get_browser_session

THE RISK

Low Risk

Why get_browser_session needs a policy

The name 'get_browser_session' suggests retrieving session information, which is typically a read operation. However, with an empty description, it's unclear what exactly this tool does or what data it accesses. In an EKS context, it might retrieve browser/web console session credentials or tokens. Confidence is low due to missing description.

From the tool's definition Tool name: get_browser_session — description is empty and uninformative

Documented attack patterns abuse exactly the kind of access get_browser_session gives an agent:

POLICY

How to control get_browser_session

PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon EKS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_browser_session:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_browser_session": {}
  }
}

get_browser_session is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Amazon EKS MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about get_browser_session

What does the get_browser_session tool do? +

get_browser_session. It is categorised as a Read tool in the Amazon EKS MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_browser_session? +

Register the Amazon EKS MCP Server MCP server in PolicyLayer and add a rule for get_browser_session: 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 Amazon EKS MCP Server. Nothing to install.

What risk level is get_browser_session? +

get_browser_session is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_browser_session? +

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

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

get_browser_session is provided by the Amazon EKS MCP Server MCP server (awslabs.eks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Amazon EKS MCP Server tool call.

Start from Amazon EKS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →