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How to install Synthra 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 Synthra by running "gemini mcp add synthra npx -y @jefuriiij/synthra", then type /mcp to check it.

Built from the published package · server updated 7 days ago

  1. 1

    Run the install command

    In a terminal, run:

    gemini mcp add synthra npx -y @jefuriiij/synthra
  2. 2

    Check it

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

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

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Questions

Does Synthra work in Gemini CLI?

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

Synthra 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 Synthra safe?

It scores 83 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.