AI Plugin Index
How to install PreReason 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 PreReason by running "gemini mcp add prereason npx -y @prereason/mcp", then type /mcp to check it.
Built from the published package · server updated 2 days ago
- 1
Run the install command
In a terminal, run:
gemini mcp add prereason npx -y @prereason/mcp - 2
Check it
Inside Gemini CLI, type /mcp to list servers and tools.
MCP servers run with your permissions. If PreReason needs an API key, add it under env in the config. Check its README.
Install PreReason in another app
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Questions
Does PreReason work in Gemini CLI?
Yes. Gemini CLI supports local and remote mcp servers, extensions (legacy), and PreReason installs with the steps above.
PreReason 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 PreReason safe?
It scores 82 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.