AI agents invoke run_pwncat_scan to trigger actions in Pentester-MCP. 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.
This tool executes external penetration testing operations (pwncat network scanning/exploitation). While the description is empty, the tool name combined with the server's stated purpose (penetration testing, web exploitation) and architecture (autonomous execution of 200+ such tools) indicates this triggers code/command execution whose effects depend on scan arguments (targets, ports, payloads).
From the tool's definition Tool name 'run_pwncat_scan' combined with server context describing 'penetration testing tools' and 'web exploitation' indicates execution of pwncat, a well-known tool for network reconnaissance and exploitation.
Documented attack patterns abuse exactly the kind of access run_pwncat_scan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pentester-MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for run_pwncat_scan:
{
"version": "1",
"default": "deny",
"tools": {
"run_pwncat_scan": {
"limits": [
{
"counter": "run_pwncat_scan_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}run_pwncat_scan 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.
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run_pwncat_scan. It is categorised as a Execute tool in the Pentester-MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Pentester- MCP server in PolicyLayer and add a rule for run_pwncat_scan: 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 Pentester-MCP. Nothing to install.
run_pwncat_scan 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 run_pwncat_scan 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 run_pwncat_scan. 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.
run_pwncat_scan is provided by the Pentester- MCP server (halilkirazkaya/pentester-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Pentester-MCP, 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.
337 Pentester-MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.