How to install ComfyUI Builder in Claude Code
To install ComfyUI Builder in Claude Code, run "claude mcp add comfyui-builder -- npx -y mcp-comfy-ui-builder" in your terminal, then check it with "claude mcp list". It takes about a minute.
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Run the install command
Open a terminal in your project and run:
claude mcp add comfyui-builder -- npx -y mcp-comfy-ui-builder - 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 comfyui-builder -- npx -y mcp-comfy-ui-builder - 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 ComfyUI Builder needs an API key, add it under env in the config. Check its README.
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Questions
Does ComfyUI Builder work in Claude Code?
Yes. Claude Code supports mcp servers (local and remote), skills and plugins, and ComfyUI Builder installs with the steps above.
ComfyUI Builder 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 ComfyUI Builder safe?
It scores 51 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.
