Get full details and script body of a client script (requires SCRIPTING_ENABLED=true)
AI agents call get_client_script to retrieve information from ServiceNow-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays the source code of client-side scripts stored in ServiceNow. While it is a Read operation (no data modification), the severity is elevated to medium because exposing script source code could leak sensitive business logic, authentication mechanisms, API keys, or other proprietary information embedded in client scripts.
From the tool's definition Tool name 'get_client_script' and description 'Get full details and script body of a client script' indicate retrieval of script content without modification. The mention of 'SCRIPTING_ENABLED=true' flag confirms this is a read-only query operation.
Attacks that exploit this kind of access
Get full details and script body of a client script (requires SCRIPTING_ENABLED=true). It is categorised as a Read tool in the ServiceNow-MCP MCP Server, which means it retrieves data without modifying state.
Register the ServiceNow- MCP server in PolicyLayer and add a rule for get_client_script: 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. Nothing to install.
get_client_script 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 get_client_script 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 get_client_script. 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.
get_client_script is provided by the ServiceNow- MCP server (tedorigawa001/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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