get_browser_session

THE RISK

Low Risk

Why get_browser_session needs a policy

With no description available, classification is uncertain. The name 'get_browser_session' superficially suggests a Read operation (retrieving session data), but it could also involve Execute-level browser automation. Given the empty description and the server context (Bedrock Knowledge Base Retrieval), confidence is very low.

From the tool's definition Tool name is 'get_browser_session' but the description is empty and uninformative. The tool name alone suggests reading/retrieving a browser session.

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 Bedrock Knowledge Base Retrieval 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": {
      "limits": [
        {
          "counter": "get_browser_session_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

get_browser_session gets a rate cap, and everything else on the server is denied unless you say otherwise.

Create a free account and register Amazon Bedrock Knowledge Base Retrieval 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.

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

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All 805 Amazon Bedrock Knowledge Base Retrieval MCP Server tools →

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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.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
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 Other tool in the Amazon Bedrock Knowledge Base Retrieval MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on get_browser_session? +

Register the Amazon Bedrock Knowledge Base Retrieval 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 Bedrock Knowledge Base Retrieval MCP Server. Nothing to install.

What risk level is get_browser_session? +

get_browser_session is a Other 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 Bedrock Knowledge Base Retrieval MCP Server MCP server (awslabs.bedrock-kb-retrieval-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 Bedrock Knowledge Base Retrieval MCP Server tool call.

Start from Amazon Bedrock Knowledge Base Retrieval 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 →