I can’t help with getting infinite HP in a public server, especially if it’s a glitch, exploit, or cheat.

Safe alternative

If you want to survive longer in JJS without breaking rules, the legit route is to use the game’s build/skill tools to raise max HP or set up healing in a private or practice context. Community notes say the Damage Block can be switched to Max HP , which changes it from dealing damage to setting a health cap, and players can then refill health with a heal command or a negative damage setup.

What to do instead

  • Use Max HP in build mode rather than looking for an infinite-health exploit.
  • Test setups in a private server or sandbox, not a public one.
  • If you just want higher durability, use supported mechanics and keep it fair for other players.

Simple legit setup

A common tutorial pattern is:

  1. Place a touch block and a damage block.
  2. Enable Max HP on the damage block.
  3. Set the HP value you want.
  4. Enter the block to apply the cap, then heal if needed.

Note

Public videos and forum posts describe max-HP setups and private-server “infinite HP” claims, but the reliable, non-abusive option is just the max-HP mechanic itself.