Configuration

Narnia reads configuration from environment variables. No API key is required — all data is local to your machine.

Environment Variables

Variable	Default	Description
NARNIA__DatabasePath	~/.copilot/session-store.db	Path to the Copilot CLI SQLite session database
NARNIA__SessionStatePath	~/.copilot/session-state/	Directory containing per-session state folders

Setting Variables in mcp-config.json

Pass environment variables via the env block in your MCP client config:

{
  "mcpServers": {
    "narnia": {
      "type": "stdio",
      "command": "dotnet",
      "args": ["run", "--project", "/path/to/narnia/src/NexusLabs.Narnia.McpServer"],
      "env": {
        "NARNIA__DatabasePath": "D:\\custom-path\\session-store.db",
        "NARNIA__SessionStatePath": "D:\\custom-path\\session-state\\"
      }
    }
  }
}

Default Paths

The defaults resolve to the standard Copilot CLI locations on all platforms:

• Windows: C:\Users\{username}\.copilot\
• macOS / Linux: ~/.copilot/

If your Copilot CLI data is in the default location, no configuration is required.

Web UI Port

The web UI listens on http://localhost:5244 by default (configured in src/NexusLabs.Narnia.Web/Properties/launchSettings.json). To change the port, modify the applicationUrl in that file before building.