How to pass the variable env into the MCP command

[jxbwhe]

Hello, how can I pass in the corresponding key through a command for something like this with env

{ "mcpServers": { "baidu-maps": { "command": "uvx", "args": [ "mcp-server-baidu-maps" ], "env": { "BAIDU_MAPS_API_KEY": "xxx" } } } }

Is that so?

uvx mcpo --port 8000 -- uvx mcp-server-baidu-maps --BAIDU_MAPS_API_KEY=xxxx

[rwachters]

with: --api-key xxxxx

for instance i have this Dockerfile for mcpo proxy:

FROM python:3.11-slim

# Install uv globally
RUN pip install -U uv

# Install dependencies
RUN pip install mcpo mcp-server-time

# Set working directory and copy addon files
WORKDIR /app/mcp-addition
COPY mcp-addition/addition_server.py ./
COPY mcp-addition/pyproject.toml ./

# Install custom package in editable mode
RUN pip install .

# Set working directory and copy configuration files
WORKDIR /app
COPY mcpo_config.json ./
COPY .env ./

EXPOSE 8000

# Start the server with configuration and API key
CMD uvx mcpo --host 0.0.0.0 --port 8000 --config mcpo_config.json --api-key ${MCP_API_KEY}

mcpo_config.json

{
  "mcpServers": {
    "addition": {
      "command": "python",
      "args": ["/app/mcp-addition/addition_server.py"]
    },
    "time": {
      "command": "uvx",
      "args": ["mcp-server-time", "--local-timezone=America/New_York"]
    }
  }
}

.env
MCP_API_KEY=secret_key

then in docker-compose.yml, you can link .env file:

  mcp-proxy-server:
    build: ./mcp-proxy-server/
    container_name: mcp-proxy-server
    ports:
      - "127.0.0.1:8000:8000"
    env_file:
      - ./mcp-proxy-server/.env
    restart: unless-stopped

I don't really know how to use the docker command directly, but i assume something similar would also be possible without using docker compose.

[rwachters]

oh i see you probable didn't mean an API key for MCPO itself.. but just some other environment variable.. well you can also put that in the .env file.. but its more a Docker thing, and has nothing to do with MCPO.