Slack (pulsemcp)

A Model Context Protocol (MCP) server for integrating with Slack workspaces. This server provides tools for reading and writing messages, managing threads, and reacting to messages in Slack. Its 8 documented tools cover slack, message, thread.

People connecting communication tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

One of 28 MCP servers published from pulsemcp/mcp-servers. Stars and repository activity are shared across all of them. See all 28 →

VERIFIED ACTIVE

LAST COMMIT 2026-07-26 · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Slack (pulsemcp)

before you install - you'll need

SLACK_BOT_TOKEN

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add pulsemcp-mcp-servers-experimental-slack -- npx -y slack-workspace-mcp-server

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "pulsemcp-mcp-servers-experimental-slack": {
      "command": "npx",
      "args": [
        "-y",
        "slack-workspace-mcp-server"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package slack-workspace-mcp-server - unscoped; check the name against the project README before installing

registry vendor namespace com.pulsemcp - domain-verified with the official MCP registry

03 · What Slack (pulsemcp) can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can list all accessible channels, get channel info with recent messages, get a thread with all replies, and post a new message to a channel.

The 8 tools it gives your agent

Extracted from the project's README - what slack lets an agent do.

slack_get_channels: - List all accessible channels
slack_get_channel: - Get channel info with recent messages
slack_get_thread: - Get a thread with all replies
slack_post_message: - Post a new message to a channel
slack_reply_to_thread: - Reply to an existing thread
slack_update_message: - Update a previously posted message
slack_react_to_message: - Add an emoji reaction to a message
slack_upload_snippet: - Upload text content as a file snippet to a channel

Latest releases

[email protected] · 2026-07-10

Fixed · Gmail deep-links emitted by list_email_conversations, search_email_conversations, get_email_conversation, and send_email now use the form instead of Two independent defects made the old links fail to open the…

[email protected] · 2026-07-09

Added · create_oauth_client tool (keys group, write): mints a non-interactive Tailscale OAuth client (client_id + client_secret) with configurable scopes and ACL tags. Unlike create_auth_key - which only enrolls…

[email protected] · 2026-07-06

Added · set_account_balance_history (manage group): edit a manual account's recorded daily balance snapshots. Previously the server could read balance history (get_account_balance_history) but had no write counterpart…

04 · Who maintains Slack (pulsemcp)

slack is maintained by pulsemcp. We track 29 MCP servers from pulsemcp - 28 actively maintained, 77 combined GitHub stars, oldest repo from May 2025. Full record: all servers from pulsemcp.

05 · Facts

repository: github.com/pulsemcp/mcp-servers
category: communication - actively maintained as of 2026-08-25.
registry: com.pulsemcp/slack (active, first published 2026-05-18 · 2 versions)
packages: npm:slack-workspace-mcp-server

06 · Slack (pulsemcp) FAQ

Is Slack (pulsemcp) still maintained?

Yes - as of 2026-08-25, its last commit was 2026-07-26. We re-verify nightly.

What can Slack (pulsemcp) do?

With this server connected, an agent can list all accessible channels, get channel info with recent messages, get a thread with all replies, and post a new message to a channel.

How do I install Slack (pulsemcp)?

Run `npx -y slack-workspace-mcp-server`. The README documents one environment variable (SLACK_BOT_TOKEN) to set first. You can also paste the ready-made client config above.

Does Slack (pulsemcp) run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Slack (pulsemcp)

Alternatives to Slack (pulsemcp)

Maintained communication servers if Slack (pulsemcp) isn't the fit.

Pairs well with

Servers that cover what Slack (pulsemcp) doesn't - only shown when the pairing reason fits the companion.

More communication MCP servers · Twist · Aiogram MCP · Mup · Runframe MCP Server · Cursor History

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