AI agents use create_page_guides to create or update resources in InDesign MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your InDesign MCP Server environment.
This tool creates guides (non-destructive, reversible document modifications). It does not delete, execute arbitrary code, move money, or critically damage the document. It is Write rather than Read because it actively modifies document structure. Severity is medium because while the changes are reversible, an AI agent could create excessive or malformed guides that degrade usability, requiring manual cleanup.
From the tool's definition create_page_guides creates guides on a page, which modifies document state. The description states it 'Create guides on a page', indicating a write operation that adds/modifies page layout elements.
Documented attack patterns abuse exactly the kind of access create_page_guides 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 create_page_guides:
{
"version": "1",
"default": "deny",
"tools": {
"create_page_guides": {
"limits": [
{
"counter": "create_page_guides_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_page_guides 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.
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Create guides on a page. It is categorised as a Write tool in the InDesign MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the InDesign MCP Server MCP server in PolicyLayer and add a rule for create_page_guides: 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.
create_page_guides is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_page_guides 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 create_page_guides. 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.
create_page_guides 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.