libi.restart_mcp_server

SERVERLibi SOURCENagellabs/libi

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/libi/libi.restart-mcp-server.md

WHAT IT DOES

What libi.restart_mcp_server does on Libi

AI agents invoke libi.restart_mcp_server to trigger actions in Libi. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why libi.restart_mcp_server is rated High

Restarts MCP servers with side effects affecting system state and all bundled services simultaneously.

From the tool's definition Restart a specific bundled MCP server; all bundled MCPs restart together

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs libi.restart_mcp_server safely

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

libi.restart_mcp_server Rate-limited

libi.restart_mcp_server stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "libi.restart_mcp_server": {
      "limits": [
        {
          "counter": "libi.restart_mcp_server_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Libi, apply this rule, and every libi.restart_mcp_server call is checked against it from then on.

FAQ

Questions about libi.restart_mcp_server

What does the libi.restart_mcp_server tool do? +

Restart a specific bundled MCP server. Use after fixing an issue diagnose_mcp surfaced (e.g. installed a missing binary, set an API key). Returns immediately; the restart happens server-side. Per current claude-agent-acp limitations, all bundled MCPs restart together — the tool tells you to ask the user to open a new chat (or re-send) so the new session picks up the rebuilt MCP list. It is categorised as a Execute tool in the Libi MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on libi.restart_mcp_server? +

Register the Libi MCP server in PolicyLayer and add a rule for libi.restart_mcp_server: 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 Libi. Nothing to install.

What risk level is libi.restart_mcp_server? +

libi.restart_mcp_server is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit libi.restart_mcp_server? +

Yes. Add a rate_limit block to the libi.restart_mcp_server 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 libi.restart_mcp_server completely? +

Set action: deny in the PolicyLayer policy for libi.restart_mcp_server. 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 libi.restart_mcp_server? +

libi.restart_mcp_server is provided by the Libi MCP server (Nagellabs/libi). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Libi, and thousands of servers like it.

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Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →