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How to install Jellyfish MCP Server 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 Jellyfish MCP Server by running "gemini mcp add jellyfish-mcp-server npx -y jellyfish-mcp-server", then type /mcp to check it.

Built from the published package · server updated 1 month ago

  1. 1

    Run the install command

    In a terminal, run:

    gemini mcp add jellyfish-mcp-server npx -y jellyfish-mcp-server
  2. 2

    Check it

    Inside Gemini CLI, type /mcp to list servers and tools.

MCP servers run with your permissions. If Jellyfish MCP Server needs an API key, add it under env in the config. Check its README.

Install Jellyfish MCP Server in another app

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Questions

Does Jellyfish MCP Server work in Gemini CLI?

Yes. Gemini CLI supports local and remote mcp servers, extensions (legacy), and Jellyfish MCP Server installs with the steps above.

Jellyfish MCP Server does not show up in Gemini CLI. What now?

Restart Gemini CLI fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.

Is Jellyfish MCP Server safe?

It scores 72 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.