[
  {
    "name": "render_ui",
    "description": "Render an interactive UI widget in the chat. Supports two modes: (1) raw HTML — provide html_content to render custom HTML/CSS/JS, (2) external URL — provide url to embed an external webpage in an iframe. Use html_content OR url, not both.",
    "inputSchema": {
      "type": "object",
      "properties": {
        "title": {
          "type": "string",
          "description": "A descriptive title for the UI widget"
        },
        "html_content": {
          "type": "string",
          "description": "Complete HTML content to render. Can include inline CSS and JavaScript within <style> and <script> tags. Use this OR url, not both."
        },
        "url": {
          "type": "string",
          "description": "External URL to embed in an iframe. Use this OR html_content, not both."
        },
        "width": {
          "type": "string",
          "description": "CSS width for the iframe. Default: '100%'",
          "default": "100%"
        },
        "height": {
          "type": "string",
          "description": "CSS height for the iframe. Default: '400px'",
          "default": "400px"
        }
      },
      "required": ["title", "html_content"]
    }
  },
  {
    "name": "ask_user",
    "description": "Present questions with selectable options to the user. CRITICAL: Every question MUST have at least 2 options in the options array — generate reasonable suggestions based on context. Do NOT call this tool with empty options arrays. See the ask_user usage guide in system prompt for detailed rules.",
    "inputSchema": {
      "type": "object",
      "properties": {
        "questions": {
          "type": "array",
          "description": "Array of questions to ask the user. Each question is an object with its own question text, options, and multi_select setting.",
          "items": {
            "type": "object",
            "properties": {
              "question": {
                "type": "string",
                "description": "The question to ask the user"
              },
              "options": {
                "type": "array",
                "minItems": 2,
                "items": {
                  "type": "string"
                },
                "description": "REQUIRED array with at least 2 options. Put choices here, NOT in the question text."
              },
              "multi_select": {
                "type": "boolean",
                "description": "If true, the user can select multiple options for this question. Default: false.",
                "default": false
              }
            },
            "required": ["question", "options"]
          }
        }
      },
      "required": ["questions"]
    }
  }
]