start_certipy_relay

A execute tool on the Pentester- MCP server.

SERVERPentester-MCP SOURCEhalilkirazkaya/pentester-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/halilkirazkaya-pentester-mcp/start-certipy-relay.md

WHAT IT DOES

What start_certipy_relay does on Pentester-MCP

AI agents invoke start_certipy_relay 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.

RISK

Why start_certipy_relay is rated High

Certipy relay attacks execute complex multi-stage exploitation sequences against Active Directory and certificate services, establishing persistence and lateral movement with effects entirely dependent on network configuration and target state. The tool initiates external operations (relay attacks) whose consequences cannot be predicted or easily reversed.

From the tool's definition Tool name 'start_certipy_relay' combined with server context: Pentester-MCP enables 'autonomously execute over 200 open-source penetration testing tools' including 'web exploitation' and 'brute-forcing.' Certipy is a known AD/certificate-based relay attack…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs start_certipy_relay safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Pentester-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For start_certipy_relay, this is the rule to start with:

start_certipy_relay Rate-limited

start_certipy_relay 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "start_certipy_relay": {
      "limits": [
        {
          "counter": "start_certipy_relay_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Pentester-MCP, apply this rule, and every start_certipy_relay call is checked against it from then on.

FAQ

Questions about start_certipy_relay

What does the start_certipy_relay tool do? +

start_certipy_relay is a execute tool on the Pentester MCP server. 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.

How do I enforce a policy on start_certipy_relay? +

Register the Pentester MCP server in PolicyLayer and add a rule for start_certipy_relay: 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.

What risk level is start_certipy_relay? +

start_certipy_relay is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit start_certipy_relay? +

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

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

start_certipy_relay 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.

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