AI agents call get_table_schema to retrieve information from AutoCAD MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves schema/structure metadata from a table. It has no side effects, does not modify data, does not execute arbitrary code, and does not delete anything. It is a straightforward read operation typical of introspection or information-gathering utilities. The AutoCAD context and sibling drawing tools are irrelevant to this particular tool's classification.
From the tool's definition Tool name 'get_table_schema' and description '获取指定表的结构信息' (get the structure information of a specified table) indicate a retrieval operation that queries metadata about a table without modifying, deleting, or executing code.
Documented attack patterns abuse exactly the kind of access get_table_schema gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AutoCAD MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_table_schema:
{
"version": "1",
"default": "deny",
"tools": {
"get_table_schema": {}
}
}get_table_schema is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取指定表的结构信息. It is categorised as a Read tool in the AutoCAD MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AutoCAD MCP Server MCP server in PolicyLayer and add a rule for get_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 AutoCAD MCP Server. Nothing to install.
get_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 get_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 get_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.
get_table_schema is provided by the AutoCAD MCP Server MCP server (zh19980811/easy-mcp-autocad). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 19 AutoCAD MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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19 AutoCAD MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.