Get the configuration of a list-type custom field.
AI agents call get_custom_field_list_config to retrieve information from InvGate Service Desk without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves configuration data about custom fields without creating, modifying, deleting, or executing operations. It is a pure read operation with no side effects. Even if the configuration data were sensitive, exposure would not allow unauthorized changes or destructive actions. Severity is low due to limited blast radius of querying configuration metadata.
From the tool's definition Tool name 'get_custom_field_list_config' uses the 'get' verb and description states 'Get the configuration' — both indicate data retrieval without modification. Returns configuration metadata for custom fields.
Attacks that exploit this kind of access
Get the configuration of a list-type custom field. It is categorised as a Read tool in the InvGate Service Desk MCP Server, which means it retrieves data without modifying state.
Register the InvGate Service Desk MCP server in PolicyLayer and add a rule for get_custom_field_list_config: 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 InvGate Service Desk. Nothing to install.
get_custom_field_list_config 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_custom_field_list_config 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_custom_field_list_config. 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_custom_field_list_config is provided by the InvGate Service Desk MCP server (oci:ghcr.io/tracegazer/invgate-service-desk-mcp:0.2.0). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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