daily_journal · Notion MCP: Risk & Policy

WHAT IT DOES

What daily_journal does on Notion

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

WHY IT NEEDS A POLICY

Why daily_journal needs a policy

This tool creates new content (a timestamped journal entry) without deleting or modifying existing data irreversibly. It is a Write operation with low severity because journaling is a low-risk activity with minimal blast radius if misused by an AI agent—the worst outcome is unwanted journal entries that can be manually deleted.

From the tool's definition Tool name 'daily_journal' and description 'Add a timestamped entry to today's journal' explicitly indicates creation of new data (a journal entry) to a specific location (today's journal).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

daily_journal Rate-limited

daily_journal 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": {
    "daily_journal": {
      "limits": [
        {
          "counter": "daily_journal_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 Notion, so you can run agents against it safely.

FAQ

Questions about daily_journal

What does the daily_journal tool do? +

Add a timestamped entry to today's journal. It is categorised as a Write tool in the Notion MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on daily_journal? +

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

What risk level is daily_journal? +

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

Can I rate-limit daily_journal? +

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

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

daily_journal is provided by the Notion MCP server (kuldeepjha5176/notion-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.