add_issue_note · Redmine MCP: Risk & Policy | PolicyLayer

WHAT IT DOES

What add_issue_note does on Redmine

AI agents use add_issue_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 add_issue_note needs a policy

Adding a comment/note to an issue creates new data that modifies the issue but does not delete or irreversibly destroy information. The action is reversible through standard issue management operations. While it affects an existing issue, the modification is additive and non-destructive.

From the tool's definition Tool description states "Append a note (comment) to an issue." This is a reversible modification operation. Comments can typically be edited or deleted in Redmine, making it a Write operation rather than Destructive.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_issue_note Rate-limited

add_issue_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": {
    "add_issue_note": {
      "limits": [
        {
          "counter": "add_issue_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 add_issue_note

What does the add_issue_note tool do? +

Append a note (comment) to an issue. 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 add_issue_note? +

Register the Redmine MCP server in PolicyLayer and add a rule for add_issue_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 add_issue_note? +

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

Can I rate-limit add_issue_note? +

Yes. Add a rate_limit block to the add_issue_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 add_issue_note completely? +

Set action: deny in the PolicyLayer policy for add_issue_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 add_issue_note? +

add_issue_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.