scrub_pii

THE RISK

Critical Risk

Why scrub_pii needs a policy

'Scrubbing' PII typically means permanently removing or overwriting sensitive personal data from documents, which is an irreversible destructive operation. Given the server context (Word document manipulation at OOXML level), this likely modifies document content by permanently deleting PII fields. Confidence is reduced due to the empty description, but the name strongly implies destructive data removal.

From the tool's definition Tool name 'scrub_pii' implies irreversible removal of personally identifiable information from documents. The description is empty, providing no additional context.

Documented attack patterns abuse exactly the kind of access scrub_pii gives an agent:

POLICY

How to control scrub_pii

PolicyLayer is an MCP gateway — it sits between your AI agents and Docx, and nothing reaches the server without passing your rules. This is the rule we recommend for scrub_pii:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "scrub_pii"
  ]
}

scrub_pii disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Docx — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Docx tools

Destructive delete_column_from_table Delete a column (0-based) from every row of a table. Destructive delete_comment Delete a comment and remove its range markers from the document. Destructive delete_content_control Remove an SDT content control wrapper, keeping its content in place. Destructive delete_custom_property Delete a custom document property by name. Destructive delete_endnote Delete an endnote and its in-body reference. Destructive delete_field Remove a complete complex field (begin through end runs) from the document. Destructive delete_footer Delete a footer by location: default, first, or even. Destructive delete_footnote Delete a footnote and its in-body reference.

All 219 Docx tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Docx → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about scrub_pii

What does the scrub_pii tool do? +

scrub_pii. It is categorised as a Destructive tool in the Docx MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on scrub_pii? +

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

What risk level is scrub_pii? +

scrub_pii is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit scrub_pii? +

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

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

scrub_pii is provided by the Docx MCP server (securityronin/docx-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Docx tool call.

Start from Docx, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →