I’ve been finding Nostr Playground by nostr:npub18c556t7n8xa3df2q82rwxejfglw5przds7sqvefylzjh8tjne28qld0we7 really nice for debugging relay stuff. It’s a little web tool that makes it easy to query relays. Trying to type out filters on the command-line is really tedious. https://playground.nostr.com/