Nostr Relay Speed Test

"Build a web app that queries kind 30066 events from a relay, extracts 21 relay URLs, connects to each and requests one event, measures response time in ms, and displays a leaderboard with fastest relays at the top. Compare your measured results to the NIP-66 reported latencies."

Note: The challenge specified kind 30066, but NIP-66 actually defines kind 30166 for relay metadata events. This app uses the correct kind.

Model: Claude Opus 4.5
Tokens: ~15k
Dev Time: 5 min
Click "Start Test" to begin...
# Relay Measured Reported (NIP-66) Diff
No results yet. Start the test to measure relay speeds.