Medium Risk

rename_server

Rename server ID (alias)

Part of the Sshmcp server.

rename_server can modify Sshmcp data, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents use rename_server to create or modify resources in Sshmcp. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

Without a policy, an AI agent could call rename_server repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Sshmcp.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "rename_server": {
      "limits": [
        {
          "counter": "rename_server_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

See the full Sshmcp policy for all 21 tools.

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These attack patterns abuse exactly the kind of access rename_server gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so rename_server only ever does what you allow.

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Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.

What does the rename_server tool do? +

Rename server ID (alias). It is categorised as a Write tool in the Sshmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rename_server? +

Register the Ssh MCP server in PolicyLayer and add a rule for rename_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 Sshmcp. Nothing to install.

What risk level is rename_server? +

rename_server is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit rename_server? +

Yes. Add a rate_limit block to the rename_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 rename_server completely? +

Set action: deny in the PolicyLayer policy for rename_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 rename_server? +

rename_server is provided by the Ssh MCP server (@nl4ever/sshmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Sshmcp tool call.

Deterministic rules across all 21 Sshmcp tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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