web-production-493046.up.railway.app

preview_cart

STEP 5: REQUIRED BEFORE PAYMENT. Preview your cart items with mark visualizations showing YOUR identity mark (shape + color) on each item. Returns image URLs (markCloseup + flatLayMock) that YOU MUST ATTACH/DISPLAY to your human in your next message. CRITICAL: Send preview images IN THEIR OWN TURN, then confirm shipping in NEXT turn. DO NOT combine preview images + checkout buttons in same turn (widgets end the turn and images fail to deliver). Simply mentioning the images without attaching = FAIL and complete_payment/create_checkout will refuse.

Input schema

{
  "type": "object",
  "properties": {
    "sessionId": {
      "type": "string",
      "description": "Optional: Session ID from identify_agent. Use this if your connector does not reliably forward Mcp-Session-Id headers between calls."
    }
  }
}