create_subflow

Create a new reusable subflow. [Write]

SERVERNowAIKit — ServiceNow AI Toolkit SOURCEnowaikit

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/create-subflow.md

WHAT IT DOES

What create_subflow does on NowAIKit — ServiceNow AI Toolkit

AI agents use create_subflow 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.

RISK

Why create_subflow is rated Medium

This tool creates new workflow subflows in ServiceNow, which is a reversible write operation. The data can be updated or deleted afterward, making it Write rather than Destructive. The severity is medium because creating subflows could impact business processes, but the effect is confined to workflow definitions and can be undone.

From the tool's definition Tool description explicitly states 'Create a new reusable subflow' with **[Write]** designation. The verb 'create' indicates generation of new data/objects that can be modified or deleted later.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_subflow 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_subflow, this is the rule to start with:

create_subflow Rate-limited

create_subflow 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_subflow": {
      "limits": [
        {
          "counter": "create_subflow_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect NowAIKit — ServiceNow AI Toolkit, apply this rule, and every create_subflow call is checked against it from then on.

FAQ

Questions about create_subflow

What does the create_subflow tool do? +

Create a new reusable subflow. [Write]. 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.

How do I enforce a policy on create_subflow? +

Register the NowAIKit — ServiceNow AI Toolkit MCP server in PolicyLayer and add a rule for create_subflow: 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.

What risk level is create_subflow? +

create_subflow is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_subflow? +

Yes. Add a rate_limit block to the create_subflow 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.

How do I block create_subflow completely? +

Set action: deny in the PolicyLayer policy for create_subflow. 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.

What MCP server provides create_subflow? +

create_subflow 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.

KEEP EXPLORING

More on NowAIKit — ServiceNow AI Toolkit, and thousands of servers like it.

This server

All 410 NowAIKit — ServiceNow AI Toolkit tools →

Across the catalogue

create_task on 0rca Dojo MCP Server →create-task on Kanban MCP Server →create_package_backup on Android Forensics ADB MCP Server →create_project on Stitch MCP Server → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →