image_concat · farshid-mcp-imageProcessing MCP

WHAT IT DOES

What image_concat does on farshid-mcp-imageProcessing

AI agents use image_concat to create or update resources in farshid-mcp-imageProcessing — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your farshid-mcp-imageProcessing environment.

WHY IT NEEDS A POLICY

Why image_concat needs a policy

This tool creates a new image by combining existing images together. It produces/writes a new output image but does not delete or irreversibly modify source images. The operation is reversible in the sense that source images remain intact. Severity is low as misuse would at most produce an unintended composite image.

From the tool's definition Concatenate images horizontally or vertically (resized to common dim)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

image_concat Rate-limited

image_concat 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_concat": {
      "limits": [
        {
          "counter": "image_concat_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 farshid-mcp-imageProcessing, so you can run agents against it safely.

FAQ

Questions about image_concat

What does the image_concat tool do? +

Concatenate images horizontally or vertically (resized to common dim). It is categorised as a Write tool in the farshid-mcp-imageProcessing 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_concat? +

Register the farshid-mcp-imageProcessing MCP server in PolicyLayer and add a rule for image_concat: 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 farshid-mcp-imageProcessing. Nothing to install.

What risk level is image_concat? +

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

Can I rate-limit image_concat? +

Yes. Add a rate_limit block to the image_concat 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_concat completely? +

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

image_concat is provided by the farshid-mcp-imageProcessing MCP server (pirahansiah/farshid-mcp-imageprocessing). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.