update_journal_note · Redmine MCP: Risk & Policy

WHAT IT DOES

What update_journal_note does on Redmine

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

WHY IT NEEDS A POLICY

Why update_journal_note needs a policy

This tool modifies an existing journal entry's note text, which is a reversible write operation. It does not delete data (would be Destructive), does not execute code or external actions (would be Execute), and is not financial in nature (would be Financial).

From the tool's definition Tool name 'update_journal_note' and description 'Edit an existing journal entry's note' indicate modification of existing data. The verb 'Edit' and 'update' confirm reversible alteration rather than deletion.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_journal_note Rate-limited

update_journal_note 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": {
    "update_journal_note": {
      "limits": [
        {
          "counter": "update_journal_note_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 Redmine, so you can run agents against it safely.

FAQ

Questions about update_journal_note

What does the update_journal_note tool do? +

Edit an existing journal entry's note. Only the note text and. It is categorised as a Write tool in the Redmine MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_journal_note? +

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

What risk level is update_journal_note? +

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

Can I rate-limit update_journal_note? +

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

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

update_journal_note is provided by the Redmine MCP server (KalvadTech/redmine-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.