Slack_connect

mcp-slack_connect

Slack MCP Pack

Part of Pipeworx — an MCP gateway connecting AI agents to 1683+ live data sources.

Tools

Tool	Description
slack_list_channels	List channels in the Slack workspace. Returns channel names, IDs, and metadata.
slack_channel_history	Get message history from a Slack channel. Bot auto-joins the channel if needed.
slack_send_message	Send a message to a Slack channel. Bot auto-joins the channel if needed.
slack_list_users	List users in the Slack workspace. Returns user profiles, IDs, and status.
slack_join_channel	Join a public Slack channel so the bot can read history and post messages.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "slack_connect": {
      "url": "https://gateway.pipeworx.io/slack_connect/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/slack_connect/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — ask_pipeworx, discover_tools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

This is deliberate, not multiplexing by accident. The meta-tools are what let a scoped connection answer a question this pack does not cover — via ask_pipeworx, which routes across the whole catalog — without you adding a second MCP server. There is currently no way to mount a pack endpoint without them; if the extra schemas cost you more context than the routing is worth, connect to the full gateway once rather than to several pack endpoints.

Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Both URLs reach the same gateway and the same 1683+ data sources. The only difference is which pack's tools are listed directly; ask_pipeworx reaches all of them from either one.

No MCP client? Call it over HTTP

This pack runs against a connected slack account, so it needs a Pipeworx key: sign in at https://pipeworx.io/account, connect slack, then call POST https://gateway.pipeworx.io/v1/tools/slack_list_channels with Authorization: Bearer <your Pipeworx key>. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/slack_list_channels. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.

Standalone (no gateway account)

This package also runs as a local stdio MCP server — no Pipeworx account, no gateway round-trip:

{
  "mcpServers": {
    "slack_connect": {
      "command": "npx",
      "args": ["-y", "@pipeworx/mcp-slack_connect"]
    }
  }
}

Or run it directly to confirm it starts:

npx -y @pipeworx/mcp-slack_connect

It speaks MCP over stdin/stdout and answers initialize/tools/list/tools/call for only this pack's tools — none of the shared meta-tools the gateway connection above adds. Same source, same tools, no ask_pipeworx routing.

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:

ask_pipeworx({ question: "your question about Slack_connect data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT