npm_test_certificate_http_reach · Nginx Manager MCP

WHAT IT DOES

What npm_test_certificate_http_reach does on Nginx Manager

AI agents invoke npm_test_certificate_http_reach to trigger actions in Nginx Manager. 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.

WHY IT NEEDS A POLICY

Why npm_test_certificate_http_reach needs a policy

This tool actively probes/tests external domains over HTTP to verify reachability, triggering an outbound network operation. It's not a passive read of stored data — it executes an external connectivity check. Misuse could be used to probe internal or external hosts, making it Execute category with medium severity.

From the tool's definition Test whether domains are HTTP-reachable before requesting a cert

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

npm_test_certificate_http_reach Rate-limited

npm_test_certificate_http_reach 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": {
    "npm_test_certificate_http_reach": {
      "limits": [
        {
          "counter": "npm_test_certificate_http_reach_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Nginx Manager, so you can run agents against it safely.

FAQ

Questions about npm_test_certificate_http_reach

What does the npm_test_certificate_http_reach tool do? +

Test whether domains are HTTP-reachable before requesting a cert. It is categorised as a Execute tool in the Nginx Manager MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on npm_test_certificate_http_reach? +

Register the Nginx Manager MCP server in PolicyLayer and add a rule for npm_test_certificate_http_reach: 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 Nginx Manager. Nothing to install.

What risk level is npm_test_certificate_http_reach? +

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

Can I rate-limit npm_test_certificate_http_reach? +

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

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

npm_test_certificate_http_reach is provided by the Nginx Manager MCP server (kognar-ai/ngnix-manager-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.