visualize_aggregate
Build a real-time chart of ServiceNow records grouped by a field (e.g. incidents by priority, cases by state). Returns chart-ready data, a Teams Adaptive Card (Chart.*) to drop into a Copilot Studio
This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/visualize-aggregate.md
What visualize_aggregate does on NowAIKit — ServiceNow AI Toolkit
AI agents call visualize_aggregate to retrieve information from NowAIKit — ServiceNow AI Toolkit without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why visualize_aggregate is rated Low
This tool queries and aggregates ServiceNow records to produce chart data and an Adaptive Card payload. It only reads and groups existing data; it does not create, modify, delete, or trigger any operations. The output is a visualization artifact, making this a Read category tool with low severity.
From the tool's definition 'Build a real-time chart of ServiceNow records grouped by a field' and 'Returns chart-ready data' — purely retrieves and aggregates data for visualization with no side effects
Attacks that exploit this kind of access
The rule that runs visualize_aggregate 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 visualize_aggregate, this is the rule to start with:
visualize_aggregate is read-only, so it stays allowed. 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 visualize_aggregate call is checked against it from then on.
Questions about visualize_aggregate
Build a real-time chart of ServiceNow records grouped by a field (e.g. incidents by priority, cases by state). Returns chart-ready data, a Teams Adaptive Card (Chart.*) to drop into a Copilot Studio. It is categorised as a Read tool in the NowAIKit — ServiceNow AI Toolkit MCP Server, which means it retrieves data without modifying state.
Register the NowAIKit — ServiceNow AI Toolkit MCP server in PolicyLayer and add a rule for visualize_aggregate: 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.
visualize_aggregate is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the visualize_aggregate 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 visualize_aggregate. 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.
visualize_aggregate 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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