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How to add the Slack MCP server to VS Code (GitHub Copilot)

Server URL: https://mcp.slack.com/mcp
Sign-in: OAuth needs your own pre-registered app (no dynamic client registration).
Our hands-on result: Works 7 of 7 tasks passed, tested Oct 16, 2026 with MCP Inspector (reference client).

VS Code setup

File: .vscode/mcp.json

{
  "servers": {
    "slack": {
      "type": "http",
      "url": "https://mcp.slack.com/mcp"
    }
  }
}
  1. Save the file and click Start above the server entry. VS Code asks you to trust the server.
  2. VS Code opens your browser to sign in on first connect.

We ran the hands-on test in a reference client, not in VS Code. This config follows VS Code's documented format for remote (Streamable HTTP) servers. If it fails for you, tell us and we will retest.

Known problems and fixes

Same server, other clients

Full Slack test report | Compare all tested connectors | Connector Weather

How to add the Slack MCP server to VS Code (tested Oct 16, 2026)