Slack MCP servers: which one to use

Use Slack's server if your admin allows it. Pick korotovsky's for a local server with posting off by default, or jtalk22's if your workspace blocks new apps.

Servers: 55; active
Official: 1; by Slack
Hosted: 8; nothing to install
Local: 36; runs on your machine
OAuth: 1; sign in, no key

Slack publishes an official MCP server that you sign in to with your Slack account, and your workspace admin can approve or block it. Community servers run on your own computer and use Slack tokens instead, which suits workspaces where the official one is not an option. All of them can read your messages, and most can post, so choose one that fits how much you want an AI to reach. Slack's docs also say that only apps in the Slack Marketplace and internal apps can use the official server.

Good for

Teams that want Claude, ChatGPT or Cursor to search Slack history and answer questions from it
Admins who need to approve, log and control which AI apps reach Slack
Developers who want a local server and full control over tokens
People on a free Slack workspace with no room for another app

Which Slack MCP server to use

Use Slack's official server first, because Slack and your admin control the access. Use korotovsky's when you want a local server that cannot post unless you turn that on, and jtalk22's only if your workspace blocks new apps.

Server	Official	Runs	Sign-in	Can post messages	GitHub stars
SlackThis page	Official	Hosted	Account	Yes	–
korotovsky	Community	Local	Token	Opt-in	1.9K
ubie-oss	Community	Local	Token	Yes	110
pulsemcp	Community	Local	Token	Yes	–
jtalk22	Community	HostedLocal	Browser session	Yes	32

All Slack MCP servers

55 active · 1 official · official first, then by GitHub stars

Show all 55

Questions

Does Slack have an official MCP server?

Yes. Slack runs a hosted server and you sign in with your Slack account. Slack's docs say it can search messages, files, users and channels, send and schedule messages, and work with canvases and lists.

What is the Slack MCP server URL?

The official address is https://mcp.slack.com/mcp. Slack's docs say it uses Streamable HTTP and does not support SSE connections.

Can any app use the official Slack server?

No. Slack's docs say only apps published in the Slack Marketplace and internal apps can use it, and unlisted apps are not allowed. Your workspace admin can approve and manage connected apps, and audit logs record the activity.

Which Slack server is safest?

The official one, because admins approve it and audit logs track it. Among community servers, korotovsky's keeps its posting tool off until you set a variable, and jtalk22's has a read-only flag.

Can a Slack MCP server post messages for me?

Yes, the official one and most community servers can send messages. In korotovsky's server posting is off by default. You can allow it for all channels or only a list you choose.

Which one works on a free Slack workspace?

jtalk22's README says it installs no Slack app and needs no admin approval, because it reads Slack through your own browser session. korotovsky's stealth mode also runs without extra permissions or a bot install.

Do the community servers need a Slack token?

Yes, in different forms. ubie-oss and pulsemcp use a bot token, and ubie-oss adds a user token for search. korotovsky's server takes OAuth tokens or browser session tokens. Bot tokens cannot use Slack's message search, according to korotovsky's README.

Is the old reference Slack server still a good choice?

No. The Slack server from the MCP project's reference collection is marked deprecated, so use one of the maintained servers here.

Does it work in Claude and Cursor?

The official server has connection guides for Claude and Cursor on Slack's developer site. Community servers run locally and use a standard config for clients like Claude Desktop and Cursor.