set_iso · So Dsc MCP: Risk & Policy

WHAT IT DOES

What set_iso does on So Dsc

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

WHY IT NEEDS A POLICY

Why set_iso needs a policy

This tool modifies camera settings (ISO value), which is a write-class operation that changes device state reversibly. It does not execute arbitrary code, delete data, or perform financial operations. The severity is medium because incorrect ISO values could result in poor image quality or unexpected camera behavior, but the effect is easily corrected by setting a different value.

From the tool's definition Tool name 'set_iso' combined with description 'Set ISO' indicates a configuration modification to camera settings. This is a reversible state change operation on the camera's ISO sensitivity parameter.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_iso Rate-limited

set_iso 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": {
    "set_iso": {
      "limits": [
        {
          "counter": "set_iso_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 So Dsc, so you can run agents against it safely.

FAQ

Questions about set_iso

What does the set_iso tool do? +

Set ISO. Pass a string the camera advertises — typically "AUTO",. It is categorised as a Write tool in the So Dsc 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_iso? +

Register the So Dsc MCP server in PolicyLayer and add a rule for set_iso: 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 So Dsc. Nothing to install.

What risk level is set_iso? +

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

Can I rate-limit set_iso? +

Yes. Add a rate_limit block to the set_iso 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_iso completely? +

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

set_iso is provided by the So Dsc MCP server (nananek/so-dsc). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.