{
  "type": "function",
  "function": {
    "name": "update_task",
    "description": "Update an existing task in the Todozi system. Use this to change status, progress, priority, or other task properties.",
    "parameters": {
      "type": "object",
      "properties": {
        "task_id": {
          "type": "string",
          "description": "ID of the task to update. Required - you must know the specific task ID.",
          "examples": ["task_12345", "abc-123-def-456"]
        },
        "status": {
          "type": "string",
          "enum": ["todo", "in_progress", "blocked", "review", "done"],
          "description": "New status for the task. Use 'done' to complete, 'in_progress' to start working.",
          "examples": ["todo", "in_progress", "blocked", "review", "done"]
        },
        "progress": {
          "type": "number",
          "description": "Progress percentage (0-100). Use this to track completion progress.",
          "minimum": 0,
          "maximum": 100,
          "examples": [25, 50, 75, 100]
        },
        "priority": {
          "type": "string",
          "enum": ["low", "medium", "high", "critical", "urgent"],
          "description": "New priority level for the task.",
          "examples": ["low", "medium", "high", "urgent", "critical"]
        },
        "assignee": {
          "type": "string",
          "enum": ["ai", "human", "collaborative"],
          "description": "Change who is assigned to handle this task.",
          "examples": ["ai", "human", "collaborative"]
        },
        "context": {
          "type": "string",
          "description": "Additional context, notes, or updated requirements for the task.",
          "examples": [
            "Actually, this needs to be done by Friday",
            "Found additional requirements during investigation",
            "Blocked by dependency on user management system"
          ]
        }
      },
      "required": ["task_id"],
      "examples": [
        {
          "description": "Mark a task as completed",
          "example": {
            "task_id": "task_12345",
            "status": "done"
          }
        },
        {
          "description": "Start working on a task",
          "example": {
            "task_id": "abc-123-def-456",
            "status": "in_progress",
            "progress": 25
          }
        },
        {
          "description": "Update task priority and add context",
          "example": {
            "task_id": "task_67890",
            "priority": "urgent",
            "context": "Client meeting moved up to tomorrow morning"
          }
        },
        {
          "description": "Mark task as blocked with explanation",
          "example": {
            "task_id": "xyz-789-abc-123",
            "status": "blocked",
            "context": "Waiting for API documentation from external vendor"
          }
        }
      ]
    }
  }
}