item_add_comment · ArcGIS MCP: Risk & Policy

WHAT IT DOES

What item_add_comment does on ArcGIS MCP

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

WHY IT NEEDS A POLICY

Why item_add_comment needs a policy

Adding a comment creates new data in the ArcGIS system reversibly (comments can typically be deleted or edited). This is a Write operation rather than Read (retrieves data) or Destructive (irreversible deletion). Severity is medium because comment spam or inappropriate content could degrade user experience and platform integrity, but the blast radius is limited compared to destructive operations.

From the tool's definition Tool name 'item_add_comment' indicates creation of a comment entity associated with an ArcGIS item. No description provided, but the naming pattern clearly suggests a write operation that creates new data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

item_add_comment Rate-limited

item_add_comment 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": {
    "item_add_comment": {
      "limits": [
        {
          "counter": "item_add_comment_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 ArcGIS MCP, so you can run agents against it safely.

FAQ

Questions about item_add_comment

What does the item_add_comment tool do? +

item_add_comment. It is categorised as a Write tool in the ArcGIS 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 item_add_comment? +

Register the ArcGIS MCP server in PolicyLayer and add a rule for item_add_comment: 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 ArcGIS MCP. Nothing to install.

What risk level is item_add_comment? +

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

Can I rate-limit item_add_comment? +

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

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

item_add_comment is provided by the ArcGIS MCP server (renemorenow/arcgis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.