Problem with MCP

I am having trouble with the MCP server – for some reason H@lloAI cannot see it (No MCP server tools are currently available or allowed.). The configuration file is definitely correct, because I tested it using MCP Inspector and it detects all tools without any problems, but BTT does not.

btt-mcp-config.json:

{
  "mcpServers": {
    "default-server": {
      "command": "uvx",
      "args": [
        "--directory",
        "/Users/michalstankiewicz/obsidian-mcp-server/",
        "mcp-obsidian"
      ],
      "env": {
        "OBSIDIAN_API_KEY": "<MY_KEY>"
      }
    }
  }
}