How to install Server Sequential Thinking 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 Server Sequential Thinking by running "gemini mcp add server-sequential-thinking npx -y @sequentialthinking/server-sequential-thinking", then type /mcp to check it.

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Run the install command

In a terminal, run:

gemini mcp add server-sequential-thinking npx -y @sequentialthinking/server-sequential-thinking

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

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

Install Server Sequential Thinking in another app

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Questions

Does Server Sequential Thinking work in Gemini CLI?

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

Server Sequential Thinking 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 Server Sequential Thinking safe?

It scores 85 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.