MCP in Claude Desktop Error

Describe the problem/error/question

I’m getting an error when trying to acccess my n8n MCP fromclaude desktop.
Can someone help?
this is my claude desktop config file for MCP:

{
“globalShortcut”: “”,
“mcpServers”: {
“filesystem”: {
“command”: “npx”,
“args”: [
“-y”,
@modelcontextprotocol/server-filesystem”,
“/Users/hansoncheng/Desktop”,
“/Users/hansoncheng/Downloads”,
“/Users/hansoncheng/Library/Mobile Documents/com~apple~CloudDocs/Coding Projects/”
]
},
“n8n”: {
“command”: “npx”,
“args”: [
“-y”,
“supergateway”,
“–sse”,
https://workflows.contentsprout.ai/mcp/all/sse
]
}
}
}

What is the error message (if any)?

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

  • n8n version: 1.89.2

  • Database (default: SQLite):

  • n8n EXECUTIONS_PROCESS setting (default: own, main):

  • Running n8n via (Docker, npm, n8n cloud, desktop app): railway

  • Operating system: mac

1 Like

It looks like contentsprout MCP has an invalid tool name. Try to connect to it from MCP inspector like npx -y @modelcontextprotocol/inspector and check out what are the tool names (specifically the 12th tool as per your error here. Maybe this will give you more clues.

Yes try inspector, this helps troubleshoot,

You can maybe see here too Connect your remote MCP server to Claude Desktop via a local proxy