jsm.updatePortalCustomization · Gojira MCP: Risk & Policy

WHAT IT DOES

What jsm.updatePortalCustomization does on Gojira

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

WHY IT NEEDS A POLICY

Why jsm.updatePortalCustomization needs a policy

This tool creates or modifies portal customization settings reversibly. It does not execute arbitrary code, delete data irreversibly, or move money. However, it can affect customer-facing portal appearance and configuration, which impacts multiple users and is therefore medium severity rather than low.

From the tool's definition Tool name contains 'update' and description states 'Update a portal', indicating modification of existing portal configuration/customization data in Jira Service Management.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

jsm.updatePortalCustomization Rate-limited

jsm.updatePortalCustomization 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": {
    "jsm.updatePortalCustomization": {
      "limits": [
        {
          "counter": "jsm.updateportalcustomization_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 Gojira, so you can run agents against it safely.

FAQ

Questions about jsm.updatePortalCustomization

What does the jsm.updatePortalCustomization tool do? +

Update a portal. It is categorised as a Write tool in the Gojira MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on jsm.updatePortalCustomization? +

Register the Gojira MCP server in PolicyLayer and add a rule for jsm.updatePortalCustomization: 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 Gojira. Nothing to install.

What risk level is jsm.updatePortalCustomization? +

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

Can I rate-limit jsm.updatePortalCustomization? +

Yes. Add a rate_limit block to the jsm.updatePortalCustomization 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 jsm.updatePortalCustomization completely? +

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

jsm.updatePortalCustomization is provided by the Gojira MCP server (windoze95/gojira-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.