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delete_table_column_tool

Remove specified columns from Google Sheets tables to clean data or restructure layouts. The tool deletes selected columns and shifts remaining columns left automatically.

Instructions

Delete specific columns from a table in Google Sheets.

This tool removes the specified columns from the table and updates the table structure
accordingly. The remaining columns will be shifted left to fill the gaps.

Args:
    spreadsheet_name: Name of the spreadsheet
    sheet_name: Name of the sheet containing the table
    table_name: Name of the table to delete columns from
    column_names: List of column names to delete

Returns:
    JSON string with operation results

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
spreadsheet_nameYesThe name of the Google Spreadsheet
sheet_nameYesThe name of the sheet containing the table
table_nameYesName of the table to delete columns from
column_namesYesList of column names to delete from the table

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Implementation Reference

  • MCP tool handler function for delete_table_column_tool. Includes schema definitions via Pydantic Fields, docstring, and delegates to core handler. Also serves as registration via @mcp.tool().
    @mcp.tool()
    def delete_table_column_tool(
        spreadsheet_name: str = Field(..., description="The name of the Google Spreadsheet"),
        sheet_name: str = Field(..., description="The name of the sheet containing the table"),
        table_name: str = Field(..., description="Name of the table to delete columns from"),
        column_names: List[str] = Field(..., description="List of column names to delete from the table")
    ) -> str:
        """
        Delete specific columns from a table in Google Sheets.
        
        This tool removes the specified columns from the table and updates the table structure
        accordingly. The remaining columns will be shifted left to fill the gaps.
        
        Args:
            spreadsheet_name: Name of the spreadsheet
            sheet_name: Name of the sheet containing the table
            table_name: Name of the table to delete columns from
            column_names: List of column names to delete
        
        Returns:
            JSON string with operation results
        """
        sheets_service, drive_service = _get_google_services()
        return delete_table_column_handler(
            drive_service,
            sheets_service,
            spreadsheet_name,
            sheet_name,
            table_name,
            column_names
        )
  • Core helper function implementing the logic to delete table columns using Google Sheets API: validates inputs, retrieves table info, deletes column ranges, updates table properties, and handles errors.
    def delete_table_column_handler(
        drive_service,
        sheets_service,
        spreadsheet_name: str,
        sheet_name: str,
        table_name: str,
        column_names: List[str]
    ) -> str:
        """
        Delete specific columns from a table in Google Sheets.
        
        According to the official Google Sheets API documentation, to delete columns from a table:
        1. Use DeleteRangeRequest to delete the column from the sheet (within the table's range)
        2. Use UpdateTableRequest to update the table's range and column properties to reflect the column removal
        
        Args:
            drive_service: Google Drive service instance
            sheets_service: Google Sheets service instance
            spreadsheet_name: Name of the spreadsheet
            sheet_name: Name of the sheet containing the table
            table_name: Name of the table to delete columns from
            column_names: List of column names to delete
        
        Returns:
            str: Success message with deletion details or error message
        """
        try:
            # Validate inputs
            if not table_name or table_name.strip() == "":
                return compact_json_response({
                    "success": False,
                    "message": "Table name is required."
                })
            
            if not column_names or len(column_names) == 0:
                return compact_json_response({
                    "success": False,
                    "message": "Column names are required. Please provide at least one column name to delete."
                })
            
            # Validate column names
            validated_column_names = []
            invalid_column_names = []
            
            for i, col_name in enumerate(column_names):
                if not col_name or not isinstance(col_name, str) or col_name.strip() == "":
                    invalid_column_names.append({"index": i, "value": col_name, "error": "Column name must be a non-empty string"})
                    continue
                
                validated_column_names.append(col_name.strip())
            
            if invalid_column_names:
                error_messages = [f"Column {item['index']+1} ('{item['value']}'): {item['error']}" for item in invalid_column_names]
                return compact_json_response({
                    "success": False,
                    "message": f"Invalid column names: {'; '.join(error_messages)}",
                    "invalid_column_names": invalid_column_names
                })
            
            if not validated_column_names:
                return compact_json_response({
                    "success": False,
                    "message": "No valid column names provided after validation."
                })
            
            # Remove duplicates
            unique_column_names = list(set(validated_column_names))
            
            # Get spreadsheet ID
            spreadsheet_id = get_spreadsheet_id_by_name(drive_service, spreadsheet_name)
            if not spreadsheet_id:
                return compact_json_response({
                    "success": False,
                    "message": f"Spreadsheet '{spreadsheet_name}' not found."
                })
    
            # Get sheet ID
            sheet_ids = get_sheet_ids_by_names(sheets_service, spreadsheet_id, [sheet_name])
            sheet_id = sheet_ids.get(sheet_name)
            if sheet_id is None:
                return compact_json_response({
                    "success": False,
                    "message": f"Sheet '{sheet_name}' not found in spreadsheet '{spreadsheet_name}'."
                })
            
            # Get table ID
            table_ids = get_table_ids_by_names(sheets_service, spreadsheet_id, sheet_name, [table_name])
            table_id = table_ids.get(table_name)
            if not table_id:
                return compact_json_response({
                    "success": False,
                    "message": f"Table '{table_name}' not found in sheet '{sheet_name}'."
                })
            
            # Get table information
            try:
                table_info = get_table_info(sheets_service, spreadsheet_id, table_id)
                table_range = table_info.get("range", {})
                existing_columns = table_info.get("columns", [])
            except Exception as e:
                return compact_json_response({
                    "success": False,
                    "message": f"Could not retrieve information for table '{table_name}': {str(e)}"
                })
            
            # Get table boundaries
            table_start_row = table_range.get("startRowIndex", 0)
            table_end_row = table_range.get("endRowIndex", 0)
            table_start_col = table_range.get("startColumnIndex", 0)
            table_end_col = table_range.get("endColumnIndex", 0)
            
            # Validate column names exist in the table
            existing_column_names = [col.get("name", "") for col in existing_columns]
            missing_columns = []
            valid_delete_columns = []
            
            for col_name in unique_column_names:
                if col_name not in existing_column_names:
                    missing_columns.append(col_name)
                else:
                    valid_delete_columns.append(col_name)
            
            if missing_columns:
                return compact_json_response({
                    "success": False,
                    "message": f"Column(s) not found in table: {', '.join(missing_columns)}. Available columns: {', '.join(existing_column_names)}",
                    "missing_columns": missing_columns,
                    "available_columns": existing_column_names
                })
            
            if not valid_delete_columns:
                return compact_json_response({
                    "success": False,
                    "message": "No valid columns to delete after validation."
                })
            
            # Check if trying to delete all columns
            if len(valid_delete_columns) >= len(existing_columns):
                return compact_json_response({
                    "success": False,
                    "message": "Cannot delete all columns from a table. At least one column must remain."
                })
            
            # Create requests for deletion and table update
            requests = []
            
            # 1. Delete columns using DeleteRangeRequest (rightmost to leftmost to avoid index shifting)
            # Sort columns by their index in descending order
            columns_to_delete = []
            for col_name in valid_delete_columns:
                for i, col_info in enumerate(existing_columns):
                    if col_info.get("name") == col_name:
                        columns_to_delete.append({
                            "name": col_name,
                            "index": col_info.get("index", i),
                            "api_index": table_start_col + col_info.get("index", i)
                        })
                        break
            
            # Sort by index in descending order for proper deletion
            columns_to_delete.sort(key=lambda x: x["index"], reverse=True)
            
            # Create DeleteRangeRequest for each column
            for col_info in columns_to_delete:
                delete_request = {
                    "deleteRange": {
                        "range": {
                            "sheetId": sheet_id,
                            "startRowIndex": 0,
                            "endRowIndex": table_end_row,
                            "startColumnIndex": col_info["api_index"],
                            "endColumnIndex": col_info["api_index"] + 1
                        },
                        "shiftDimension": "COLUMNS"
                    }
                }
                requests.append(delete_request)
            
            # 2. Update table with new column properties
            # Build new column properties array (excluding deleted columns)
            new_column_properties = []
            remaining_columns = []
            
            for col_info in existing_columns:
                if col_info.get("name") not in valid_delete_columns:
                    remaining_columns.append(col_info)
            
            # Convert remaining columns to API format and update indices
            for i, col_info in enumerate(remaining_columns):
                api_col_prop = {
                    "columnIndex": i,
                    "columnName": col_info.get("name", ""),
                    "columnType": col_info.get("type", "TEXT")
                }
                # Preserve dataValidationRule if it exists
                if "dataValidationRule" in col_info:
                    api_col_prop["dataValidationRule"] = col_info["dataValidationRule"]
                new_column_properties.append(api_col_prop)
            
            # Update table range and column properties
            new_end_col = table_end_col - len(valid_delete_columns)
            update_table_request = {
                "updateTable": {
                    "table": {
                        "tableId": table_id,
                        "range": {
                            "sheetId": sheet_id,
                            "startRowIndex": table_start_row,
                            "endRowIndex": table_end_row,
                            "startColumnIndex": table_start_col,
                            "endColumnIndex": new_end_col
                        },
                        "columnProperties": new_column_properties
                    },
                    "fields": "range,columnProperties"
                }
            }
            requests.append(update_table_request)
            
            # Execute the requests
            response = sheets_service.spreadsheets().batchUpdate(
                spreadsheetId=spreadsheet_id,
                body={"requests": requests}
            ).execute()
            
            # Extract response information
            replies = response.get("replies", [])
            deleted_count = len(valid_delete_columns)
            
            response_data = {
                "success": True,
                "spreadsheet_name": spreadsheet_name,
                "sheet_name": sheet_name,
                "table_name": table_name,
                "columns_deleted": deleted_count,
                "deleted_column_names": valid_delete_columns,
                "remaining_column_count": len(new_column_properties),
                "remaining_columns": [col.get("columnName", "") for col in new_column_properties],
                "message": f"Successfully deleted {deleted_count} column(s) from table '{table_name}' in '{sheet_name}'"
            }
            
            return compact_json_response(response_data)
            
        except HttpError as error:
            return compact_json_response({
                "success": False,
                "message": f"Google Sheets API error: {str(error)}"
            })
        except Exception as e:
            return compact_json_response({
                "success": False,
                "message": f"Error deleting table columns: {str(e)}"
            }) 
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden. It discloses the destructive behavior ('removes the specified columns'), structural impact ('updates the table structure accordingly', 'remaining columns will be shifted left'), and return format ('JSON string with operation results'). However, it lacks details on permissions, error conditions, or rate limits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is appropriately sized and front-loaded: the first sentence states the core purpose, followed by behavioral details and parameter/return sections. However, the Args and Returns sections are somewhat redundant given the schema coverage, and the structure could be more streamlined.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (destructive operation with 4 parameters), no annotations, but with 100% schema coverage and an output schema, the description is reasonably complete. It covers purpose, behavior, and parameters, though it could better address usage context and error handling.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all parameters. The description adds minimal value by listing parameters in the Args section but doesn't provide additional semantics beyond what's in the schema (e.g., format of column_names, validation rules). Baseline is 3, but the explicit parameter listing slightly enhances clarity.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with a specific verb ('Delete'), resource ('columns from a table in Google Sheets'), and scope ('specific columns'). It distinguishes itself from siblings like 'delete_table_tool' (which deletes entire tables) and 'delete_table_records_tool' (which deletes rows/data).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., table existence), exclusions (e.g., cannot delete all columns), or compare with similar tools like 'update_table_column_name_tool' for column modifications instead of deletions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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