pbir_change_visual_type · Power BI Report MCP Server MCP

WHAT IT DOES

What pbir_change_visual_type does on Power BI Report MCP Server

AI agents use pbir_change_visual_type 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_change_visual_type needs a policy

The tool creates or modifies report content (visual type transformation) without deleting data or executing arbitrary code. While it alters report structure, the change is reversible—users can change a visual back to its original type. This qualifies as Write category (modify/update).

From the tool's definition Tool modifies existing visual properties by changing visual type while preserving data bindings (e.g., barChart to columnChart). This is a reversible modification of report structure without deletion.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pbir_change_visual_type Rate-limited

pbir_change_visual_type 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_change_visual_type": {
      "limits": [
        {
          "counter": "pbir_change_visual_type_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_change_visual_type

What does the pbir_change_visual_type tool do? +

Change the visual type of an existing visual (e.g. barChart to columnChart) while keeping data bindings. 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_change_visual_type? +

Register the Power BI Report MCP Server MCP server in PolicyLayer and add a rule for pbir_change_visual_type: 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_change_visual_type? +

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

Can I rate-limit pbir_change_visual_type? +

Yes. Add a rate_limit block to the pbir_change_visual_type 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_change_visual_type completely? +

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

pbir_change_visual_type 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.