How to use MCP ENV in Flow

[sai1274]

In the documentation https://docs.langflow.org/mcp-server, it’s mentioned that we can use environment variables to pass values to the MCP server. Can anyone help me understand how to access them in Langflow?

My Langflow instance is hosted on a different server, and I’m using that flow via MCP.

{
  "mcpServers": {
    "PROJECT_NAME": {
      "command": "uvx",
      "args": [
        "mcp-proxy",
        "http://LANGFLOW_SERVER_ADDRESS/api/v1/mcp/project/PROJECT_ID/sse"
      ],
      "env": {
        "KEY": "VALUE"
      }
    }
  }
}