type_into_element · Tscafejr MCP: Risk & Policy

WHAT IT DOES

What type_into_element does on Tscafejr

AI agents invoke type_into_element to trigger actions in Tscafejr. 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 type_into_element needs a policy

This tool actively navigates a browser, performs UI interactions (typing into DOM elements via Puppeteer), and captures screenshots — all real browser actions that trigger external operations. It can be misused to submit forms, enter credentials, or interact with arbitrary web applications, making it Execute with high severity.

From the tool's definition Navigates, types text into a selector, and returns a screenshot

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

type_into_element Rate-limited

type_into_element 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": {
    "type_into_element": {
      "limits": [
        {
          "counter": "type_into_element_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 Tscafejr, so you can run agents against it safely.

FAQ

Questions about type_into_element

What does the type_into_element tool do? +

Navigates, types text into a selector, and returns a screenshot. It is categorised as a Execute tool in the Tscafejr MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on type_into_element? +

Register the Tscafejr MCP server in PolicyLayer and add a rule for type_into_element: 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 Tscafejr. Nothing to install.

What risk level is type_into_element? +

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

Can I rate-limit type_into_element? +

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

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

type_into_element is provided by the Tscafejr MCP server (tscafejr/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.