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Slack

MCP (Model Context Protocol) Server. Integrates with Slack workspaces to enable channel management, message posting, thread handling, reaction adding, history retrieval, and user profile access through the Slack API

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APIs & ServicesCommunicationFile Systems
Tools
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Validated
Jan 11, 2026
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My Slack MCP Server Extension

This is an extension of the Slack MCP Server that enables Claude to interact with Slack workspaces with additional custom functionality.

Additional Tools

slack_search_messages

  • Searches for messages across channels with optional DM exclusion
  • Required inputs:
    • query (string): The search query
  • Optional inputs:
    • count (number, default: 5): Number of results to return
  • Configuration options:
    • excludeDMsFromSearch (boolean, default: false): When true, excludes DM results from search by adding -in:@ to the query
  • Returns: JSON response containing search results

For all other available tools and functionality, please refer to the original Slack MCP Server documentation.

Setup

Please refer to the original Slack MCP Server documentation for setup instructions.

Development

Instructions for developing and contributing to your extension.

License

This extension is licensed under the MIT License.

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