create-lipsync · Sync MCP Server MCP: Risk & Policy

WHAT IT DOES

What create-lipsync does on Sync MCP Server

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

WHY IT NEEDS A POLICY

Why create-lipsync needs a policy

This tool creates a new lipsync video asset by combining audio with video or image input. It generates new content (reversible in the sense that the source assets are not destroyed), making it a Write operation. Severity is medium because misuse could generate unauthorized or unwanted video content consuming API credits, but it doesn't delete data or move money.

From the tool's definition Create a lipsync video from audio + EITHER a video or a still image

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-lipsync Rate-limited

create-lipsync 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": {
    "create-lipsync": {
      "limits": [
        {
          "counter": "create-lipsync_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 Sync MCP Server, so you can run agents against it safely.

FAQ

Questions about create-lipsync

What does the create-lipsync tool do? +

Create a lipsync video from audio + EITHER a video or a still image (an image drives sync-3 image-to-video). It is categorised as a Write tool in the Sync MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-lipsync? +

Register the Sync MCP Server MCP server in PolicyLayer and add a rule for create-lipsync: 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 Sync MCP Server. Nothing to install.

What risk level is create-lipsync? +

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

Can I rate-limit create-lipsync? +

Yes. Add a rate_limit block to the create-lipsync 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 create-lipsync completely? +

Set action: deny in the PolicyLayer policy for create-lipsync. 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 create-lipsync? +

create-lipsync is provided by the Sync MCP Server MCP server (synchronicity-labs/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.