image-export · MCP Index Notes MCP: Risk & Policy

WHAT IT DOES

What image-export does on MCP Index Notes

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

WHY IT NEEDS A POLICY

Why image-export needs a policy

The tool's primary function is to export and write image data to files on the file system. While not destructive (existing files could be preserved or this may fail if files exist), it clearly modifies the file system state by creating new files. This makes it a Write operation rather than Read.

From the tool's definition Tool performs export operation that creates/writes image files to disk ("Export images... to files. Returns file paths."). This involves file system modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

image-export Rate-limited

image-export 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": {
    "image-export": {
      "limits": [
        {
          "counter": "image-export_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 MCP Index Notes, so you can run agents against it safely.

FAQ

Questions about image-export

What does the image-export tool do? +

Export images (by id or key) to files. Returns file paths. It is categorised as a Write tool in the MCP Index Notes MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on image-export? +

Register the MCP Index Notes MCP server in PolicyLayer and add a rule for image-export: 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 MCP Index Notes. Nothing to install.

What risk level is image-export? +

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

Can I rate-limit image-export? +

Yes. Add a rate_limit block to the image-export 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 image-export completely? +

Set action: deny in the PolicyLayer policy for image-export. 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 image-export? +

image-export is provided by the MCP Index Notes MCP server (vjsr007/mcp-index-notes). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.