spotify-mcp-server

The server handles Spotify OAuth 2.0 authentication by running a local HTTP server for the redirect URI, which is standard practice. Access and refresh tokens are stored locally in `spotify-config.json`. This means that these tokens could be compromised if the user's local machine is compromised. The use of a `state` parameter in the OAuth flow helps prevent CSRF. The `handleSpotifyRequest` function's error handling specifically skips JSON parsing errors, returning `undefined` for what it presumes are 'successful operations', which could potentially mask unexpected API responses or other issues, although it is not a direct security vulnerability.