AI agents call clear_table_structure_cache to permanently remove resources in Docx_MCP_cj — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool clears/purges a cache of table structure data. Clearing a cache is an irreversible operation (the cached data is lost), making it Destructive. However, since caches are typically rebuildable from source data, the blast radius is medium rather than high — it may cause performance degradation or require re-analysis of documents but doesn't destroy primary data.
From the tool's definition 清空表格结构缓存 (Clear/empty table structure cache)
Documented attack patterns abuse exactly the kind of access clear_table_structure_cache gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Docx_MCP_cj, and nothing reaches the server without passing your rules. This is the rule we recommend for clear_table_structure_cache:
{
"version": "1",
"default": "deny",
"hide": [
"clear_table_structure_cache"
]
}clear_table_structure_cache disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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清空表格结构缓存. It is categorised as a Destructive tool in the Docx_MCP_cj MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Docx_MCP_cj MCP server in PolicyLayer and add a rule for clear_table_structure_cache: 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 Docx_MCP_cj. Nothing to install.
clear_table_structure_cache is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the clear_table_structure_cache 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 clear_table_structure_cache. 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.
clear_table_structure_cache is provided by the Docx_MCP_cj MCP server (rockcj/docx_mcp_cj). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 54 Docx_MCP_cj tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
54 Docx_MCP_cj tools catalogued and risk-classified — across an index of 42,500+ MCP servers.