update_knowledge_article · ServiceNow- MCP: Risk & Policy

WHAT IT DOES

What update_knowledge_article does on ServiceNow-MCP

AI agents use update_knowledge_article to create or update resources in ServiceNow-MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ServiceNow-MCP environment.

WHY IT NEEDS A POLICY

Why update_knowledge_article needs a policy

This tool modifies existing knowledge articles in ServiceNow, which is a reversible change. While updates can affect documentation used across an organization (potentially impacting many users), the action is not destructive (can be reverted), does not execute arbitrary code, and does not involve financial transactions.

From the tool's definition Tool name 'update_knowledge_article' and description 'Update a knowledge article' indicate modification of existing data. The requirement 'WRITE_ENABLED=true' confirms this is a write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_knowledge_article Rate-limited

update_knowledge_article stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_knowledge_article": {
      "limits": [
        {
          "counter": "update_knowledge_article_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches ServiceNow-MCP, so you can run agents against it safely.

FAQ

Questions about update_knowledge_article

What does the update_knowledge_article tool do? +

Update a knowledge article (requires WRITE_ENABLED=true). It is categorised as a Write tool in the ServiceNow-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_knowledge_article? +

Register the ServiceNow- MCP server in PolicyLayer and add a rule for update_knowledge_article: 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.

What risk level is update_knowledge_article? +

update_knowledge_article is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_knowledge_article? +

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

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

update_knowledge_article 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.