Capture live network traffic from an interface. Writes to a
AI agents invoke live_capture to trigger actions in Mcp Wireshark. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Live packet capture is an active operation that hooks into a network interface and writes captured data, constituting an Execute-level action. It has significant blast radius as it can intercept sensitive network traffic (credentials, PII, session tokens) across the system. The description is truncated but clearly indicates it writes captured data somewhere, confirming side effects beyond simple reads.
From the tool's definition 'Capture live network traffic from an interface. Writes to a' — tool actively captures live traffic and writes output, triggering external network monitoring operations
Documented attack patterns abuse exactly the kind of access live_capture gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Wireshark, and nothing reaches the server without passing your rules. This is the rule we recommend for live_capture:
{
"version": "1",
"default": "deny",
"tools": {
"live_capture": {
"limits": [
{
"counter": "live_capture_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}live_capture stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Capture live network traffic from an interface. Writes to a. It is categorised as a Execute tool in the Mcp Wireshark MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Mcp Wireshark MCP server in PolicyLayer and add a rule for live_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 Mcp Wireshark. Nothing to install.
live_capture is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the live_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.
Set action: deny in the PolicyLayer policy for live_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.
live_capture is provided by the Mcp Wireshark MCP server (khuynh22/mcp-wireshark). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Wireshark, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
13 Mcp Wireshark tools catalogued and risk-classified — across an index of 43,000+ MCP servers.