browser_type_text · DevLab MCP Suite MCP: Risk & Policy

WHAT IT DOES

What browser_type_text does on DevLab MCP Suite

AI agents invoke browser_type_text to trigger actions in DevLab MCP Suite. 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 browser_type_text needs a policy

This tool performs a browser action by injecting text into a focused UI element, triggering an external operation whose effects depend on the arguments supplied. It can submit forms, enter credentials, or interact with web applications in ways that have side effects beyond simple data retrieval or creation.

From the tool's definition Type text into the currently focused element

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

browser_type_text Rate-limited

browser_type_text 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": {
    "browser_type_text": {
      "limits": [
        {
          "counter": "browser_type_text_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 DevLab MCP Suite, so you can run agents against it safely.

FAQ

Questions about browser_type_text

What does the browser_type_text tool do? +

Type text into the currently focused element. It is categorised as a Execute tool in the DevLab MCP Suite MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on browser_type_text? +

Register the DevLab MCP Suite MCP server in PolicyLayer and add a rule for browser_type_text: 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 DevLab MCP Suite. Nothing to install.

What risk level is browser_type_text? +

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

Can I rate-limit browser_type_text? +

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

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

browser_type_text is provided by the DevLab MCP Suite MCP server (tanguito86/devlab-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.