message history of a Slack channel. You can specify a cursor for pagination and the number of messages to retrieve. #### 3. Upload File (uploadFileToSlack) * Uploads a file specified by an absolute path to a Slack channel. #### 4. Base64 File Upload (uploadFileToSlackByBase64) * Uploads Base64 encoded file data to a Slack channel. * However, if the file size is large, token usage may increase, so caution is advised. > It is recommended to use the absolute path specification method. #### 5. Schedule Message (slackScheduleMessage) * A feature that allows you to schedule sending a message at a specific time. --- ## Setup Method ### Build and Run 1. Build the project ```bash # Build the project ./gradlew build ``` 2. Run with **Claude Desktop** Write `claude_desktop_config.json` as follows. ```json { "mcpServers": { "slack-mcp": { "command": "java", "args": [ "-Dfile.encoding\u003dUTF-8", "-jar", "JAR_PATH" ], "env": { "SLACK_BOT_TOKEN": "xoxb-your-bot-token", "SLACK_CHANNEL_ID": "your-channel-id" } } } } ``` - `JAR_PATH`: Path to the built jar file - `SLACK_BOT_TOKEN`: Slack Bot token - `SLACK_CHANNEL_ID`: Slack channel ID to send messages to --- ## Project Structure ``` src/main/java/dev/luigi/slack/mcp/server/ ├── SlackMcpServerApplication.java # Main application class ├── dto/ # Data Transfer Objects │ ├── common/ # Common DTO │ ├── request/ # Request DTO │ └── response/ # Response DTO └── service/ # Service classes ├── SlackService.java # Slack service interface ├── SlackServiceImpl.java # Slack service implementation ├── file/ # File related services ├── history/ # Channel history related services ├── message/ # Message related services └── schedule/ # Scheduled message related services ```