What do i need to change so Claude Desktop can natively run uv command without specifying the full path?

[pietz]

Describe the bug
The mcp install server.py adds a simple uv command to the config. However, this doesnt work on my macOS system. I always need to provide the full uv path even though i have set it up in my $PATH.

To Reproduce
Steps to reproduce the behavior:

1. Use MCP server from Quickstart
2. mcp install server.py
3. appears in claude config
4. When launching Claude Desktop: Failed to start MCP server: Could not start MCP server Demo: Error: spawn uv ENOENT

Expected behavior
For most people it seems to work with just "uv". I want that as well.

Desktop (please complete the following information):

• OS: macOS 15.3

[g-votte]

As documented in the MCP Quick Start, it is the user's responsibility to specify the full path to the uv executable in the claude_desktop_config.json:

You may need to put the full path to the uv executable in the command field. You can get this by running which uv on MacOS/Linux or where uv on Windows.

Another approach would be to configure the PATH environment variable for application launches using OS-specific mechanisms (such as launchd on macOS).

Potential Automation

Currently, the command is hardcoded as "uv" in the update_claude_config function:

python-sdk/src/mcp/cli/claude.py

Line 115 in f10665d

"command": "uv",

While automatic path detection in python-sdk might be possible, it would be unreliable because the environment where update_claude_config runs may have different PATH settings than Claude Desktop's runtime environment.

[Mehdi-Bl]

Use docker, that's the best under-rated solution. Contain the MCP server depencies and clean versionning.