image_crop_custom · TSCodex MCP Images MCP: Risk & Policy

WHAT IT DOES

What image_crop_custom does on TSCodex MCP Images

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

WHY IT NEEDS A POLICY

Why image_crop_custom needs a policy

Image cropping is a reversible modification operation—the original image data can be recovered from backups or re-uploaded. This makes it Write rather than Destructive. Severity is medium because misuse could corrupt or alter important image assets, but the effect is limited to that specific file and is recoverable. Confidence is high based on explicit description of modification behavior.

From the tool's definition Tool performs image cropping with "exact coordinates" and explicit parameters (x, y, width, height), which modifies image data. The description states paths are "relative to the project root," indicating file system operations that alter stored images.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

image_crop_custom Rate-limited

image_crop_custom 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": {
    "image_crop_custom": {
      "limits": [
        {
          "counter": "image_crop_custom_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 TSCodex MCP Images, so you can run agents against it safely.

FAQ

Questions about image_crop_custom

What does the image_crop_custom tool do? +

Crop image by exact coordinates. Useful for precise cropping with specified x, y, width, and height. All paths are relative to the project root. It is categorised as a Write tool in the TSCodex MCP Images MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on image_crop_custom? +

Register the TSCodex MCP Images MCP server in PolicyLayer and add a rule for image_crop_custom: 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 TSCodex MCP Images. Nothing to install.

What risk level is image_crop_custom? +

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

Can I rate-limit image_crop_custom? +

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

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

image_crop_custom is provided by the TSCodex MCP Images MCP server (unbywyd/tscodex-mcp-images). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.