Select or deselect all columns in a GuiTableControl. Does NOT work on ALV grids.
AI agents use sap_select_all_table_control_columns to create or update resources in MCP SAP GUI Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP SAP GUI Server environment.
This tool modifies SAP GUI table control state (column selection/visibility), which constitutes a Write operation. It does not execute transactions, delete data, or move money. However, severity is elevated to 'high' because SAP systems control critical business processes (finance, supply chain, HR), and uncontrolled column selection changes could obscure data, trigger downstream workflows, or affect report outputs.
From the tool's definition The tool name and description indicate it 'Select or deselect all columns in a GuiTableControl' — this modifies the state of the table control by changing which columns are visible/selected, which is a reversible data presentation change.
Documented attack patterns abuse exactly the kind of access sap_select_all_table_control_columns gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP SAP GUI Server, and nothing reaches the server without passing your rules. This is the rule we recommend for sap_select_all_table_control_columns:
{
"version": "1",
"default": "deny",
"tools": {
"sap_select_all_table_control_columns": {
"limits": [
{
"counter": "sap_select_all_table_control_columns_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
} sap_select_all_table_control_columns stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Select or deselect all columns in a GuiTableControl. Does NOT work on ALV grids. It is categorised as a Write tool in the MCP SAP GUI Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the MCP SAP GUI Server MCP server in PolicyLayer and add a rule for sap_select_all_table_control_columns: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP SAP GUI Server. Nothing to install.
sap_select_all_table_control_columns is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the sap_select_all_table_control_columns rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for sap_select_all_table_control_columns. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
sap_select_all_table_control_columns is provided by the MCP SAP GUI Server MCP server (kts982/mcp-sap-gui). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP SAP GUI Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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57 MCP SAP GUI Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.