image_create_favicon · TSCodex MCP Images MCP: Risk & Policy

WHAT IT DOES

What image_create_favicon does on TSCodex MCP Images

AI agents use image_create_favicon 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_create_favicon needs a policy

The tool creates new favicon assets and configuration files (site.webmanifest, HTML code snippets) but does not modify existing data irreversibly or execute arbitrary code. The blast radius is minimal—generated files can be easily deleted or replaced. This is straightforward file creation, making it a Write operation with low severity.

From the tool's definition Tool description states it 'generates multiple sizes' and 'provides HTML code for integration', indicating creation of files and metadata rather than modification of existing data.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

image_create_favicon Rate-limited

image_create_favicon 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_create_favicon": {
      "limits": [
        {
          "counter": "image_create_favicon_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_create_favicon

What does the image_create_favicon tool do? +

Create favicon from image. Generates multiple sizes (16x16, 32x32, 48x48, 180x180, 192x192, 512x512), site.webmanifest for PWA, and provides HTML code for integration. 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_create_favicon? +

Register the TSCodex MCP Images MCP server in PolicyLayer and add a rule for image_create_favicon: 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_create_favicon? +

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

Can I rate-limit image_create_favicon? +

Yes. Add a rate_limit block to the image_create_favicon 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_create_favicon completely? +

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

image_create_favicon 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.