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How to install Openapi CLI in Claude Code

To install Openapi CLI in Claude Code, run "claude mcp add openapi-cli -- npx -y @powerduck/openapi-cli" 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 openapi-cli -- npx -y @powerduck/openapi-cli
  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 openapi-cli -- npx -y @powerduck/openapi-cli
  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 Openapi CLI needs an API key, add it under env in the config. Check its README.

Install Openapi CLI in another app

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Questions

Does Openapi CLI work in Claude Code?

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

Openapi CLI 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 Openapi CLI safe?

It scores 80 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.