Error in MCP connection to server sqlite: Error: spawn uvx ENOENT

[kun321]

When I tried quickStart, I created the sqlite3 database and configured claude config.jso. After restarting, I got some errors

2024-11-27T02:39:10.944Z [info] Attempting to connect to MCP server sqlite...
2024-11-27T02:39:10.980Z [error] Error in MCP connection to server sqlite: Error: spawn uvx ENOENT
    at ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'spawn uvx',
  path: 'uvx',
  spawnargs: [Array]
}
2024-11-27T02:39:10.980Z [error] Could not start MCP server sqlite: Error: spawn uvx ENOENT
    at ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'spawn uvx',
  path: 'uvx',
  spawnargs: [Array]
}

and i make some try follow the Troubleshooting

[kun321]

I have solved the problem.
Uv installation with brew
MUST USE brew install uv

[CindyXing]

Thanks. This helped me.

[andresgaona29]

I've do this with pip install and it works too

[S1M0N38]

I encountered the same issue while following the Server tutorial in the docs. I had installed uv using pipx. I solved the issue by providing the full path to the uv command (in my case /User/simo/.local/bin/uv).

I think the Claude Desktop App does not source the file where I added /User/simo/.local/bin to the PATH, and for this reason, it wasn't able to find the uv command (despite having uv installed).

[mmilbourne]

I had the same problems on Windows. uv.exe was installed in the .local\bin directory. Specifying the full path fixed the problem.

[shaofengshi]

Solved by your suggestion. Thanks!

[doobidoo]

I managed to make it working on Windows by checking the UVX installation as mentioned by @kun321
That gave me the clue to exactly use the arguments in Claude Desktop Configuration like this

    "sqlite": {
      "command": "uvx",
      "args": [
        "mcp-server-sqlite",
        "--db-path",
        "C:/Users/<username>/path_to_db/db.sqlite"
      ]
    }

[camball]

Took a look and didn't like how the uv/uvx installer did it.

They added a file ~/.local/bin/env which is a shell script that was run from my shell startup script (~/.zshrc in my case) and added everything in ~/.local/bin/ to my path. No idea why it's not just a simple "add folder to $PATH", so that's what I changed it to. I deleted the env and env.fish files to not leave stale scripts. I also moved the initialization from ~/.zshrc to ~/.zprofile so that it runs on non-interactive shells as well as interactive shells, as I was thinking maybe the shell that is running the MCP connection (inside Cursor, in my case) is non-interactive.

To ~/.zprofile:

# uv / uvx
export PATH="$HOME/.local/bin:${PATH}"

When I made these changes, worked great and MCP server started up just fine. I didn't want to have to install with Homebrew.

{
  "mcpServers": {
    "awslabs.cfn-mcp-server": {
      "command": "uvx",
      "args": ["awslabs.cfn-mcp-server@latest", "--readonly"],
      "autoApprove": []
    }
  }
}