hardhat_config_add_network · HashPilot MCP: Risk & Policy

WHAT IT DOES

What hardhat_config_add_network does on HashPilot

AI agents use hardhat_config_add_network to create or update resources in HashPilot — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your HashPilot environment.

WHY IT NEEDS A POLICY

Why hardhat_config_add_network needs a policy

This tool creates or modifies hardhat configuration by generating and adding network configuration snippets. While configuration changes are typically reversible (can be edited or removed), this is a Write operation. Severity is medium because misconfiguration could cause transaction failures, routing errors, or indirect financial impact if connected to real networks with actual value.

From the tool's definition Tool name includes 'add_network' and description states 'Generate network configuration snippet for hardhat.config.js', indicating creation or modification of configuration files.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

hardhat_config_add_network Rate-limited

hardhat_config_add_network stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hardhat_config_add_network": {
      "limits": [
        {
          "counter": "hardhat_config_add_network_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches HashPilot, so you can run agents against it safely.

FAQ

Questions about hardhat_config_add_network

What does the hardhat_config_add_network tool do? +

Generate network configuration snippet for hardhat.config.js. It is categorised as a Write tool in the HashPilot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on hardhat_config_add_network? +

Register the HashPilot MCP server in PolicyLayer and add a rule for hardhat_config_add_network: 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 HashPilot. Nothing to install.

What risk level is hardhat_config_add_network? +

hardhat_config_add_network is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit hardhat_config_add_network? +

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

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

hardhat_config_add_network is provided by the HashPilot MCP server (justmert/hashpilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.