List field-level mappings within a Transform Map
AI agents call list_transform_field_maps 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 metadata about Transform Map field mappings in ServiceNow. It performs a read-only operation with no side effects—it does not create, modify, delete, or execute any actions. The verb 'list' is a clear indicator of data retrieval. Even in a misconfigured or sensitive context, exposing this configuration metadata poses minimal risk compared to tools that modify records or execute code.
From the tool's definition Tool name 'list_transform_field_maps' and description 'List field-level mappings within a Transform Map' indicate a query/retrieval operation that returns existing configuration data without modification.
Attacks that exploit this kind of access
List field-level mappings within a Transform Map. 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 list_transform_field_maps: 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.
list_transform_field_maps 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 list_transform_field_maps 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 list_transform_field_maps. 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.
list_transform_field_maps 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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