Merchants are the residents of your base
6
Six merchants can move in
Bearded Merchant, Cloaked Merchant, Fishing Merchant, Brave Merchant, Otherworldly Merchant, Seasonal Merchant. Each one has an item that summons them.
Place it in a valid room
Put a bed in a walled room of 64 tiles or less, leave at least 1 free floor tile, and place the summoning item.
25-35 min
Their stock refreshes
Even after selling out, their stock refills every 25-35 minutes. They may not arrive right away, so give it a little time.
All residents (merchants) and their summoning items
| Merchant | Summoning item | Mainly sells |
|---|---|---|
| Bearded Merchant |  Slime Oil Idol |
Basic materials, ores, larva meat and similar |
| Cloaked Merchant |  Mysterious Idol |
Gear, boss summoning items, rare materials and weapon parchments |
| Fishing Merchant |  Pile of Chum Idol |
Fish, fishing bait and fishing gear |
| Brave Merchant |  Nuclear Battery Idol |
A wide variety (including rare radioactive items) |
| Otherworldly Merchant |  Void Idol |
Next-tier stations, potions, boss scanners and more |
| Seasonal Merchant |  Seasonal Calendar |
Seasonal event goods (traded for items and materials, not Ancient Coins) |
How to get each summoning item is in the "How to get" section of its item page.
Room requirements for merchants
- Enclose it with walls: leave no gaps. Doors count as walls.
- 64 tiles or less inside: 8×8 is one shape that hits the limit exactly (any shape works).
- Place a bed: anywhere in the room. It can be the same bed you use as your respawn point.
- At least 1 free floor tile: this is where the merchant appears. Don't block it with furniture.
- Lights and doors are optional.
For step-by-step building see how to build a house (room).
How merchant stock refreshes
Merchants have limited stock, which refills every 25-35 minutes (it varies by merchant). Activating the Ghorm statue, the Malugaz statue or the Core, or defeating the Core Commander for the first time, refills every merchant's stock immediately.
Mechanics from the Core Keeper Wiki (Fandom) page "Merchants" (CC BY-SA 3.0), which cites the Explorer's Guide 1.3 pp. 65-66.
Unless a note on the page says otherwise, numbers are read from the game files of Core Keeper 1.3.0.6 (prefabs, configuration files, drop tables and the game's program) and calculated by this site, including upgraded (per-level) values, sell prices and mana costs. Names and descriptions are the game's official English text. Only reinforcing materials, minion and pet attacks and some food values are based on the Core Keeper Wiki (Fandom) data (CC BY-SA 3.0). Core Keeper and its images are © Pugstorm. This is an unofficial fan site.