Xóa cache để reload metadata từ Redmine
AI agents call clear_cache to permanently remove resources in Redmine — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Clearing a cache is a destructive, non-reversible operation that removes stored data. While the blast radius is moderate (cache can be repopulated from Redmine), the act itself cannot be undone. It falls under Destructive rather than Write because the data is deleted rather than modified.
From the tool's definition 'Xóa cache' translates to 'Delete/Clear cache' and 'reload metadata từ Redmine' means reload metadata from Redmine — the action irreversibly clears cached data
Attacks that exploit this kind of access
Xóa cache để reload metadata từ Redmine. It is categorised as a Destructive tool in the Redmine MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Redmine MCP server in PolicyLayer and add a rule for clear_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 Redmine. Nothing to install.
clear_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_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_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_cache is provided by the Redmine MCP server (xukaaaa/redmine-mcp-server). 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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