run_qsreplace

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/run-qsreplace.md

WHAT IT DOES

What run_qsreplace does on Pentester-MCP

AI agents invoke run_qsreplace 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 run_qsreplace is rated High

qsreplace is typically used to automate injection of payloads into URL query parameters for testing web vulnerabilities. While this is a read-then-modify operation on URLs, the execution happens against external targets and the tool's primary function is to run a specialized command that manipulates and tests web endpoints—making it Execute rather than Write.

From the tool's definition Tool name 'run_qsreplace' is from the qsreplace penetration testing utility, which processes URLs to replace query string parameters with custom payloads—a reconnaissance and exploitation technique.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs run_qsreplace 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 run_qsreplace, this is the rule to start with:

run_qsreplace Rate-limited

run_qsreplace 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": {
    "run_qsreplace": {
      "limits": [
        {
          "counter": "run_qsreplace_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 run_qsreplace call is checked against it from then on.

FAQ

Questions about run_qsreplace

What does the run_qsreplace tool do? +

run_qsreplace 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 run_qsreplace? +

Register the Pentester MCP server in PolicyLayer and add a rule for run_qsreplace: 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 run_qsreplace? +

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

Can I rate-limit run_qsreplace? +

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

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

run_qsreplace 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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