run_test_iteration

THE RISK

High Risk

Why run_test_iteration needs a policy

This tool triggers execution of test code, making it an Execute category risk rather than Read or Write. The severity is medium because test execution has a defined scope (single iteration, monitoring context) and typically operates within isolated test environments rather than production systems.

From the tool's definition Tool name 'run_test_iteration' and description 'Executes a single test iteration with monitoring' indicate active execution of test code.

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

POLICY

How to control run_test_iteration

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

policy.json

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

run_test_iteration 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 MockLoop 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

More MockLoop MCP Server tools

Execute deploy_scenario Deploys scenario to MockLoop server. Execute execute_test_plan Combines scenario generation and deployment in one operation. Execute run_load_test Executes load testing with configurable parameters. Execute run_security_test Executes security testing scenarios for vulnerability assessment. Execute generate_mock_api Generates a FastAPI mock server from an API specification (e.g., OpenAPI). Execute schedule_test_suite Schedules automated test suite execution. Execute switch_scenario Switches active scenario on a server. Write end_test_session Ends a test session and generates final reports.

All 30 MockLoop MCP Server tools →

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Go deeper

High-risk tools in MockLoop 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 run_test_iteration

What does the run_test_iteration tool do? +

Executes a single test iteration with monitoring. It is categorised as a Execute tool in the MockLoop 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 run_test_iteration? +

Register the MockLoop MCP Server MCP server in PolicyLayer and add a rule for run_test_iteration: 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 MockLoop MCP Server. Nothing to install.

What risk level is run_test_iteration? +

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

Can I rate-limit run_test_iteration? +

Yes. Add a rate_limit block to the run_test_iteration 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_test_iteration completely? +

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

run_test_iteration is provided by the MockLoop MCP Server MCP server (mockloop/mockloop-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MockLoop MCP Server tool call.

Start from MockLoop 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 →