vfx_scroll · vidMagik- MCP: Risk & Policy

WHAT IT DOES

What vfx_scroll does on vidMagik-mcp

AI agents invoke vfx_scroll to trigger actions in vidMagik-mcp. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why vfx_scroll needs a policy

This tool applies a visual effect (scrolling) to a video clip, which constitutes executing a video transformation operation. It modifies the visual presentation of media content by applying a scroll effect. The description is minimal and uninformative, reducing confidence. It is not purely read-only, nor destructive/financial, but triggers an external video processing operation whose output depends on arguments.

From the tool's definition Tool name 'vfx_scroll' and description 'Scroll clip.' on a video editing MCP server with 70+ tools for video transformations

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vfx_scroll Rate-limited

vfx_scroll stays usable, but rate-capped — a runaway agent can't fire it dozens of times 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_scroll": {
      "limits": [
        {
          "counter": "vfx_scroll_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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_scroll

What does the vfx_scroll tool do? +

Scroll clip. It is categorised as a Execute tool in the vidMagik-mcp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on vfx_scroll? +

Register the vidMagik- MCP server in PolicyLayer and add a rule for vfx_scroll: 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_scroll? +

vfx_scroll is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit vfx_scroll? +

Yes. Add a rate_limit block to the vfx_scroll 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_scroll completely? +

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

vfx_scroll 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.