browser_type

A execute tool on the Looking Glass MCP server.

SERVERLooking Glass SOURCElooking-glass-mcp

High RISK CLASS

Category Execute

Parameters 22 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-sahib-sawhney-wh-looking-glass-mcp/browser-type.md

WHAT IT DOES

What browser_type does on Looking Glass

AI agents invoke browser_type to trigger actions in Looking Glass. 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.

Parameter	Type	Required	Description
`value`	string	Yes	Text to type into the element
`selector`	string	Yes	CSS selector of the input element

Parameters from the server's own tool schema.

RISK

Why browser_type is rated High

Browser typing tools typically simulate keyboard input into web elements, which can trigger form submissions, searches, or other UI interactions. This falls under Execute as it triggers external browser operations. Empty description lowers confidence, but the name pattern in a browser automation context strongly suggests interactive input execution.

From the tool's definition Tool name 'browser_type' suggests typing text into browser input fields, which is a browser action/interaction. Description is empty, providing no additional context.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs browser_type safely

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

browser_type Rate-limited

browser_type 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": {
      "limits": [
        {
          "counter": "browser_type_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Looking Glass, apply this rule, and every browser_type call is checked against it from then on.

FAQ

Questions about browser_type

What does the browser_type tool do? +

browser_type is a execute tool on the Looking Glass MCP server. It is categorised as a Execute tool in the Looking Glass MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

What parameters does browser_type accept? +

browser_type accepts 2 parameters: value, selector. Required: value, selector. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on browser_type? +

Register the Looking Glass MCP server in PolicyLayer and add a rule for browser_type: 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 Looking Glass. Nothing to install.

What risk level is browser_type? +

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

Can I rate-limit browser_type? +

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

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

browser_type is provided by the Looking Glass MCP server (looking-glass-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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Guides

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