{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/FunctionCallInput",
  "title": "FunctionCallInput",
  "properties": {
    "arguments": {
      "description": "Function arguments (JSON string)",
      "type": "string"
    },
    "call_id": {
      "description": "The call_id that correlates with function_call_output",
      "type": "string"
    },
    "name": {
      "description": "The function name",
      "type": "string"
    },
    "thought_signature": {
      "description": "Base64-encoded signature for thinking models",
      "type": "string"
    },
    "type": {
      "enum": [
        "function_call"
      ],
      "type": "string"
    }
  },
  "required": [
    "type",
    "call_id",
    "name",
    "arguments"
  ],
  "type": "object"
}