Use MCP server from local disk?

[fredrikaverpil]

I'm trying to get some simple tools to work which I have on my local disk:

{
  "mcpServers": {
    "my-tools": {
      "command": "uv",
      "args": [
        "--directory",
        "/Users/fredrik/code/public/mcp-tools",
        "run",
        "server.py"
      ]
    }
  }
}

Claude Desktop picks up on this, but codecompanion.nvim with mcphub.nvim does not.
I don't see the my-tools MCP server showing when I bring up the :MCPHub UI. I'm on the native-servers branch.

Is it expected that this should work with codecompanion.nvim + mcphub.nvim?

I am launching both Claude Desktop and Neovim from the same directory, having the uv binary available in both cases.

[ravitemer]

I don't see the my-tools MCP server showing when I bring up the :MCPHub UI. I'm on the native-servers branch.

Is the config file path for mcphub.nvim that same file path? It's odd that you dont see the server at all. If possible can you share the server.py so that I can test it on my system

[fredrikaverpil]

Yes, I've made sure to have this config in both the claude JSON config and the mcphub.nvim JSON config.

I pushed my code here for you to see: https://github.com/fredrikaverpil/mcp-tools

[ravitemer]

      "github.com/fredrikaverpil/mcp-tools": {  
        "command": "uv",  
        "args": [  
          "--directory",  
          "/home/ubuntu/mcp-tools",  
          "run",  
          "server.py"  
        ]  
      }, 

This is working for me. Fine, It is super weird that you can't see the server name itself in the UI.

[fredrikaverpil]

Can I acquire logs or debug infor or something and send over?

[fredrikaverpil]

This is what I see on my end:

Screen.Recording.2025-03-29.at.11.27.09.mov

And this shows that it works fine with Claude Desktop:

claude.mov

[ravitemer]

Can I acquire logs or debug infor or something and send over?

You can setup

mcphub.setup({
	log = {
		to_file = true,
		file_path = "/home/ubuntu/mcphub.log",
		level = vim.log.levels.DEBUG,
	},
	-- other config
})

[ravitemer]

Okay, from your config file I see total 6 servers. In the UI I see only 4. Ollama is also missing. Can you show me your "Config" view of the UI or mcphub.setup({ config = "filepath.json"}) ? I think the config is not pointing to the correct file. Do you have multiple config files for claude and mcphub?

[fredrikaverpil]

Oh my, how weird. I had another Neovim session opened. And when I closed it, I can now see my local MCP server. 🎉

Sorry for all this noise. Should've gone with the "plug it out and in again" before writing to you.

[ravitemer]

Hooo, that is a rare case 😄 . The reason it does this is so that multiple neovim session can just use a single server rather than each creating thier own. This is intentional. So, when you previously start the first neovim with the old config file the server was started with just the 4 servers. Now, whenever you open the second neovim it automatically connects to the already running server rather than starting a new one thereby showing only 4.

[fredrikaverpil]

Anyway, and again, I'm so sorry for all this noise. Thank you so much for your swift support and fantastic work on mcphub.nvim!

[ravitemer]

Not a problem! Thank you!