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Slack MCP Server

remote (hosted) MCP server

Slack MCP Server is a remote (hosted) MCP server: Catch up on Slack without reading it. Unreads, threads, search. Browser-session or hosted OAuth. Connect any MCP client to https://mcp.revasserlabs.com/oauth/mcp.

Installation

Terminal

claude mcp add --transport http slack-mcp-server https://mcp.revasserlabs.com/oauth/mcp

Run in your project folder. Add --scope user to use it everywhere.

Claude Desktop

Open Settings → Connectors → Add custom connector, then paste https://mcp.revasserlabs.com/oauth/mcp.

Cursor & other clients

Add to .cursor/mcp.json or your client's MCP config.

{
  "mcpServers": {
    "slack-mcp-server": {
      "type": "http",
      "url": "https://mcp.revasserlabs.com/oauth/mcp"
    }
  }
}

What you need

  • Runtime: Nothing, it's hosted.
  • MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over streamable HTTP.
  • Environment variables: SLACK_TOKEN, SLACK_COOKIE

Summary

Catch up on Slack without reading it. Unreads, threads, search. Browser-session or hosted OAuth.

Slack MCP Server vs similar servers

ServerStarsTypeAPI keyRuntime
Slack MCP Server30HostedYesNone
reddit-mcp-buddy839LocalNonpm
one-search-mcp143LocalYesnpm
Firecrawl MCP Server7,526LocalYesnpm
arxiv-mcp-server3,177LocalYespypi

Questions

It reads 2 environment variables: SLACK_TOKEN, SLACK_COOKIE. Set them in your MCP config before starting the server.

Only an MCP client such as Claude Code, Codex, Claude Desktop or Cursor. Slack MCP Server is hosted, so there is nothing to install.

Slack MCP Server is a remote (hosted) MCP server served at https://mcp.revasserlabs.com/oauth/mcp.

Run: claude mcp add --transport http slack-mcp-server https://mcp.revasserlabs.com/oauth/mcp

Run: codex mcp add slack-mcp-server --url https://mcp.revasserlabs.com/oauth/mcp

Similar MCP servers

NameStars
  1. reddit-mcp-buddyio.github.karanb192/reddit-mcp-buddy839
  2. one-search-mcpio.github.yokingma/one-search-mcp143
  3. Firecrawl MCP Serverio.github.firecrawl/firecrawl-mcp-server7,526
  4. arxiv-mcp-serverio.github.blazickjp/arxiv-mcp-server3,177
  5. braveai.smithery/brave1,477
  6. SearXNG Searchio.github.ihor-sokoliuk/mcp-searxng1,262
  7. SoloMDio.github.zhitongblog/solomd1,130
  8. fastCRWio.github.us/fastcrw1,079