warden_run_unit_tests

THE RISK

High Risk

Why warden_run_unit_tests needs a policy

This tool executes arbitrary code (the PHPUnit test suite) whose effects depend on the test files present and their assertions. While unit tests are typically benign, PHPUnit execution can have side effects including filesystem modifications, database state changes (if tests use fixtures), external API calls, or environment variable modifications.

From the tool's definition Tool name 'warden_run_unit_tests' and description explicitly states it 'Run[s] unit tests using PHPUnit in the php-fpm container', which involves executing code (PHPUnit test suite execution) within a containerized environment.

Documented attack patterns abuse exactly the kind of access warden_run_unit_tests gives an agent:

POLICY

How to control warden_run_unit_tests

PolicyLayer is an MCP gateway — it sits between your AI agents and Warden Magento MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for warden_run_unit_tests:

policy.json

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

warden_run_unit_tests 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.

Create a free account and register Warden Magento MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 11 Warden Magento MCP Server tools →

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Go deeper

High-risk tools in Warden Magento MCP Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about warden_run_unit_tests

What does the warden_run_unit_tests tool do? +

Run unit tests using PHPUnit in the php-fpm container. It is categorised as a Execute tool in the Warden Magento MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on warden_run_unit_tests? +

Register the Warden Magento MCP Server MCP server in PolicyLayer and add a rule for warden_run_unit_tests: 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 Warden Magento MCP Server. Nothing to install.

What risk level is warden_run_unit_tests? +

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

Can I rate-limit warden_run_unit_tests? +

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

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

warden_run_unit_tests is provided by the Warden Magento MCP Server MCP server (run-as-root/warden-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Warden Magento MCP Server tool call.

Start from Warden Magento MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →