An NPC buffer lets players grab their buffs from a single NPC instead of needing support classes. Most community buffers are script or quest based, and installing one follows the same routine on any L2J fork.
Before you start
- Pick a buffer that matches your chronicle (Interlude buffers will not work cleanly on High Five, etc.).
- Back up your game database.
Installation steps
- Import the SQL. Run the buffer's SQL file against your game DB with a client like DBeaver or HeidiSQL. This registers the NPC and its buff list.
- Add the script. Drop the buffer's script/quest folder into your fork's data script directory and make sure it is enabled in the script list.
- Set the HTML. Copy any provided HTML dialog files into the matching folder so the NPC window shows correctly.
- Reload or restart and spawn it with
//spawn <npc_id>.
Fixing "you do not meet the criteria"
This classic error means the buff-skill rows did not import or the buffer's skill list references skills your pack does not have. Re-run the buff-list part of the SQL and confirm every skill id in it exists in your server's skill data.
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FAQ
How do I fix "you do not meet the criteria"?
The buff-skill rows did not import, or the buffer references skills your pack lacks. Re-run the buff-list SQL and check the skill ids.
Does the chronicle matter?
Yes — use a buffer built for your chronicle (an Interlude buffer will not work cleanly on High Five).
Are community buffers core or script based?
Most are script/quest based, so you import SQL and drop in the script folder.