extension_uninstall
Uninstall an extension from the local registry.
This record as markdown: /tools/io-github-vmoranv-jshookmcp/extension-uninstall.md
What extension_uninstall does on Jshookmcp
AI agents call extension_uninstall to permanently remove resources in Jshookmcp, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why extension_uninstall is rated Critical
Irreversibly removes extensions; cannot be undone without reinstallation.
From the tool's definition Uninstall an extension from the local registry.
Attacks that exploit this kind of access
The rule that runs extension_uninstall safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For extension_uninstall, this is the rule to start with:
extension_uninstall is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every extension_uninstall call is checked against it from then on.
Questions about extension_uninstall
Uninstall an extension from the local registry. It is categorised as a Destructive tool in the Jshookmcp MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Jshook MCP server in PolicyLayer and add a rule for extension_uninstall: 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 Jshookmcp. Nothing to install.
extension_uninstall 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 extension_uninstall 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 extension_uninstall. 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.
extension_uninstall is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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