vfx_mirror_y · vidMagik- MCP: Risk & Policy

WHAT IT DOES

What vfx_mirror_y does on vidMagik-mcp

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

WHY IT NEEDS A POLICY

Why vfx_mirror_y needs a policy

This tool transforms video by flipping frames vertically. It creates modified video data (Write category) rather than merely reading or executing arbitrary operations. The modification is reversible (can mirror again to restore original), and the operation itself is deterministic based on input video.

From the tool's definition Tool named 'vfx_mirror_y' that performs video transformation; mirrors video along Y-axis. Server description states tools provide 'video transformations' and this is categorized as 'vfx_*' (video effects). The operation modifies video frame data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vfx_mirror_y Rate-limited

vfx_mirror_y 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": {
    "vfx_mirror_y": {
      "limits": [
        {
          "counter": "vfx_mirror_y_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 vidMagik-mcp, so you can run agents against it safely.

FAQ

Questions about vfx_mirror_y

What does the vfx_mirror_y tool do? +

Mirror Y. It is categorised as a Write tool in the vidMagik-mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on vfx_mirror_y? +

Register the vidMagik- MCP server in PolicyLayer and add a rule for vfx_mirror_y: 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 vidMagik-mcp. Nothing to install.

What risk level is vfx_mirror_y? +

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

Can I rate-limit vfx_mirror_y? +

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

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

vfx_mirror_y is provided by the vidMagik- MCP server (vizionik25/vidmagik-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.