add_visual · PBIFORGE MCP: Risk & Policy

WHAT IT DOES

What add_visual does on PBIFORGE

AI agents use add_visual 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 add_visual needs a policy

Adding a visual to a report is a reversible modification of data/content (the visual can be removed, edited, or the report regenerated). It does not execute arbitrary code, delete data, or involve financial transactions. The impact is scoped to the specific report session, making it medium severity—misuse could create misleading visualizations but the changes are undoable.

From the tool's definition Tool name 'add_visual' and description 'Add a visual to an existing report session' indicates creation/modification of report elements. This is a write operation that modifies an existing Power BI report structure by adding a new visual component.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_visual Rate-limited

add_visual 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": {
    "add_visual": {
      "limits": [
        {
          "counter": "add_visual_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 add_visual

What does the add_visual tool do? +

Add a visual to an existing report session. 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 add_visual? +

Register the PBIFORGE MCP server in PolicyLayer and add a rule for add_visual: 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 add_visual? +

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

Can I rate-limit add_visual? +

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

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

add_visual 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.