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Slack MCP server: channels, messages, threads, reactions, users, files, and scheduled messages
npx @getmcp/cli add io.github.mindstone/mcp-server-slackRequires Node.js 18+. Community-contributed server. Review source before installing.
SLACK_CONFIG_PATHPath to the host-managed Slack config directory
SLACK_TEAM_IDSlack workspace team ID (one process per workspace)
SLACK_CLIENT_IDSlack OAuth Connected App client ID
SLACK_CLIENT_SECRETSlack OAuth Connected App client secret
Config file: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"io.github.mindstone/mcp-server-slack": {
"command": "npx",
"args": [
"-y",
"@mindstone/mcp-server-slack"
],
"env": {
"SLACK_CONFIG_PATH": "",
"SLACK_TEAM_ID": "",
"SLACK_CLIENT_ID": "",
"SLACK_CLIENT_SECRET": "",
"SLACK_DISABLE_REFRESH": "",
"SLACK_REQUEST_TIMEOUT_MS": "60000",
"SLACK_MAX_RETRIES": "10"
}
}
}
}