add_filter · PBIFORGE MCP: Risk & Policy

WHAT IT DOES

What add_filter does on PBIFORGE

AI agents use add_filter 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_filter needs a policy

Adding filters/slicers modifies the report structure by introducing new interactive elements, which is a reversible write operation. It does not execute external commands, delete data, or move financial resources. The severity is medium because misuse could alter report behavior unexpectedly, potentially affecting data interpretation, but the changes are reversible and non-destructive.

From the tool's definition Tool description states 'Add a slicer or filter to the report' — this creates or modifies report components reversibly without deleting data or executing arbitrary code.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_filter Rate-limited

add_filter 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_filter": {
      "limits": [
        {
          "counter": "add_filter_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_filter

What does the add_filter tool do? +

Add a slicer or filter to the report. 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_filter? +

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

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

Can I rate-limit add_filter? +

Yes. Add a rate_limit block to the add_filter 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_filter completely? +

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

add_filter 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.