misp_attach_galaxy_cluster · Misp MCP: Risk & Policy

WHAT IT DOES

What misp_attach_galaxy_cluster does on Misp

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

WHY IT NEEDS A POLICY

Why misp_attach_galaxy_cluster needs a policy

The tool adds metadata (galaxy cluster associations like MITRE ATT&CK techniques or threat actors) to existing MISP objects. This is a write operation: it creates new associations and modifies the state of events/attributes. It is reversible (clusters can be detached), distinguishing it from Destructive. It does not execute code, move money, or permanently delete data.

From the tool's definition Attach a galaxy cluster...to an event or attribute—this modifies event or attribute metadata by adding a relationship/association, which is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

misp_attach_galaxy_cluster Rate-limited

misp_attach_galaxy_cluster 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": {
    "misp_attach_galaxy_cluster": {
      "limits": [
        {
          "counter": "misp_attach_galaxy_cluster_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 Misp, so you can run agents against it safely.

FAQ

Questions about misp_attach_galaxy_cluster

What does the misp_attach_galaxy_cluster tool do? +

Attach a galaxy cluster (MITRE ATT&CK technique, threat actor, etc.) to an event or attribute. It is categorised as a Write tool in the Misp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on misp_attach_galaxy_cluster? +

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

What risk level is misp_attach_galaxy_cluster? +

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

Can I rate-limit misp_attach_galaxy_cluster? +

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

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

misp_attach_galaxy_cluster is provided by the Misp MCP server (solomonneas/misp-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.