misp_add_sighting · Misp MCP: Risk & Policy

WHAT IT DOES

What misp_add_sighting does on Misp

AI agents use misp_add_sighting 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_sighting needs a policy

misp_add_sighting creates new sighting records or modifies existing threat intelligence metadata. This is a reversible write operation (sightings can be corrected or deleted) with no financial impact or code execution.

From the tool's definition Tool enables reporting sightings which modifies MISP data by confirming observations, marking false positives, or setting expirations—creating or updating threat intelligence records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

misp_add_sighting Rate-limited

misp_add_sighting 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_sighting": {
      "limits": [
        {
          "counter": "misp_add_sighting_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_sighting

What does the misp_add_sighting tool do? +

Report a sighting of an IOC (confirms it was observed in the wild, marks as false positive, or sets expiration). 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_sighting? +

Register the Misp MCP server in PolicyLayer and add a rule for misp_add_sighting: 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_sighting? +

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

Can I rate-limit misp_add_sighting? +

Yes. Add a rate_limit block to the misp_add_sighting 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_sighting completely? +

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

misp_add_sighting 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.