generate_dark_mode · Stitch MCP Server MCP: Risk & Policy

WHAT IT DOES

What generate_dark_mode does on Stitch MCP Server

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

WHY IT NEEDS A POLICY

Why generate_dark_mode needs a policy

This tool creates new design content (a dark-mode variant screen) but does not delete, destroy, or irreversibly modify existing data. The original light-mode screen remains unchanged. The operation is reversible—users can regenerate the light mode or delete the dark variant. It fits the Write category (creates or modifies data reversibly).

From the tool's definition Generates a dark-mode variant of a screen; "regenerate" and "adjusted contrast" indicate the tool creates modified design output based on input parameters.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_dark_mode Rate-limited

generate_dark_mode 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": {
    "generate_dark_mode": {
      "limits": [
        {
          "counter": "generate_dark_mode_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 Stitch MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_dark_mode

What does the generate_dark_mode tool do? +

Takes a light-mode screen and generates a dark-mode variant. Analyses the existing color palette and instructs Stitch to regenerate with inverted brightness, adjusted contrast, and preserved brand accents. It is categorised as a Write tool in the Stitch MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_dark_mode? +

Register the Stitch MCP Server MCP server in PolicyLayer and add a rule for generate_dark_mode: 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 Stitch MCP Server. Nothing to install.

What risk level is generate_dark_mode? +

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

Can I rate-limit generate_dark_mode? +

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

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

generate_dark_mode is provided by the Stitch MCP Server MCP server (oogleyskr/stitch-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.