generate_screen

Generate a UI screen from a text prompt within a project

SERVERStitch MCP Server SOURCE0x-professor/stitch-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/0x-professor-stitch-mcp-server/generate-screen.md

WHAT IT DOES

What generate_screen does on Stitch MCP Server

AI agents use generate_screen 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.

RISK

Why generate_screen is rated Medium

This tool creates new UI screens within a project, modifying the project's structure and content. This is a reversible write operation—generated screens can be edited or deleted. It does not execute arbitrary code (Execute category), nor does it destroy data irreversibly (Destructive).

From the tool's definition Tool description states it will 'Generate a UI screen from a text prompt within a project,' which creates new UI artifacts.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs generate_screen safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Stitch MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For generate_screen, this is the rule to start with:

generate_screen Rate-limited

generate_screen 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_screen": {
      "limits": [
        {
          "counter": "generate_screen_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Stitch MCP Server, apply this rule, and every generate_screen call is checked against it from then on.

FAQ

Questions about generate_screen

What does the generate_screen tool do? +

Generate a UI screen from a text prompt within a project. 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_screen? +

Register the Stitch MCP Server MCP server in PolicyLayer and add a rule for generate_screen: 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_screen? +

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

Can I rate-limit generate_screen? +

Yes. Add a rate_limit block to the generate_screen 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_screen completely? +

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

generate_screen is provided by the Stitch MCP Server MCP server (0x-professor/stitch-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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