vfx_blink · vidMagik- MCP: Risk & Policy

WHAT IT DOES

What vfx_blink does on vidMagik-mcp

AI agents use vfx_blink 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_blink needs a policy

This tool modifies video frames by applying a blinking effect—a visual transformation that alters the clip's appearance. It creates new output data (modified video) without permanently destroying the original, and the effect is reversible (the user can choose not to apply it or remove it in post). This is characteristic of Write operations.

From the tool's definition Tool name 'vfx_blink' and description 'Make clip blink' indicate a video effect modification that creates a blinking animation on the input clip. This transforms video content by adding a visual effect.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vfx_blink Rate-limited

vfx_blink 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_blink": {
      "limits": [
        {
          "counter": "vfx_blink_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_blink

What does the vfx_blink tool do? +

Make clip blink. 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_blink? +

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

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

Can I rate-limit vfx_blink? +

Yes. Add a rate_limit block to the vfx_blink 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_blink completely? +

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

vfx_blink 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.