Get a MiniMax API Key
MiniMax offers Token Plan, Credits, and pay-as-you-go. Those key types are not interchangeable.
Step 1: Pick a billing path

Step 2: Sign in
Use platform.minimaxi.com or platform.minimax.io.

Step 3: Subscribe or add Credits


Step 4: Create the matching key

Step 5: Paste into WriteX

Settings → MiniMax → paste the key that matches your plan → Test & save.