This record as markdown: /tools/serac/snow-create-processor.md
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 snow_create_processor is rated Medium
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
The rule that runs snow_create_processor safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Serac, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For snow_create_processor, this is the rule to start with:
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.
The button opens the PolicyLayer dashboard: create your workspace, connect Serac, apply this rule, and every snow_create_processor call is checked against it from then on.
Questions about snow_create_processor
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.
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.
snow_create_processor is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
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.
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.
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.
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