misp_add_object · Misp MCP: Risk & Policy

WHAT IT DOES

What misp_add_object does on Misp

AI agents use misp_add_object 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_add_object needs a policy

This tool creates or modifies data within MISP events by adding new objects. It is a Write-class operation because it creates/adds data without irreversibly destroying it.

From the tool's definition The tool description states 'Add a MISP object (structured group of attributes) to an event', using the word 'Add' which indicates creation/modification of data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

misp_add_object Rate-limited

misp_add_object 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_add_object": {
      "limits": [
        {
          "counter": "misp_add_object_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_add_object

What does the misp_add_object tool do? +

Add a MISP object (structured group of attributes) to an event. 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_add_object? +

Register the Misp MCP server in PolicyLayer and add a rule for misp_add_object: 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_add_object? +

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

Can I rate-limit misp_add_object? +

Yes. Add a rate_limit block to the misp_add_object 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_add_object completely? +

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

misp_add_object 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.