run_tool
Execute a NowAIKit tool by name that is not directly exposed (lean mode). Find the exact name and its parameters with search_tools first, then call it here. Read tools always work; write/scripting/cmdb/atf tools need the connection to have that mode enabled.
This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/run-tool.md
What run_tool does on NowAIKit — ServiceNow AI Toolkit
AI agents invoke run_tool to trigger actions in NowAIKit — ServiceNow AI Toolkit. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why run_tool is rated High
Dynamically executes arbitrary ServiceNow tools with potentially significant side effects depending on mode.
From the tool's definition Execute a NowAIKit tool by name, call it here, write/scripting/cmdb/atf tools
Attacks that exploit this kind of access
The rule that runs run_tool 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 run_tool, this is the rule to start with:
run_tool stays usable, but rate-capped: a runaway agent can't fire it dozens of times 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 run_tool call is checked against it from then on.
Questions about run_tool
Execute a NowAIKit tool by name that is not directly exposed (lean mode). Find the exact name and its parameters with search_tools first, then call it here. Read tools always work; write/scripting/cmdb/atf tools need the connection to have that mode enabled. It is categorised as a Execute tool in the NowAIKit — ServiceNow AI Toolkit MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the NowAIKit — ServiceNow AI Toolkit MCP server in PolicyLayer and add a rule for run_tool: 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.
run_tool is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the run_tool 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 run_tool. 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.
run_tool 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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