list_knowledge_bases

List all knowledge bases available in the instance

SERVERServiceNow MCP Server SOURCE@aartiq/servicenow-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/servicenow-mcp-server/list-knowledge-bases.md

WHAT IT DOES

What list_knowledge_bases does on ServiceNow MCP Server

AI agents call list_knowledge_bases to retrieve information from ServiceNow MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_knowledge_bases is rated Low

This tool retrieves metadata about knowledge bases without creating, modifying, or deleting data. It is a straightforward read operation that queries available resources. The blast radius is minimal—exposure of this tool only reveals what knowledge bases exist in the ServiceNow instance, which is informational and carries low risk.

From the tool's definition 'List all knowledge bases available in the instance' - the verb 'list' indicates retrieval of existing data with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_knowledge_bases 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 list_knowledge_bases, this is the rule to start with:

list_knowledge_bases Allowed

list_knowledge_bases is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_knowledge_bases": {}
  }
}

ALLOW ONLY 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 list_knowledge_bases call is checked against it from then on.

FAQ

Questions about list_knowledge_bases

What does the list_knowledge_bases tool do? +

List all knowledge bases available in the instance. It is categorised as a Read tool in the ServiceNow MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_knowledge_bases? +

Register the ServiceNow MCP Server MCP server in PolicyLayer and add a rule for list_knowledge_bases: 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 list_knowledge_bases? +

list_knowledge_bases is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_knowledge_bases? +

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

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

list_knowledge_bases 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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