Get the schema of a table or materialized view
AI agents call retrieve_internal_table_schema to retrieve information from Kusto MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns table/view schema metadata without side effects. It is purely informational and read-only, matching the Read category definition of 'retrieves or queries data; no side effects (search, list, get, fetch)'. Severity is low because disclosure of schema alone does not expose sensitive data content and has minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'retrieve_internal_table_schema' and description 'Get the schema of a table or materialized view' indicate schema introspection only. No modification, execution, or data retrieval occurs—only structural metadata is returned.
Attacks that exploit this kind of access
Get the schema of a table or materialized view. It is categorised as a Read tool in the Kusto MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Kusto MCP Server MCP server in PolicyLayer and add a rule for retrieve_internal_table_schema: 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 Kusto MCP Server. Nothing to install.
retrieve_internal_table_schema is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the retrieve_internal_table_schema 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 retrieve_internal_table_schema. 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.
retrieve_internal_table_schema is provided by the Kusto MCP Server MCP server (zzzhdw/mcp-server-kusto). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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