list_ci_classes
AI agents call list_ci_classes to retrieve information from ServiceNow CMDB MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or enumerates CI (Configuration Item) classes from ServiceNow CMDB, which is a read-only query operation with no side effects. The 'list' verb is characteristic of Read category tools. Despite the empty description, the naming convention and broader server context clearly indicate data retrieval. No data is modified, deleted, or executed.
From the tool's definition Tool name 'list_ci_classes' with 'list' prefix indicates data retrieval. Context shows CMDB (Configuration Management Database) querying capabilities.
Attacks that exploit this kind of access
list_ci_classes. It is categorised as a Read tool in the ServiceNow CMDB MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ServiceNow CMDB MCP Server MCP server in PolicyLayer and add a rule for list_ci_classes: 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 CMDB MCP Server. Nothing to install.
list_ci_classes 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_ci_classes 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_ci_classes. 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_ci_classes is provided by the ServiceNow CMDB MCP Server MCP server (ketiil/mcp-cmdb). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list_ci_classes is one line of ServiceNow CMDB MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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