edit_screen

Edit an existing screen using a text prompt

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/edit-screen.md

WHAT IT DOES

What edit_screen does on Stitch MCP Server

AI agents use edit_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 edit_screen is rated Medium

This tool creates or modifies screen data reversibly—changes to UI screens can be undone, reverted, or regenerated. It does not execute arbitrary code on the user's system, delete data irreversibly, or move money.

From the tool's definition Tool name 'edit_screen' and description 'Edit an existing screen' indicate modification of existing UI screens. The server enables AI to 'generate, edit, and scaffold HTML UIs', confirming this tool modifies (writes to) screen definitions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs edit_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 edit_screen, this is the rule to start with:

edit_screen Rate-limited

edit_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": {
    "edit_screen": {
      "limits": [
        {
          "counter": "edit_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 edit_screen call is checked against it from then on.

FAQ

Questions about edit_screen

What does the edit_screen tool do? +

Edit an existing screen using a text prompt. 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 edit_screen? +

Register the Stitch MCP Server MCP server in PolicyLayer and add a rule for edit_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 edit_screen? +

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

Can I rate-limit edit_screen? +

Yes. Add a rate_limit block to the edit_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 edit_screen completely? +

Set action: deny in the PolicyLayer policy for edit_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 edit_screen? +

edit_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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