update_test_cycle · Zephyr Scale MCP Server MCP

WHAT IT DOES

What update_test_cycle does on Zephyr Scale MCP Server

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

WHY IT NEEDS A POLICY

Why update_test_cycle needs a policy

This tool creates or modifies data reversibly—updating a test cycle can be undone by reverting changes or manually correcting the data. It does not execute arbitrary code, delete data irreversibly, move money, or have uncontrollable side effects.

From the tool's definition Tool name 'update_test_cycle' and description 'Update an existing test cycle' indicate modification of test cycle data through the Zephyr Scale REST API.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_test_cycle Rate-limited

update_test_cycle 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": {
    "update_test_cycle": {
      "limits": [
        {
          "counter": "update_test_cycle_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 Zephyr Scale MCP Server, so you can run agents against it safely.

FAQ

Questions about update_test_cycle

What does the update_test_cycle tool do? +

Update an existing test cycle. It is categorised as a Write tool in the Zephyr Scale MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_test_cycle? +

Register the Zephyr Scale MCP Server MCP server in PolicyLayer and add a rule for update_test_cycle: 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 Zephyr Scale MCP Server. Nothing to install.

What risk level is update_test_cycle? +

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

Can I rate-limit update_test_cycle? +

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

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

update_test_cycle is provided by the Zephyr Scale MCP Server MCP server (metquay/zephyr-scale-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.