check_guacamole

Check Apache Guacamole clientless remote desktop gateway via GET /guacamole/api/ (returns API version). path: context path if non-default (e.g. '/guacamole').

SERVERMcp Nettools SOURCEaaronckj/mcp-nettools

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/aaronckj-mcp-nettools/check-guacamole.md

WHAT IT DOES

What check_guacamole does on Mcp Nettools

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

RISK

Why check_guacamole is rated Low

This tool queries the Apache Guacamole API to retrieve version information via HTTP GET. While it is fundamentally a Read operation (no data modification), the medium severity reflects that probing remote desktop gateway services could enable reconnaissance of internal infrastructure, identify exploitable versions, or assist in planning attacks against remote access systems.

From the tool's definition Tool description states it performs a GET request to check API version at /guacamole/api/, which is a read-only query operation that retrieves information without modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs check_guacamole safely

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

check_guacamole Allowed

check_guacamole 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": {
    "check_guacamole": {}
  }
}

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

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

FAQ

Questions about check_guacamole

What does the check_guacamole tool do? +

Check Apache Guacamole clientless remote desktop gateway via GET /guacamole/api/ (returns API version). path: context path if non-default (e.g. '/guacamole'). It is categorised as a Read tool in the Mcp Nettools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on check_guacamole? +

Register the Mcp Nettools MCP server in PolicyLayer and add a rule for check_guacamole: 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 Mcp Nettools. Nothing to install.

What risk level is check_guacamole? +

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

Can I rate-limit check_guacamole? +

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

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

check_guacamole is provided by the Mcp Nettools MCP server (aaronckj/mcp-nettools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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