add_threat_indicator · Rapid7 MCP: Risk & Policy

WHAT IT DOES

What add_threat_indicator does on Rapid7

AI agents use add_threat_indicator to create or update resources in Rapid7 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Rapid7 environment.

WHY IT NEEDS A POLICY

Why add_threat_indicator needs a policy

This tool creates or adds data (threat indicators) to a security system's threat library. While reversible (indicators can be removed), it modifies the security posture by adding entries that will influence threat detection and response.

From the tool's definition Tool description states 'Add a new IOC (IP, domain, hash, etc.) to the InsightIDR custom threat library' - this creates new data in the threat intelligence system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_threat_indicator Rate-limited

add_threat_indicator 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_threat_indicator": {
      "limits": [
        {
          "counter": "add_threat_indicator_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 Rapid7, so you can run agents against it safely.

FAQ

Questions about add_threat_indicator

What does the add_threat_indicator tool do? +

Add a new IOC (IP, domain, hash, etc.) to the InsightIDR custom threat library. It is categorised as a Write tool in the Rapid7 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_threat_indicator? +

Register the Rapid7 MCP server in PolicyLayer and add a rule for add_threat_indicator: 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 Rapid7. Nothing to install.

What risk level is add_threat_indicator? +

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

Can I rate-limit add_threat_indicator? +

Yes. Add a rate_limit block to the add_threat_indicator 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_threat_indicator completely? +

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

add_threat_indicator is provided by the Rapid7 MCP server (solomonneas/rapid7-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.