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Experiment with five source-checked examples, compare the result and take a snippet to your test server. No live server is connected.
NPC shop builder
Connect an NPC placement, ShopManager binding and 16-column inventory.
The inventory uses one verified Pad Helm example. Adapt a validated row for other items; price is not a 17th column. Coordinates must be walkable and map ownership must be correct. Do not duplicate an existing NPC.
Merge the NPC inside existing <NPC>, update the exact ShopManager row and keep one inventory file per ID. New/changed binding: /reload shop then /reload monster during maintenance. Inventory-only edit: /reload shop.
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Built around the supplied MOMU configuration snapshot. Reference entries flag alternate copies and unconfirmed fields. Match the guide to your deployed version; archived packages and live gameplay were not audited by publishing these pages.