AI agents call select_page_item to retrieve information from InDesign MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Selecting a page item changes the UI selection state but does not alter document content, create, modify, or delete any data. It is analogous to a read/query operation in the context of design automation. Severity is low as misuse has minimal blast radius.
From the tool's definition 'Select a specific page item' - selecting an item is a UI state change, but does not modify document data
Documented attack patterns abuse exactly the kind of access select_page_item gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and InDesign MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for select_page_item:
{
"version": "1",
"default": "deny",
"tools": {
"select_page_item": {}
}
}select_page_item is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Select a specific page item. It is categorised as a Read tool in the InDesign MCP Server MCP Server, which means it retrieves data without modifying state.
Register the InDesign MCP Server MCP server in PolicyLayer and add a rule for select_page_item: 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 InDesign MCP Server. Nothing to install.
select_page_item 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 select_page_item 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 select_page_item. 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.
select_page_item is provided by the InDesign MCP Server MCP server (zachshallbetter/indesign-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from InDesign MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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135 InDesign MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.