network_capture · Hermes Computer Use MCP: Risk & Policy

WHAT IT DOES

What network_capture does on Hermes Computer Use

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

WHY IT NEEDS A POLICY

Why network_capture needs a policy

An AI agent can call network_capture faster than any human can review — one bad instruction and it creates or modifies resources in Hermes Computer Use by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

network_capture Rate-limited

network_capture 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": {
    "network_capture": {
      "limits": [
        {
          "counter": "network_capture_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 Hermes Computer Use, so you can run agents against it safely.

FAQ

Questions about network_capture

What does the network_capture tool do? +

network_capture. It is categorised as a Write tool in the Hermes Computer Use MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on network_capture? +

Register the Hermes Computer Use MCP server in PolicyLayer and add a rule for network_capture: 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 Hermes Computer Use. Nothing to install.

What risk level is network_capture? +

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

Can I rate-limit network_capture? +

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

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

network_capture is provided by the Hermes Computer Use MCP server (noah3521/hermes-computer-use). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.