Our grade: 4 checks
Based on public data, not a full audit. See how we grade. Something changed? Request a re-grade.
Community rating
- 5 6
- 4 12
- 3 1
- 2 0
- 1 0
Trust in production
- Trust it - 79%
- With caveats - 21%
- Wouldn't - 0%
100% would recommend this server
How reviewers scored it
- Setup & docs 4.3
- Auth experience 4.1
- Reliability 4.5
- Maintainer responsiveness 4.4
Why it got an A
Slack's official server, hosted over HTTPS. OAuth user tokens carry per-tool scopes, a workspace admin must approve the integration, and calls show up in Slack's audit logs. It can post messages, create channels, edit canvases and upload files as you, and it reads messages anyone in your channels wrote, so keep tool approval on. The old @modelcontextprotocol/server-slack is archived with an unfixed data-leak CVE (CVE-2025-34072); don't use it. Biggest deduction: the server is closed source, so maintenance is one band lower.
How to connect
# Slack's MCP plugin (docs.slack.dev/ai/slack-mcp-server/connect-to-claude)
claude plugin install slackIs Slack MCP Server safe?
Is Slack MCP Server safe to use?
Slack MCP Server grades A (strong public trust signals). Upkeep is hard to verify (closed source or a single maintainer), so pin the version you tested.
Does Slack MCP Server have known vulnerabilities?
Not in our current data: it has no open CVEs or advisories. We re-check as new ones are published.
Does Slack MCP Server support authentication?
Yes. It requires a login, so access can be tied to a person or a scoped key.
Alternatives in Collaboration
- A Google Drive MCP ServerOfficial Google-hosted Drive server (Developer Preview) to search, read, download, create, and copy files, with scoped OAuth.
- A Pragor Project Board MCP ServerHosted server that connects an agent to a Pragor project board to read and update messages, tasks and operations, with a per-agent token limited to its project role.
- A monday.com MCPmonday.com's official MCP server, hosted at mcp.monday.com or run locally from npm, to read and update boards, items, columns, updates and forms.
- B Asana MCPOfficial hosted Asana server to search, read, create, and update tasks and projects, with OAuth sign-in.
- B Dropbox MCP ServerOfficial hosted Dropbox server (beta) to search, read, create, move, share, and restore files, plus Paper docs and Sign requests.
Embed this badge
[](https://trustedmcp.io/servers/slack-mcp-server)<a href="https://trustedmcp.io/servers/slack-mcp-server"><img src="https://trustedmcp.io/badge/slack-mcp-server.svg" alt="TrustedMCP grade A" height="80"></a>Community reviews
The Slack integration I wanted
I use this almost daily. Sign-in flow was painless and I never had to paste a key into a config file. You can tell it is actively maintained, the rough edges keep getting fixed. Happy to run it in production.
Used for Meeting prep from shared docs
- Setup & docs 5/5
- Auth experience 4/5
- Reliability 4/5
- Maintainer responsiveness 5/5
Recommended it to two teams already
Hooked Slack MCP Server into Claude Code and it worked on the first try. Filed an issue and got a reply within two days. Nothing to install, I just point the client at the URL. Token setup is the fiddliest part, after that it is smooth. Good choice if you need Slack in your agent.
Used for Drafting announcements
- Setup & docs 4/5
- Auth experience 4/5
- Reliability 5/5
- Maintainer responsiveness 4/5
Surprisingly polished
Of the Slack integrations I tried, this one is the most predictable. The OAuth flow worked first time in Claude Code. Hosted endpoint means no local process to babysit. Good choice if you need Slack in your agent.
Used for Turning chat threads into tasks
- Setup & docs 4/5
- Auth experience 4/5
- Reliability 5/5
- Maintainer responsiveness 5/5
Set it up once, forgot about it
Clear tool names, sensible outputs, very few surprises. Updates land regularly, and nothing broke when I upgraded. Auth is handled properly, and revoking access later was one click. Would recommend without hesitation.
Used for Drafting announcements
- Setup & docs 5/5
- Auth experience 3/5
- Reliability 5/5
- Maintainer responsiveness 4/5
Good defaults, good docs
Started with it as an experiment, now it is a fixture. Nothing to install, I just point the client at the URL. It is in our production agent and I sleep fine.
Used for Searching old conversations for decisions
- Setup & docs 5/5
- Auth experience 5/5
- Reliability 5/5
- Maintainer responsiveness 5/5
Solid and well behaved
Set this up for our team after comparing a few options. Sign-in flow was painless and I never had to paste a key into a config file. Releases come often and the changelog is clear.
Used for Summarising channels I missed
- Setup & docs 5/5
- Auth experience 5/5
- Reliability 5/5
- Maintainer responsiveness 5/5
Easy win for our agent setup
Set this up for our team after comparing a few options. Nice to use something maintained by Slack (Salesforce) rather than a random fork. Filed an issue and got a reply within two days. Scoped the token to just what the agent needs and it respected that. Easy recommendation.
Used for Posting daily standup summaries
- Setup & docs 5/5
- Auth experience 5/5
- Reliability 5/5
- Maintainer responsiveness 5/5
Earned a permanent spot in my config
Hooked Slack MCP Server into Claude Code and it worked on the first try. Scoped the token to just what the agent needs and it respected that. Worth it, just do not skip the hardening steps.
Used for Turning chat threads into tasks
- Setup & docs 5/5
- Auth experience 4/5
- Reliability 4/5
- Maintainer responsiveness 4/5
Quietly reliable
Simple to set up in Cursor, simple to reason about. I like that access goes through a proper sign-in instead of a long-lived secret on disk. Recommended, with sensible guardrails.
Used for Summarising channels I missed
- Setup & docs 3/5
- Auth experience 4/5
- Reliability 4/5
- Maintainer responsiveness 4/5
Exactly what I needed from Slack
Started with it as an experiment, now it is a fixture. Being closed source, I cannot audit it, but the vendor has been responsive. I like that access goes through a proper sign-in instead of a long-lived secret on disk.
Used for Turning chat threads into tasks
- Setup & docs 5/5
- Auth experience 5/5
- Reliability 4/5
- Maintainer responsiveness 4/5
Clean integration, sensible permissions
Installed it on a Friday, it was part of my workflow by Monday. Hosted endpoint means no local process to babysit. You can tell it is actively maintained, the rough edges keep getting fixed.
Used for Keeping project boards up to date
- Setup & docs 4/5
- Auth experience 4/5
- Reliability 5/5
- Maintainer responsiveness 3/5
Does what it says, no drama
Installed it on a Friday, it was part of my workflow by Monday. Hosted endpoint means no local process to babysit. Filed an issue and got a reply within two days. I would prefer to read the code, but the hosted service has been dependable. Happy to run it in production.
Used for Posting daily standup summaries
- Setup & docs 4/5
- Auth experience 4/5
- Reliability 5/5
- Maintainer responsiveness 5/5
Better than the DIY script it replaced
Replaced a homegrown script with Slack MCP Server and have not looked back. Scoped the token to just what the agent needs and it respected that. Would recommend without hesitation.
Used for Posting daily standup summaries
- Setup & docs 5/5
- Auth experience 4/5
- Reliability 4/5
- Maintainer responsiveness 5/5
Our team uses it every day
Simple to set up in Cursor, simple to reason about. Updates land regularly, and nothing broke when I upgraded. Easy recommendation.
Used for Meeting prep from shared docs
- Setup & docs 5/5
- Auth experience 3/5
- Reliability 4/5
- Maintainer responsiveness 5/5
Worth the five minutes to set up
Tried it on a side project first, then rolled it out at work. You can tell it is actively maintained, the rough edges keep getting fixed. I like that access goes through a proper sign-in instead of a long-lived secret on disk.
Used for Keeping project boards up to date
- Setup & docs 4/5
- Auth experience 4/5
- Reliability 5/5
- Maintainer responsiveness 4/5
No complaints after a month
Tried it on a side project first, then rolled it out at work. Sign-in flow was painless and I never had to paste a key into a config file. Narrowing the scopes took ten minutes and made me much happier running it.
Used for Meeting prep from shared docs
- Setup & docs 5/5
- Auth experience 5/5
- Reliability 5/5
- Maintainer responsiveness 5/5
Solid core, fiddly setup
Mostly reliable, with the odd timeout. Releases come often and the changelog is clear.
Used for Keeping project boards up to date
- Setup & docs 2/5
- Auth experience 3/5
- Reliability 3/5
- Maintainer responsiveness 4/5
Saves me a context switch every hour
Our agents call this dozens of times a day. Nothing to install, I just point the client at the URL. It is in our production agent and I sleep fine.
Used for Summarising channels I missed
- Setup & docs 3/5
- Auth experience 4/5
- Reliability 5/5
- Maintainer responsiveness 4/5
Trustworthy enough for real work
Been running this for about a month now. Releases come often and the changelog is clear. I like that access goes through a proper sign-in instead of a long-lived secret on disk. Happy to run it in production.
Used for Searching old conversations for decisions
- Setup & docs 4/5
- Auth experience 4/5
- Reliability 4/5
- Maintainer responsiveness 4/5
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