# update_page

Update an existing page.

Agent View of the PolicyLayer registry record for `update_page`. HTML page: https://policylayer.com/tools/derron-knox-bookstack-mcp-server/update-page

## Facts

- Tool: `update_page`
- Server: BookStack MCP Server (`derron-knox/bookstack-mcp-server`) — https://policylayer.com/tools/derron-knox-bookstack-mcp-server.md
- Homepage: https://github.com/Derron-Knox/bookstack-mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why update_page is rated Medium

The tool modifies existing content (pages) within a knowledge base but does not delete or irreversibly destroy data. Updates are typically reversible through version history or subsequent edits. The severity is medium rather than low because unauthorized updates to knowledge base content could mislead users or corrupt documentation, though the impact is constrained to a single page and reversible.

From the tool's own definition: "Tool name 'update_page' and description 'Update an existing page' indicate modification of existing data in a reversible manner."

## Use case

AI agents use update_page to create or update resources in BookStack MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your BookStack MCP Server environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches BookStack MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_page": {
      "limits": [
        {
          "counter": "update_page_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on BookStack MCP Server (23)

- `delete_book` — Destructive — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/delete-book.md
- `delete_chapter` — Destructive — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/delete-chapter.md
- `delete_page` — Destructive — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/delete-page.md
- `delete_shelf` — Destructive — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/delete-shelf.md
- `export_chapter_html` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/export-chapter-html.md
- `export_chapter_markdown` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/export-chapter-markdown.md
- `export_chapter_pdf` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/export-chapter-pdf.md
- `export_chapter_plaintext` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/export-chapter-plaintext.md
- `get_page_content` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/get-page-content.md
- `list_books` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/list-books.md
- `list_chapters` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/list-chapters.md
- `list_shelves` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/list-shelves.md
- `read_book` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/read-book.md
- `read_chapter` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/read-chapter.md
- `read_shelf` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/read-shelf.md
- `search_items` — Read — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/search-items.md
- `create_book` — Write — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/create-book.md
- `create_chapter` — Write — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/create-chapter.md
- `create_page` — Write — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/create-page.md
- `create_shelf` — Write — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/create-shelf.md
- `update_book` — Write — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/update-book.md
- `update_chapter` — Write — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/update-chapter.md
- `update_shelf` — Write — https://policylayer.com/tools/derron-knox-bookstack-mcp-server/update-shelf.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`

---

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