apply_image_theme · PBIFORGE MCP: Risk & Policy

WHAT IT DOES

What apply_image_theme does on PBIFORGE

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

WHY IT NEEDS A POLICY

Why apply_image_theme needs a policy

This tool creates or modifies report styling metadata (color theme) based on image analysis. While it changes the report's appearance, the modification is reversible—themes can be changed or reverted. It does not execute code, delete data, or trigger external operations with unpredictable side effects.

From the tool's definition Tool applies color palette extraction to report theme, which modifies visual styling properties of the dashboard. The verb 'apply' combined with 'report theme' indicates a reversible modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_image_theme Rate-limited

apply_image_theme 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": {
    "apply_image_theme": {
      "limits": [
        {
          "counter": "apply_image_theme_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 PBIFORGE, so you can run agents against it safely.

FAQ

Questions about apply_image_theme

What does the apply_image_theme tool do? +

Extract color palette from a dashboard image and apply it as the report theme. It is categorised as a Write tool in the PBIFORGE MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on apply_image_theme? +

Register the PBIFORGE MCP server in PolicyLayer and add a rule for apply_image_theme: 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 PBIFORGE. Nothing to install.

What risk level is apply_image_theme? +

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

Can I rate-limit apply_image_theme? +

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

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

apply_image_theme is provided by the PBIFORGE MCP server (twilize5/reportforge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.