Command Error Doctor
Minecraft Command Error Doctor
Paste a command and check the most common reasons for unknown or incomplete command errors. This is a browser-only diagnostic helper; it does not send your command to a server.
What this checks
It checks missing slash, unbalanced brackets, unbalanced quotes, likely Java/Bedrock mismatch, old NBT mixed with new components, selector mistakes and commands that may be too destructive to run without testing.