browser_snapshot

THE RISK

Low Risk

Why browser_snapshot needs a policy

With no description available, it's unclear what this tool does. The name suggests capturing a browser state/screenshot, which would typically be a Read operation, but its presence on a MySQL MCP server is anomalous. Confidence is very low due to lack of information.

From the tool's definition Tool description is empty and uninformative; the name 'browser_snapshot' does not clearly align with the MySQL MCP server context.

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

POLICY

How to control browser_snapshot

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "browser_snapshot": {
      "limits": [
        {
          "counter": "browser_snapshot_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

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

Create a free account and register AWS Labs MySQL 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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Go deeper

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 →

FAQ

Questions about browser_snapshot

What does the browser_snapshot tool do? +

browser_snapshot. It is categorised as a Other tool in the AWS Labs MySQL MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on browser_snapshot? +

Register the AWS Labs MySQL MCP Server MCP server in PolicyLayer and add a rule for browser_snapshot: 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 AWS Labs MySQL MCP Server. Nothing to install.

What risk level is browser_snapshot? +

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

Can I rate-limit browser_snapshot? +

Yes. Add a rate_limit block to the browser_snapshot 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_snapshot completely? +

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

browser_snapshot is provided by the AWS Labs MySQL MCP Server MCP server (awslabs.mysql-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 AWS Labs MySQL MCP Server tool call.

Start from AWS Labs MySQL 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 →