misp_create_event · Misp MCP: Risk & Policy

WHAT IT DOES

What misp_create_event does on Misp

AI agents use misp_create_event 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_create_event needs a policy

This tool creates and adds data to the MISP threat intelligence platform, which is a write operation. It is reversible (events can be deleted), so it does not qualify as Destructive.

From the tool's definition Tool name 'misp_create_event' and description 'Create a new MISP event' indicate creation of a new data record in MISP.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

misp_create_event Rate-limited

misp_create_event 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_create_event": {
      "limits": [
        {
          "counter": "misp_create_event_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_create_event

What does the misp_create_event tool do? +

Create a new MISP event for documenting incidents or threat intelligence. Does not publish - use misp_publish_event separately. 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_create_event? +

Register the Misp MCP server in PolicyLayer and add a rule for misp_create_event: 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_create_event? +

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

Can I rate-limit misp_create_event? +

Yes. Add a rate_limit block to the misp_create_event 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_create_event completely? +

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

misp_create_event 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.