Configuration

Environment Variables

Variable	Required	Default	Description
`SEMUST_API_KEY`	Yes	—	Your Semust API key
`SEMUST_BASE_URL`	No	`https://api.semust.com/v1/mcp`	API base URL

Go to app.semust.com and sign in to your account.

Navigate to Settings

Go to Settings > API Key in your Semust account.

Copy Your Key

Copy the API key. You’ll use this in your .env file or client configuration.

You can provide the API key in two ways:

Create a .env file in the MCP server directory:

.env

SEMUST_API_KEY=your_api_key_here
SEMUST_BASE_URL=https://api.semust.com/v1/mcp

Pass the API key directly in your AI client’s MCP configuration (see Setup Guides):

{
  "env": {
    "SEMUST_API_KEY": "your_api_key_here"
  }
}

When both .env and client config provide the key, the client config takes precedence.

The server enforces HTTPS for all API communication:

Never share your API key or include it in client-side code. Keep it in environment variables or secure configuration files.