write_videofile · vidMagik- MCP: Risk & Policy

WHAT IT DOES

What write_videofile does on vidMagik-mcp

AI agents use write_videofile 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 write_videofile needs a policy

This tool creates or modifies video files on the filesystem. While not destructive by itself (it does not delete or overwrite existing files by default), it is a Write operation that can consume significant disk space and create new artifacts.

From the tool's definition Tool name is 'write_videofile' and description states 'Write a video clip to a file.' The verb 'write' and the explicit file output operation indicate data creation/modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

write_videofile Rate-limited

write_videofile 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": {
    "write_videofile": {
      "limits": [
        {
          "counter": "write_videofile_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 write_videofile

What does the write_videofile tool do? +

Write a video clip to a file. 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 write_videofile? +

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

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

Can I rate-limit write_videofile? +

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

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

write_videofile 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.