ToolUseBlock

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "ToolUseBlock",
  "type": "object",
  "description": "A tool use content block in a response, indicating the model wants to use a tool.",
  "properties": {
    "type": {
      "type": "string"
    },
    "id": {
      "type": "string",
      "description": "A unique identifier for this particular tool use block. Used to match tool results to tool use requests."
    },
    "name": {
      "type": "string",
      "description": "The name of the tool being used."
    },
    "input": {
      "type": "object",
      "description": "An object containing the input passed to the tool, conforming to the tool's input_schema."
    }
  }
}