The `_ConvertTimestamps` tool fails validation with the error

[chuangshizhiqiang]

Bug Report

Description

The _ConvertTimestamps tool fails validation with the error:

Environment

• MCP Server: alibabacloud-dataworks-mcp-server
• Region: cn-internal
• Error occurs during tool validation phase

Expected Behavior

All tool parameters should conform to MCP protocol requirements, specifically array-type parameters must include an items property defining the array element schema.

Actual Behavior

The _ConvertTimestamps tool definition contains array-type parameters without the required items property, causing validation failure.

Suggested Fix

Update the tool definition to include proper items schema for array parameters:

{
  "type": "array",
  "items": {
    "type": "string"  // or appropriate type
  }
}