switch_instance
Switch the active ServiceNow instance for this session
This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/switch-instance.md
What switch_instance does on NowAIKit — ServiceNow AI Toolkit
AI agents use switch_instance 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 switch_instance is rated Medium
This tool modifies the session state by changing which ServiceNow instance is being targeted. It is a Write-level action (modifying session configuration), not destructive or financial, but misuse could redirect an AI agent's subsequent operations to an unintended or unauthorized ServiceNow instance, potentially causing downstream harm.
From the tool's definition Switch the active ServiceNow instance for this session
Attacks that exploit this kind of access
The rule that runs switch_instance 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 switch_instance, this is the rule to start with:
switch_instance 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 switch_instance call is checked against it from then on.
Questions about switch_instance
Switch the active ServiceNow instance for this session. 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 switch_instance: 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.
switch_instance 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 switch_instance 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 switch_instance. 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.
switch_instance 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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