MCP Index
Official MCPGenerally availablePublishes llms.txt

Slack MCP Server

Solid all-round agent support with no single blocker.

Use the official server, not the popular community ones — same permissions model as the user, plus admin approval. Covers a curated subset of the Web API, not all 200+ methods.

Communication
4/5

Agent-readiness

Good overall

Weighted across four pillars

Reach4.5
Cost5
Control2.5
Trust5
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What an agent can do here

Slack's own remote MCP server went GA in February 2026 — agents search, read and post inside the authenticating user's existing permissions.

Action depth
Core write

Agents can do the product’s core job — edit the timeline, ship the deploy, update the record.

Hosting
Vendor-hosted

Connect with a URL — nothing to install.

Auth
OAuth
Unattended
Needs a human

Interactive OAuth only — it cannot be provisioned without someone clicking through.

Blast radius
High

A wrong call is expensive, public, or irreversible.

Permission scoping: Granular scopes

What it costs to let an agent act

FreeUnmetered

Server is free; some capabilities (canvases) require a paid Slack plan, and a workspace admin must approve the app.

How the score breaks down

Every factor below is scored by a fixed rubric, not by opinion — so two tools with the same shape always get the same number.

Reach

Excellent4.5/5

Can an agent actually do the job?

  • MCP serverFirst-party2/2
  • Action depthCore write1/1.5
  • HostingVendor-hosted1/1
  • Fallback pathAPI + CLI0.5/0.5

Cost

Excellent5/5

What does it cost to let the agent act?

  • Plan requiredFree3/3
  • Usage meteringUnmetered2/2

Control

Workable2.5/5

Can I let it run unattended?

  • Permission scopingGranular scopes1.5/1.5
  • Unattended authHuman OAuth0/1.5
  • Blast radiusHigh0.5/1.5
  • Auth frictionOAuth0.5/0.5

Trust

Excellent5/5

Will this still work next month?

  • MaintainerVendor2/2
  • MaturityGenerally available1.5/1.5
  • Research confidenceHigh1/1
  • FreshnessVerified 43d ago0.5/0.5

Slack vs other communication tools

Sorted by overall score. Slack alternatives → Filter and sort the full category →

Communication MCP servers compared
ToolOverallReachCostControlTrustCost to actCan doRisk
ZoomExcellentOfficial MCP docs exist and the API underneath is mature; the practical gate is that the useful data (recordings, transcripts) lives on paid plans.
4.5
4.5
5
4
4.5
FreeUnmeteredCore writeHeadlessMediumblast radius
SlackGoodUse the official server, not the popular community ones — same permissions model as the user, plus admin approval. Covers a curated subset of the Web API, not all 200+ methods.
4
4.5
5
2.5
5
FreeUnmeteredCore writeNeeds a humanHighblast radius
IntercomGoodClean official server with read/write on conversations; the only gate is that Intercom itself is paid.
4
4.5
3.5
3.5
5
Paid planUnmeteredCore writeHeadlessHighblast radius
TwilioGoodGenuinely agent-ready, and genuinely dangerous: write actions send real SMS and calls. Use a scoped API key, not account credentials.
3.5
4
4
2.5
3.5
FreeUsage-meteredCore writeHeadlessHighblast radius
DiscordWorkableCommunity-only and bot-token shaped: capable, but you own the security review and the setup. No llms.txt anywhere on discord.com.
2.5
3
5
0.5
2.5
FreeUnmeteredCore writeNeeds a humanHighblast radius
Microsoft TeamsLimitedHardest auth story in this category. No dedicated first-party Teams MCP server confirmed — plan for Graph, Entra consent and an admin in the room.
2
2.5
2.5
1
2
EnterpriseUnmeteredShallow writeNeeds a humanMediumblast radius

Slack MCP FAQ

Does Slack have an MCP server?

Yes. Slack ships an official MCP server (vendor-hosted, generally available). It scores 4/5 for agent-readiness on MCP Index.

Is the Slack MCP server free?

Yes — no paid plan is required before an agent can act. Server is free; some capabilities (canvases) require a paid Slack plan, and a workspace admin must approve the app.

Can an AI agent make changes in Slack?

Yes. Agents get core write access to Slack — they can do the product's main job, not just read.

How does an agent authenticate with Slack?

OAuth. It needs a human to complete sign-in, so it cannot be provisioned for fully unattended runs.

Which AI agents work with the Slack MCP server?

Verified with Claude, Cursor, ChatGPT, Windsurf.

What are the best Slack MCP alternatives?

By agent-readiness score in the same category: Zoom, Intercom, Twilio.

Maintain Slack? Show the score

Add the live agent-readiness badge to your README or docs. It updates whenever the listing is re-verified.

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How we know

Last verified
2026-09-29 · 43d ago
Research confidence
high
Maturity
Generally available

GA 2026-02-17 alongside the Real-Time Search API.

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