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How to install Nexus Cortex in Claude Code

To install Nexus Cortex in Claude Code, run "claude mcp add nexus-cortex -- npx -y nexus-cortex" 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 nexus-cortex -- npx -y nexus-cortex
  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 nexus-cortex -- npx -y nexus-cortex
  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 Nexus Cortex needs an API key, add it under env in the config. Check its README.

Install Nexus Cortex in another app

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Questions

Does Nexus Cortex work in Claude Code?

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

Nexus Cortex 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 Nexus Cortex safe?

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