reopen_issue · Kepler MCP GitLab Server MCP: Risk & Policy

WHAT IT DOES

What reopen_issue does on Kepler MCP GitLab Server

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

WHY IT NEEDS A POLICY

Why reopen_issue needs a policy

Reopening an issue changes its status from closed to open—a reversible state modification. This is a Write operation, not Read (no side effects beyond state change), Execute (not running arbitrary code), or Destructive (can be undone). Severity is medium because misuse could create noise and operational overhead, but the blast radius is limited to issue lifecycle management within a single project.

From the tool's definition Tool name is 'reopen_issue'; context shows this is a GitLab integration server managing issues. Reopening an issue modifies issue state reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reopen_issue Rate-limited

reopen_issue 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": {
    "reopen_issue": {
      "limits": [
        {
          "counter": "reopen_issue_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 Kepler MCP GitLab Server, so you can run agents against it safely.

FAQ

Questions about reopen_issue

What does the reopen_issue tool do? +

reopen_issue. It is categorised as a Write tool in the Kepler MCP GitLab Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reopen_issue? +

Register the Kepler MCP GitLab Server MCP server in PolicyLayer and add a rule for reopen_issue: 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 Kepler MCP GitLab Server. Nothing to install.

What risk level is reopen_issue? +

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

Can I rate-limit reopen_issue? +

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

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

reopen_issue is provided by the Kepler MCP GitLab Server MCP server (ryan-rbw/kepler-mcp-gitlab-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.