Medium Risk

set_spread_properties

Set properties for a spread

How to control set_spread_properties ↓

What set_spread_properties does on InDesign MCP Server

AI agents use set_spread_properties 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.

Medium Risk

Why set_spread_properties needs a policy

This tool modifies spread properties within an InDesign document, which is a reversible write operation. It does not delete data (Destructive), execute arbitrary code (Execute), involve financial transactions (Financial), or merely read data (Read).

From the tool's definition Tool name 'set_spread_properties' and description 'Set properties for a spread' indicate modification of design document properties.

Documented attack patterns abuse exactly the kind of access set_spread_properties gives an agent:

How to control set_spread_properties

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 set_spread_properties:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_spread_properties": {
      "limits": [
        {
          "counter": "set_spread_properties_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

set_spread_properties 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.

  1. Create a free account and register InDesign MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

Free to start. No card required.

Related tools and policies

Go deeper

Questions about set_spread_properties

What does the set_spread_properties tool do? +

Set properties for a spread. 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.

How do I enforce a policy on set_spread_properties? +

Register the InDesign MCP Server MCP server in PolicyLayer and add a rule for set_spread_properties: 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.

What risk level is set_spread_properties? +

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

Can I rate-limit set_spread_properties? +

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

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

set_spread_properties 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.

Enforce policy on every InDesign MCP Server tool call.

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.

Free to start. No card required.

135 InDesign MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

// GET IN TOUCH

Have a question or want to learn more? Send us a message.

Message sent.

We'll get back to you soon.