Clear the V MCP server cache.
AI agents call clear_v_cache to permanently remove resources in V Language MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Clearing a cache is an irreversible operation that destroys stored/cached data. While the data itself may be regenerable, the act of purging the cache cannot be undone and falls under Destructive. Severity is medium since cached data is typically reconstructible, but misuse could cause performance degradation or loss of in-progress state.
From the tool's definition 'Clear the V MCP server cache' — clearing a cache irreversibly removes stored data
Attacks that exploit this kind of access
Clear the V MCP server cache. It is categorised as a Destructive tool in the V Language MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the V Language MCP Server MCP server in PolicyLayer and add a rule for clear_v_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 V Language MCP Server. Nothing to install.
clear_v_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_v_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_v_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_v_cache is provided by the V Language MCP Server MCP server (nexlab-one/python-vlang-mcp). 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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