Inspect or clear the browser Cache Storage in a tab.
AI agents call cache to permanently remove resources in Nextjs Agent — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool has a dual mode: inspecting cache (Read) and clearing it (Destructive). Per the rules, the most severe applicable category wins. Clearing browser Cache Storage is an irreversible deletion of cached resources, making this Destructive.
From the tool's definition 'Inspect or clear the browser Cache Storage in a tab' — the 'clear' operation irreversibly removes cached data
Attacks that exploit this kind of access
Inspect or clear the browser Cache Storage in a tab. It is categorised as a Destructive tool in the Nextjs Agent MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Nextjs Agent MCP server in PolicyLayer and add a rule for 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 Nextjs Agent. Nothing to install.
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 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 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.
cache is provided by the Nextjs Agent MCP server (zohaib3249/nextjs-agent-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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