create_realm_ruleset · OpenRemote MCP Server MCP

WHAT IT DOES

What create_realm_ruleset does on OpenRemote MCP Server

AI agents use create_realm_ruleset to create or update resources in OpenRemote MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OpenRemote MCP Server environment.

WHY IT NEEDS A POLICY

Why create_realm_ruleset needs a policy

The tool creates a new ruleset at the realm level, which is a write operation that modifies system state and persists data. However, it is reversible (rulesets can be deleted via the sibling delete_realm_ruleset tool), and rulesets control automation/rule execution rather than directly moving money or destructively deleting data.

From the tool's definition Tool name contains 'create' and description states 'Create a new realm ruleset. Returns the ID of the created ruleset.' This explicitly describes creating a new resource (a ruleset) that modifies the system configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_realm_ruleset Rate-limited

create_realm_ruleset stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_realm_ruleset": {
      "limits": [
        {
          "counter": "create_realm_ruleset_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches OpenRemote MCP Server, so you can run agents against it safely.

FAQ

Questions about create_realm_ruleset

What does the create_realm_ruleset tool do? +

Create a new realm ruleset. Returns the ID of the created ruleset. It is categorised as a Write tool in the OpenRemote MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_realm_ruleset? +

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

What risk level is create_realm_ruleset? +

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

Can I rate-limit create_realm_ruleset? +

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

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

create_realm_ruleset is provided by the OpenRemote MCP Server MCP server (openremote/service-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.