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How to install Brain in Claude Code

To install Brain in Claude Code, run "claude mcp add brain -- npx -y @schlessera/brain" in your terminal, then check it with "claude mcp list". It takes about a minute.

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  1. 1

    Run the install command

    Open a terminal in your project and run:

    claude mcp add brain -- npx -y @schlessera/brain
  2. 2

    Choose where it applies (optional)

    Add --scope user to use it in every project, or --scope project to share it with your team through a .mcp.json file.

    claude mcp add --scope user brain -- npx -y @schlessera/brain
  3. 3

    Check that it is connected

    List your servers, or type /mcp inside a Claude Code session to see its status and tools.

    claude mcp list

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

Install Brain in another app

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Questions

Does Brain work in Claude Code?

Yes. Claude Code supports mcp servers (local and remote), skills and plugins, and Brain installs with the steps above.

Brain does not show up in Claude Code. What now?

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

Is Brain safe?

It scores 84 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.