pbir_apply_theme · Power BI Report MCP Server MCP

WHAT IT DOES

What pbir_apply_theme does on Power BI Report MCP Server

AI agents use pbir_apply_theme to create or update resources in Power BI Report MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Power BI Report MCP Server environment.

WHY IT NEEDS A POLICY

Why pbir_apply_theme needs a policy

This tool creates or modifies report data (visual formatting/theming) reversibly. It affects the presentation layer of Power BI reports but does not delete data (Destructive), execute arbitrary code (Execute), create financial obligations (Financial), or merely retrieve data (Read).

From the tool's definition Tool name 'pbir_apply_theme' and description 'Apply a named theme preset to all visuals on a page' indicates the tool modifies the formatting/styling of report visuals by applying a theme, which is a reversible change to report structure/appearance.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pbir_apply_theme Rate-limited

pbir_apply_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": {
    "pbir_apply_theme": {
      "limits": [
        {
          "counter": "pbir_apply_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 Power BI Report MCP Server, so you can run agents against it safely.

FAQ

Questions about pbir_apply_theme

What does the pbir_apply_theme tool do? +

Apply a named theme preset to all visuals on a page. Themes: ${Object.keys(THEME_PRESETS).join(. It is categorised as a Write tool in the Power BI Report 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 pbir_apply_theme? +

Register the Power BI Report MCP Server MCP server in PolicyLayer and add a rule for pbir_apply_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 Power BI Report MCP Server. Nothing to install.

What risk level is pbir_apply_theme? +

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

Can I rate-limit pbir_apply_theme? +

Yes. Add a rate_limit block to the pbir_apply_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 pbir_apply_theme completely? +

Set action: deny in the PolicyLayer policy for pbir_apply_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 pbir_apply_theme? +

pbir_apply_theme is provided by the Power BI Report MCP Server MCP server (jonathan-pap/powerbi-report-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.