create_page · Hubnote MCP: Risk & Policy

WHAT IT DOES

What create_page does on Hubnote Mcp

AI agents use create_page to create or update resources in Hubnote Mcp — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hubnote Mcp environment.

WHY IT NEEDS A POLICY

Why create_page needs a policy

The tool creates new pages within a workspace, which is a Write operation (reversible data creation). It does not execute arbitrary code, delete data, or move money. Severity is medium because creating pages could clutter a workspace or be used to inject unwanted content, but the action is reversible via deletion or archival (as evidenced by the sibling 'archive_page' and 'delete_data_row' tools on this server).

From the tool's definition Tool name is 'create_page' and description states 'Create a new BlockNote page in a workspace' with optional content seeding. This is a create operation that reversibly adds new data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_page Rate-limited

create_page 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": {
    "create_page": {
      "limits": [
        {
          "counter": "create_page_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 Hubnote Mcp, so you can run agents against it safely.

FAQ

Questions about create_page

What does the create_page tool do? +

Create a new BlockNote page in a workspace. Optional parent_id makes it a sub-page. Optional content_markdown seeds the body (converted to BlockNote blocks). It is categorised as a Write tool in the Hubnote Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_page? +

Register the Hubnote MCP server in PolicyLayer and add a rule for create_page: 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 Hubnote Mcp. Nothing to install.

What risk level is create_page? +

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

Can I rate-limit create_page? +

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

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

create_page is provided by the Hubnote MCP server (wlzerd/hubnote-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.