get_network_errors

THE RISK

Low Risk

Why get_network_errors needs a policy

This tool only retrieves and reports information about failed network requests from the Chrome DevTools Protocol. It performs no modifications, deletions, code execution, or external operations.

From the tool's definition Tool name is 'get_network_errors' and description states it 'Returns a list of failed network requests.' This is purely a retrieval operation that queries network debugging data with no side effects.

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

POLICY

How to control get_network_errors

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

policy.json

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

get_network_errors 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 Chrome MCP Docker — 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

Related tools and policies

More Chrome MCP Docker tools

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All 10 Chrome MCP Docker tools →

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Go deeper

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 →

FAQ

Questions about get_network_errors

What does the get_network_errors tool do? +

Returns a list of failed network requests. It is categorised as a Read tool in the Chrome MCP Docker MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_network_errors? +

Register the Chrome MCP Docker MCP server in PolicyLayer and add a rule for get_network_errors: 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 Chrome MCP Docker. Nothing to install.

What risk level is get_network_errors? +

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

Can I rate-limit get_network_errors? +

Yes. Add a rate_limit block to the get_network_errors 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_network_errors completely? +

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

get_network_errors is provided by the Chrome MCP Docker MCP server (null-runner/chrome-mcp-docker). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Chrome MCP Docker tool call.

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

CHECK YOUR STACK →