# delete_custom_property

Delete a custom document property by name.

Agent View of the PolicyLayer registry record for `delete_custom_property`. HTML page: https://policylayer.com/tools/securityronin-docx-mcp/delete-custom-property

## Facts

- Tool: `delete_custom_property`
- Server: Docx (`securityronin/docx-mcp`) — https://policylayer.com/tools/securityronin-docx-mcp.md
- Homepage: https://github.com/SecurityRonin/docx-mcp
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "delete_custom_property",
    "arguments": {}
  }
}
```

## Why delete_custom_property is rated Critical

The tool performs an irreversible deletion operation on document properties. Once deleted, custom properties cannot be recovered through standard undo mechanisms within the document context. Although the blast radius is limited to document metadata rather than main content, deletion operations are categorized as Destructive per the classification rules.

From the tool's own definition: "Tool name contains 'delete' and description states 'Delete a custom document property by name' — this irreversibly removes metadata from a Word document."

## Use case

AI agents call delete_custom_property to permanently remove resources in Docx, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

Verdict: **Hidden**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Docx:

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_custom_property"
  ]
}
```

## Other tools on Docx (218)

- `delete_column_from_table` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-column-from-table.md
- `delete_comment` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-comment.md
- `delete_content_control` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-content-control.md
- `delete_endnote` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-endnote.md
- `delete_field` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-field.md
- `delete_footer` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-footer.md
- `delete_footnote` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-footnote.md
- `delete_header` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-header.md
- `delete_image` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-image.md
- `delete_paragraph` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-paragraph.md
- `delete_section_break` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-section-break.md
- `delete_style` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-style.md
- `delete_table` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-table.md
- `delete_table_row` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-table-row.md
- `delete_text` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/delete-text.md
- `flatten_document` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/flatten-document.md
- `remove_bookmark` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/remove-bookmark.md
- `remove_watermark` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/remove-watermark.md
- `scrub_pii` — Destructive — https://policylayer.com/tools/securityronin-docx-mcp/scrub-pii.md
- `compare_documents` — Execute — https://policylayer.com/tools/securityronin-docx-mcp/compare-documents.md
- `xpath_query` — Execute — https://policylayer.com/tools/securityronin-docx-mcp/xpath-query.md
- `audit_document` — Read — https://policylayer.com/tools/securityronin-docx-mcp/audit-document.md
- `check_accessibility` — Read — https://policylayer.com/tools/securityronin-docx-mcp/check-accessibility.md
- `compare_contracts` — Read — https://policylayer.com/tools/securityronin-docx-mcp/compare-contracts.md
- `diff_to_text` — Read — https://policylayer.com/tools/securityronin-docx-mcp/diff-to-text.md
- `export_markdown` — Read — https://policylayer.com/tools/securityronin-docx-mcp/export-markdown.md
- `generate_change_summary` — Read — https://policylayer.com/tools/securityronin-docx-mcp/generate-change-summary.md
- `get_alt_text` — Read — https://policylayer.com/tools/securityronin-docx-mcp/get-alt-text.md
- `get_body_text` — Read — https://policylayer.com/tools/securityronin-docx-mcp/get-body-text.md
- `get_bookmarked_text` — Read — https://policylayer.com/tools/securityronin-docx-mcp/get-bookmarked-text.md
- …and 188 more: https://policylayer.com/tools/securityronin-docx-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=securityronin-docx-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/securityronin-docx-mcp