SSASpawnerAntiESP

SSASpawnerAntiESP is an addon for SmartSpawner that stops players from locating spawners through walls using ESP or x-ray mods.

Instead of scanning entire chunks (like generic anti-xray plugins), this plugin only checks known spawner coordinates from SmartSpawner. That keeps server load low while still protecting hidden farms and bases.

!Showcase

How it works

• Loads all spawner positions from the SmartSpawner API
• Ray-traces from each player's eyes to nearby spawners
• No line of sight → the client sees a decoy block (stone, deepslate, netherrack, or end stone)
• Line of sight → the real spawner block is shown again
• On join and teleport, nearby spawners are hidden immediately to prevent flashing

Only the player's client view is changed. Server data, SmartSpawner storage, and admin tools like /ss list are not affected.

Requirements

• Paper 1.21.11 or 26.1.2
• SmartSpawner (must be installed first)
• Folia supported

Download the JAR that matches your Paper version (*-1.21.11.jar or *-26.1.2.jar).

Configuration

Per-world settings for enable/disable, ray trace distance, performance tuning, and more. Reload with /ssaspawnerantiesp reload.

Limitations

• Hides the spawner block on the client — not a full anti-cheat
• Decoy blocks may not blend perfectly with surrounding terrain
• Use the correct JAR for your Paper version

Links

• GitHub
• SmartSpawner

Licensed under MIT.