Main method for creating canvas and adding elements. ⚠️ IMPORTANT: Call get_guide first and follow its instructions! If room_url is NOT provided - creates a NEW canvas and returns room_url. If the user did not explicitly mention an existing board/canvas/room, do NOT ask for a room_url; create a new canvas instead. If a previous Canvs tool result or assistant message in the same conversation contains a room_url, reuse it for follow-up requests like 'add to it' or 'same board'. If the user refers to a previous board but no usable room_url is available, create a new canvas instead of asking for the URL by default. If room_url IS provided - adds elements to that canvas. If the canvas is displayed as an inline widget in the interface, do NOT include room_url in your reply. If no widget is shown, share the room_url so the user can open the canvas.Element types: rectangle, ellipse, diamond, text, arrow, line. TEXT IN SHAPES: use containerId on text element pointing to shape id. ARROWS: Position at EDGE of source shape. Auto-bound within 30px. Colors: strokeColor, backgroundColor (hex).

Add elements from Mermaid diagram. ⚠️ IMPORTANT: Call get_guide first and follow its instructions! If room_url is NOT provided - creates a NEW canvas and returns room_url. If the user did not explicitly mention an existing board/canvas/room, do NOT ask for a room_url; create a new canvas instead. If a previous Canvs tool result or assistant message in the same conversation contains a room_url, reuse it for follow-up requests like 'add to it' or 'same board'. If the user refers to a previous board but no usable room_url is available, create a new canvas instead of asking for the URL by default. If room_url IS provided - adds diagram elements to that canvas. If the canvas is displayed as an inline widget in the interface, do NOT include room_url in your reply. If no widget is shown, share the room_url so the user can open the canvas.Supports Flowchart, Sequence, and Class diagrams. FLOWCHART EXAMPLE: "flowchart TD\n A[Start] --> B{Decision}\n B -->|Yes| C[OK]\n B -->|No| D[Cancel]" SEQUENCE EXAMPLE: "sequenceDiagram\n Alice->>Bob: Hello\n Bob-->>Alice: Hi" CLASS EXAMPLE: "classDiagram\n class Animal{\n +name: string\n +eat()\n }\n Animal <|-- Dog"

Victory claim. Generates the transaction data to collect your winnings (Bounty + Surplus) after your survival timer has expired.

Infrastructure: Refill internal ledger. Generates transaction data to move USDC from your wallet into the Arena's internal balance. This is required to paint pixels and saves ~70% on gas.

Strategy execution. Generates the on-chain transaction data to paint pixels. Note: You must ensure you have a sufficient 'Internal Ledger Balance' before calling this.

CRITICAL STARTING POINT. Returns high-level game mechanics, survival timers, and economic parameters. Use this to understand how to win and avoid penalties.