gcp_compute_get_serial_port_output

Get serial port output of a VM (for debugging)

SERVERGCP MCP Server SOURCEahmedselimmansor-ctrl/gcp_mcp_server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-get-serial-port-output.md

WHAT IT DOES

What gcp_compute_get_serial_port_output does on GCP MCP Server

AI agents call gcp_compute_get_serial_port_output to retrieve information from GCP MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why gcp_compute_get_serial_port_output is rated Low

This tool retrieves diagnostic information (serial port output) from a VM instance, which is a read-only operation. However, severity is elevated to 'medium' rather than 'low' because serial port output may contain sensitive debugging information (credentials, API keys, internal system state, configuration details) that could be exposed to an unauthorized AI agent.

From the tool's definition Tool description states 'Get serial port output of a VM (for debugging)' — a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs gcp_compute_get_serial_port_output safely

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

gcp_compute_get_serial_port_output Allowed

gcp_compute_get_serial_port_output is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "gcp_compute_get_serial_port_output": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about gcp_compute_get_serial_port_output

What does the gcp_compute_get_serial_port_output tool do? +

Get serial port output of a VM (for debugging). It is categorised as a Read tool in the GCP MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on gcp_compute_get_serial_port_output? +

Register the GCP MCP Server MCP server in PolicyLayer and add a rule for gcp_compute_get_serial_port_output: 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 GCP MCP Server. Nothing to install.

What risk level is gcp_compute_get_serial_port_output? +

gcp_compute_get_serial_port_output is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit gcp_compute_get_serial_port_output? +

Yes. Add a rate_limit block to the gcp_compute_get_serial_port_output 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 gcp_compute_get_serial_port_output completely? +

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

gcp_compute_get_serial_port_output is provided by the GCP MCP Server MCP server (ahmedselimmansor-ctrl/gcp_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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