AI Plugin Index
How to install MCP Slack in Gemini CLI
Gemini CLI was replaced by Antigravity CLI in June 2026. On an enterprise licence or paid API key you can still install MCP Slack by running "gemini mcp add mcp-slack uvx mcp-slack-crunchtools", then type /mcp to check it.
Built from the published package · server updated 5 days ago
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Run the install command
In a terminal, run:
gemini mcp add mcp-slack uvx mcp-slack-crunchtools - 2
Check it
Inside Gemini CLI, type /mcp to list servers and tools.
MCP servers run with your permissions. If MCP Slack needs an API key, add it under env in the config. Check its README.
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Questions
Does MCP Slack work in Gemini CLI?
Yes. Gemini CLI supports local and remote mcp servers, extensions (legacy), and MCP Slack installs with the steps above.
MCP Slack does not show up in Gemini CLI. What now?
Restart Gemini CLI fully, check the JSON is valid, and make sure uv (for uvx) is installed. See common MCP errors and fixes.
Is MCP Slack safe?
It scores 42 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.