snow_create_processor · Serac MCP: Risk & Policy

WHAT IT DOES

What snow_create_processor does on Serac

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

WHY IT NEEDS A POLICY

Why snow_create_processor needs a policy

This tool creates a new script processor in ServiceNow, which is a reversible write operation that modifies the system state. While the created processor could potentially execute code, the tool itself is primarily performing data creation/configuration rather than direct code execution.

From the tool's definition Tool name 'snow_create_processor' and description 'Create script processor' indicate creation of a new script processor object in ServiceNow. The parenthetical '(ES5 only!)' confirms this creates executable script resources.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

snow_create_processor Rate-limited

snow_create_processor 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": {
    "snow_create_processor": {
      "limits": [
        {
          "counter": "snow_create_processor_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 Serac, so you can run agents against it safely.

FAQ

Questions about snow_create_processor

What does the snow_create_processor tool do? +

Create script processor (ES5 only!). It is categorised as a Write tool in the Serac MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on snow_create_processor? +

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

What risk level is snow_create_processor? +

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

Can I rate-limit snow_create_processor? +

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

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

snow_create_processor is provided by the Serac MCP server (serac-labs/serac). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.