batch_compress_images · FFmpeg MCP Tool MCP: Risk & Policy

WHAT IT DOES

What batch_compress_images does on FFmpeg MCP Tool

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

WHY IT NEEDS A POLICY

Why batch_compress_images needs a policy

This tool writes/modifies data by compressing images in batch. While it doesn't delete originals (reversible if backups exist), it overwrites or creates new compressed files, fitting the Write category. Severity is medium because bulk image modification could affect many files, but the operation is generally reversible and non-destructive compared to deletion.

From the tool's definition Tool modifies image files through compression: 'batch_compress_images' performs '批量压缩指定文件夹中的所有图片' (batch compress all images in specified folder).

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

batch_compress_images Rate-limited

batch_compress_images 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": {
    "batch_compress_images": {
      "limits": [
        {
          "counter": "batch_compress_images_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 FFmpeg MCP Tool, so you can run agents against it safely.

FAQ

Questions about batch_compress_images

What does the batch_compress_images tool do? +

批量压缩指定文件夹中的所有图片. It is categorised as a Write tool in the FFmpeg MCP Tool MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on batch_compress_images? +

Register the FFmpeg MCP Tool MCP server in PolicyLayer and add a rule for batch_compress_images: 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 FFmpeg MCP Tool. Nothing to install.

What risk level is batch_compress_images? +

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

Can I rate-limit batch_compress_images? +

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

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

batch_compress_images is provided by the FFmpeg MCP Tool MCP server (lbjwt/ffmpeg-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.