MC Toolkit / Commands / Advanced Command Builder — Execute & Data / Data Command Generator
Data Command Generator
Build a /data command to read, merge, modify, or remove NBT data on a block, entity, or storage — including modify's append/insert/prepend/set/merge ops.
390 argument paths · Minecraft 26.3 · from Mojang's own command tree
Run these from an operator’s chat, a command block, or a function file. Execute is simplified here — chain the rows in the order you want them to run.