aggregate_report
Server-side aggregate REPORT grouped by a field, in ONE query with no 1000-row truncation. Returns per-group record count PLUS averages/sums/mins/maxes of numeric or duration fields — the right tool for a periodic summary like
This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/aggregate-report.md
What aggregate_report does on NowAIKit — ServiceNow AI Toolkit
AI agents call aggregate_report 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 aggregate_report is rated Low
Even though aggregate_report only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs aggregate_report 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 aggregate_report, this is the rule to start with:
aggregate_report 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 aggregate_report call is checked against it from then on.
Questions about aggregate_report
Server-side aggregate REPORT grouped by a field, in ONE query with no 1000-row truncation. Returns per-group record count PLUS averages/sums/mins/maxes of numeric or duration fields — the right tool for a periodic summary like. 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 aggregate_report: 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.
aggregate_report 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 aggregate_report 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 aggregate_report. 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.
aggregate_report 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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