create_acl
Create a new ACL rule to control access to a table or field (requires SCRIPTING_ENABLED=true)
This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/create-acl.md
What create_acl does on NowAIKit — ServiceNow AI Toolkit
AI agents use create_acl to create or update resources in NowAIKit — ServiceNow AI Toolkit, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your NowAIKit — ServiceNow AI Toolkit environment.
Why create_acl is rated Medium
This tool creates a new Access Control List (ACL) rule, which is a Write operation (creating new data/configuration). However, the severity is high because ACL rules govern security access across tables and fields — misconfigured or maliciously crafted ACL rules could expose sensitive data or lock out legitimate users.
From the tool's definition Create a new ACL rule to control access to a table or field
Attacks that exploit this kind of access
The rule that runs create_acl safely
PolicyLayer is an MCP gateway: it sits between your AI agents and NowAIKit — ServiceNow AI Toolkit, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_acl, this is the rule to start with:
create_acl 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 NowAIKit — ServiceNow AI Toolkit, apply this rule, and every create_acl call is checked against it from then on.
Questions about create_acl
Create a new ACL rule to control access to a table or field (requires SCRIPTING_ENABLED=true). It is categorised as a Write tool in the NowAIKit — ServiceNow AI Toolkit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the NowAIKit — ServiceNow AI Toolkit MCP server in PolicyLayer and add a rule for create_acl: 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 NowAIKit — ServiceNow AI Toolkit. Nothing to install.
create_acl 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 create_acl 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 create_acl. 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.
create_acl is provided by the NowAIKit — ServiceNow AI Toolkit MCP server (nowaikit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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