1. How to Start
- Open Pet Simulator 99 in Roblox and open any merchant window you want.
- Open AHK Vault, choose Pet Simulator 99 and launch Merchant Buyer.
- Press
F1to start.F2pauses andF3exits.
A pass walks every merchant slot once, then starts again.
2. Buying Settings
- Delay between purchases: time between buy clicks.
- Max attempts per pass: how many tries each pass gets.
- Reset after idle: restarts the pass after it has been idle that long.
- Skip greyed-out items: ignores items you cannot buy.
- Dismiss popups automatically: handles confirmation popups.
3. Several Windows
The Clients tab can resize your Roblox windows on start and rename them so you can tell them apart. The panel lists each window and how many items it has bought.
Read our safety guide before long sessions.

