romm_add_to_collection · Mcp Romm MCP: Risk & Policy

WHAT IT DOES

What romm_add_to_collection does on Mcp Romm

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

WHY IT NEEDS A POLICY

Why romm_add_to_collection needs a policy

This tool creates or modifies data by appending ROMs to a collection. It is reversible (items can be removed later via romm_delete_collection or similar operations), making it a Write operation rather than Destructive.

From the tool's definition Tool description states: 'Add one or more ROMs to a collection (without replacing the existing list).' The verb 'Add' and the explicit mention of adding without replacing indicates a create/modify operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

romm_add_to_collection Rate-limited

romm_add_to_collection 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": {
    "romm_add_to_collection": {
      "limits": [
        {
          "counter": "romm_add_to_collection_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Romm, so you can run agents against it safely.

FAQ

Questions about romm_add_to_collection

What does the romm_add_to_collection tool do? +

Add one or more ROMs to a collection (without replacing the existing list). It is categorised as a Write tool in the Mcp Romm MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on romm_add_to_collection? +

Register the Mcp Romm MCP server in PolicyLayer and add a rule for romm_add_to_collection: 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 Mcp Romm. Nothing to install.

What risk level is romm_add_to_collection? +

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

Can I rate-limit romm_add_to_collection? +

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

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

romm_add_to_collection is provided by the Mcp Romm MCP server (lodordev/mcp-romm). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.