MCP server for sending notifications to Slack using OAuth bot tokens
Slack Notify becomes available to MCP clients through the slack notify mcp server. MCP server for sending notifications to Slack using OAuth bot tokens.
MCP server for sending notifications to Slack using OAuth bot tokens.
Once connected, the assistant can call this tool directly:
send_slack_notification — Parameters: - channel (optional): The Slack channel (e.g., #general or C1234567890) - title (optional): The notification title (if provided, displays withThe server is distributed via npm as @mkusaka/mcp-server-slack-notify, so most clients can run it without a manual build step. Add it to your MCP client's configuration and restart the client to pick it up — the copy-paste configs for Claude Desktop, Claude Code and Cursor are on this page.
Before the server will start you need to supply 3 environment variables: SLACK_BOT_TOKEN, SLACK_DEFAULT_CHANNEL, SLACK_MENTIONS. Keep credentials in your client's env block or a secrets manager rather than committing them.
Communication servers earn their keep on volume — summarising channels and threads that would otherwise cost you an hour of scrollback. Slack Notify sits in that group, and the shape of its toolset — send_slack_notification — tells you what it is really for. Worth comparing against the other communication servers in this directory before you commit to one, since several overlap in scope but differ sharply in setup cost and permissions.
| Tool | What it does |
|---|---|
| send_slack_notification | Parameters: - channel (optional): The Slack channel (e.g., #general or C1234567890) - title (optional): The notification title (if provided, displays with header formatting) - description (required): The notification bod |
{
"mcpServers": {
"slack-notify": {
"command": "npx",
"args": ["-y", "@mkusaka/mcp-server-slack-notify@latest"],
"env": {
"SLACK_BOT_TOKEN": "xoxb-your-token-here",
"SLACK_DEFAULT_CHANNEL": "#general",
"SLACK_MENTIONS": "U1234567890,U0987654321"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| SLACK_BOT_TOKEN | Credential the server authenticates with. | Yes |
| SLACK_DEFAULT_CHANNEL | Configuration value read at startup. | Optional |
| SLACK_MENTIONS | Configuration value read at startup. | Optional |
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