AI agents use snow_role_group_manage 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.
The tool creates roles and groups and assigns them, which modifies the authorization and identity management system. While these are reversible (not Destructive), they are Write operations with high blast radius because unauthorized role creation or assignment could escalate privileges or grant unintended access across the enterprise ServiceNow instance.
From the tool's definition Tool description states 'create_role, assign_role, create_group' — all operations that create or modify identity/authorization data in ServiceNow. These are reversible write operations on sensitive administrative objects.
Attacks that exploit this kind of access
Unified role and group management (create_role, assign_role, create_group). 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_role_group_manage: 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_role_group_manage 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_role_group_manage 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_role_group_manage. 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_role_group_manage 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.
snow_role_group_manage is one line of Serac's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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