update-browser · TgeBrowser MCP Server MCP: Risk & Policy

WHAT IT DOES

What update-browser does on TgeBrowser MCP Server

AI agents use update-browser to create or update resources in TgeBrowser MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your TgeBrowser MCP Server environment.

WHY IT NEEDS A POLICY

Why update-browser needs a policy

The tool modifies browser state/configuration rather than reading data (Read), executing arbitrary code (Execute), or destroying data (Destructive). Update operations are reversible Write actions.

From the tool's definition Tool name 'update-browser' combined with description 'Update the browser' indicates modification of browser configuration/state. The required parameters 'envId' and 'browserName' target specific browser instances.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update-browser Rate-limited

update-browser 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": {
    "update-browser": {
      "limits": [
        {
          "counter": "update-browser_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about update-browser

What does the update-browser tool do? +

Update the browser. envId and browserName are required. It is categorised as a Write tool in the TgeBrowser 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 update-browser? +

Register the TgeBrowser MCP Server MCP server in PolicyLayer and add a rule for update-browser: 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 TgeBrowser MCP Server. Nothing to install.

What risk level is update-browser? +

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

Can I rate-limit update-browser? +

Yes. Add a rate_limit block to the update-browser 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 update-browser completely? +

Set action: deny in the PolicyLayer policy for update-browser. 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 update-browser? +

update-browser is provided by the TgeBrowser MCP Server MCP server (tuguang2025/tgebrowser-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.