generate_js · Website Generator MCP Server MCP

WHAT IT DOES

What generate_js does on Website Generator MCP Server

AI agents invoke generate_js to trigger actions in Website Generator MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why generate_js needs a policy

Generating JavaScript code is classified as Execute because JavaScript is executable code that can perform a wide range of actions when run, including DOM manipulation, network requests, data exfiltration, or other side effects. An AI agent misusing this tool could generate malicious scripts. The blast radius is high since the generated code could be injected into web pages and executed by users.

From the tool's definition 'Generate JavaScript code' — produces executable JavaScript code that can run arbitrary logic in a browser or environment

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_js Rate-limited

generate_js stays usable, but rate-capped — a runaway agent can't fire it dozens of times 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_js": {
      "limits": [
        {
          "counter": "generate_js_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Website Generator MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_js

What does the generate_js tool do? +

Generate JavaScript code for a website using AI. It is categorised as a Execute tool in the Website Generator MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on generate_js? +

Register the Website Generator MCP Server MCP server in PolicyLayer and add a rule for generate_js: 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 Website Generator MCP Server. Nothing to install.

What risk level is generate_js? +

generate_js is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit generate_js? +

Yes. Add a rate_limit block to the generate_js 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_js completely? +

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

generate_js is provided by the Website Generator MCP Server MCP server (lasindu-themiya/mcpwebgenerator). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.