kerberos_realm_list

List all configured Kerberos realms.

SERVERNasbridge SOURCEmaverick0628/nasbridge

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/nasbridge/kerberos-realm-list.md

WHAT IT DOES

What kerberos_realm_list does on Nasbridge

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

RISK

Why kerberos_realm_list is rated Low

This tool queries and returns information about existing Kerberos realm configurations. It performs no modifications, deletions, or external operations. The action is purely informational, making it a Read category tool with low severity since listing configuration data poses minimal risk even if accessed by an untrusted agent.

From the tool's definition Tool name contains 'list' and description explicitly states 'List all configured Kerberos realms' — a retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs kerberos_realm_list safely

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

kerberos_realm_list Allowed

kerberos_realm_list 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": {
    "kerberos_realm_list": {}
  }
}

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

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

FAQ

Questions about kerberos_realm_list

What does the kerberos_realm_list tool do? +

List all configured Kerberos realms. It is categorised as a Read tool in the Nasbridge MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on kerberos_realm_list? +

Register the Nasbridge MCP server in PolicyLayer and add a rule for kerberos_realm_list: 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 Nasbridge. Nothing to install.

What risk level is kerberos_realm_list? +

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

Can I rate-limit kerberos_realm_list? +

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

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

kerberos_realm_list is provided by the Nasbridge MCP server (maverick0628/nasbridge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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