merge_videos · Loom Advisor MCP: Risk & Policy

WHAT IT DOES

What merge_videos does on Loom Advisor

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

WHY IT NEEDS A POLICY

Why merge_videos needs a policy

The merge_videos tool creates a new composite video asset by combining existing videos. This is a reversible modification operation (the merged video can be deleted, and original videos remain unchanged), fitting the Write category.

From the tool's definition Tool description states "Combine multiple videos into one merged video" and "Provide at least 2 video IDs in the desired merge order. Optionally specify a title for the merged result." This creates new data (a merged video) in the Loom system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

merge_videos Rate-limited

merge_videos 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": {
    "merge_videos": {
      "limits": [
        {
          "counter": "merge_videos_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 Loom Advisor, so you can run agents against it safely.

FAQ

Questions about merge_videos

What does the merge_videos tool do? +

Combine multiple videos into one merged video. Provide at least 2 video IDs in the desired merge order. Optionally specify a title for the merged result. It is categorised as a Write tool in the Loom Advisor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on merge_videos? +

Register the Loom Advisor MCP server in PolicyLayer and add a rule for merge_videos: 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 Loom Advisor. Nothing to install.

What risk level is merge_videos? +

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

Can I rate-limit merge_videos? +

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

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

merge_videos is provided by the Loom Advisor MCP server (m2ai-mcp-servers/mcp-loom-video). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.