Skip to content
mcp/harbor
Claude Desktop

nav substrate for Claude Desktop

io.github.wchampe/nav-substrate

Relativistic navigation calcs for agents: time dilation, trip planning, chronometry, gamma.

client:Claude Desktop transport:stdio runtime:pypi

Install nav substrate in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "nav-substrate": {
      "command": "uvx",
      "args": [
        "nav-substrate-mcp"
      ],
      "env": {
        "NAV_SERVICE_API_KEY": "<NAV_SERVICE_API_KEY>",
        "NAV_SERVICE_URL": "<NAV_SERVICE_URL>",
        "NAV_SERVICE_LOCAL": "<NAV_SERVICE_LOCAL>"
      }
    }
  }
}

Settings → Developer → Edit Config opens this file. Restart the app after saving. Claude Desktop docs

nav substrate in other clients

nav substrate MCP server