browser_select_option · Awslabs Valkey MCP: Risk & Policy

WHAT IT DOES

What browser_select_option does on Awslabs Valkey

AI agents invoke browser_select_option to trigger actions in Awslabs Valkey. 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_select_option needs a policy

The tool name implies a browser action (selecting an option in a UI element), which falls under Execute category as it triggers external browser operations. However, with no description available, confidence is low. Browser automation tools can have significant blast radius if misused by an AI agent to interact with web interfaces unexpectedly.

From the tool's definition Tool name 'browser_select_option' suggests browser automation/interaction, but the description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

browser_select_option Rate-limited

browser_select_option 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_select_option": {
      "limits": [
        {
          "counter": "browser_select_option_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 Awslabs Valkey, so you can run agents against it safely.

FAQ

Questions about browser_select_option

What does the browser_select_option tool do? +

browser_select_option. It is categorised as a Execute tool in the Awslabs Valkey 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_select_option? +

Register the Awslabs Valkey MCP server in PolicyLayer and add a rule for browser_select_option: 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 Awslabs Valkey. Nothing to install.

What risk level is browser_select_option? +

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

Can I rate-limit browser_select_option? +

Yes. Add a rate_limit block to the browser_select_option 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_select_option completely? +

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

browser_select_option is provided by the Awslabs Valkey MCP server (awslabs.valkey-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.