update_ui_action

Update an existing UI Action (requires SCRIPTING_ENABLED=true)

SERVERServiceNow MCP Server SOURCE@aartiq/servicenow-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/servicenow-mcp-server/update-ui-action.md

WHAT IT DOES

What update_ui_action does on ServiceNow MCP Server

AI agents invoke update_ui_action to trigger actions in ServiceNow MCP Server. 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.

RISK

Why update_ui_action is rated High

UI Actions in ServiceNow contain server-side or client-side scripts that execute when triggered. Updating a UI Action means modifying executable code/scripts in the platform. The explicit requirement for SCRIPTING_ENABLED=true confirms this involves scripting/code execution capabilities.

From the tool's definition 'Update an existing UI Action (requires SCRIPTING_ENABLED=true)' — modifies UI Actions which contain executable scripts in ServiceNow

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_ui_action safely

PolicyLayer is an MCP gateway: it sits between your AI agents and ServiceNow MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_ui_action, this is the rule to start with:

update_ui_action Rate-limited

update_ui_action 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_ui_action": {
      "limits": [
        {
          "counter": "update_ui_action_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect ServiceNow MCP Server, apply this rule, and every update_ui_action call is checked against it from then on.

FAQ

Questions about update_ui_action

What does the update_ui_action tool do? +

Update an existing UI Action (requires SCRIPTING_ENABLED=true). It is categorised as a Execute tool in the ServiceNow MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on update_ui_action? +

Register the ServiceNow MCP Server MCP server in PolicyLayer and add a rule for update_ui_action: 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 ServiceNow MCP Server. Nothing to install.

What risk level is update_ui_action? +

update_ui_action is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit update_ui_action? +

Yes. Add a rate_limit block to the update_ui_action 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 update_ui_action completely? +

Set action: deny in the PolicyLayer policy for update_ui_action. 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 update_ui_action? +

update_ui_action is provided by the ServiceNow MCP Server MCP server (@aartiq/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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