mcp_uninstall

Remove an MCP server

SERVER1MCP Server SOURCE1mcp-app/agent

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/1mcp-app-agent/mcp-uninstall.md

WHAT IT DOES

What mcp_uninstall does on 1MCP Server

AI agents call mcp_uninstall to permanently remove resources in 1MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why mcp_uninstall is rated Critical

Uninstalling an MCP server is a destructive operation that cannot be reversed without re-installing. While not as severe as deleting user data, removing infrastructure components that other tools depend on constitutes a destructive action with potential to disrupt service availability.

From the tool's definition The tool 'mcp_uninstall' is explicitly described as 'Remove an MCP server', which irreversibly deletes or uninstalls a server instance. This action cannot be easily undone and results in the permanent removal of a server configuration.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mcp_uninstall safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 1MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mcp_uninstall, this is the rule to start with:

mcp_uninstall Hidden

mcp_uninstall is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "mcp_uninstall"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect 1MCP Server, apply this rule, and every mcp_uninstall call is checked against it from then on.

FAQ

Questions about mcp_uninstall

What does the mcp_uninstall tool do? +

Remove an MCP server. It is categorised as a Destructive tool in the 1MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on mcp_uninstall? +

Register the 1MCP Server MCP server in PolicyLayer and add a rule for mcp_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 1MCP Server. Nothing to install.

What risk level is mcp_uninstall? +

mcp_uninstall is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit mcp_uninstall? +

Yes. Add a rate_limit block to the mcp_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.

How do I block mcp_uninstall completely? +

Set action: deny in the PolicyLayer policy for mcp_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.

What MCP server provides mcp_uninstall? +

mcp_uninstall is provided by the 1MCP Server MCP server (1mcp-app/agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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