create_test_case · Testrail MCP: Risk & Policy

WHAT IT DOES

What create_test_case does on Testrail

AI agents use create_test_case to create or update resources in Testrail — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Testrail environment.

WHY IT NEEDS A POLICY

Why create_test_case needs a policy

This tool creates new test case records in TestRail, which is a reversible write operation. While it modifies the test management system state, the action can be undone by deleting the created test case. The severity is medium because misuse could lead to test suite pollution, incorrect test data, or workflow disruption, but does not cause permanent data loss or financial impact.

From the tool's definition Tool name 'create_test_case' and description 'Create a single test case in a TestRail section' indicate data creation in TestRail.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_test_case Rate-limited

create_test_case stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_test_case": {
      "limits": [
        {
          "counter": "create_test_case_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about create_test_case

What does the create_test_case tool do? +

Create a single test case in a TestRail section. It is categorised as a Write tool in the Testrail MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_test_case? +

Register the Testrail MCP server in PolicyLayer and add a rule for create_test_case: 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 Testrail. Nothing to install.

What risk level is create_test_case? +

create_test_case is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_test_case? +

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

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

create_test_case is provided by the Testrail MCP server (sergey-bl/testrail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.