create_cycle · Plane MCP: Risk & Policy

WHAT IT DOES

What create_cycle does on Plane

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

WHY IT NEEDS A POLICY

Why create_cycle needs a policy

This tool creates a new cycle (likely a time-boxed iteration or sprint in project management). Creation of entities is a Write operation—it modifies state but can typically be reversed by deletion. Without destructive operations (irreversible deletion/overwrite), it does not rise to Destructive or Execute severity.

From the tool's definition Tool name 'create_cycle' and context of sibling tools (create_initiative, create_project, create_module, create_milestone) indicate data creation. The 'create_' prefix combined with the Plane project management API context confirms reversible data creation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_cycle Rate-limited

create_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": {
    "create_cycle": {
      "limits": [
        {
          "counter": "create_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 Plane, so you can run agents against it safely.

FAQ

Questions about create_cycle

What does the create_cycle tool do? +

create_cycle. It is categorised as a Write tool in the Plane 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_cycle? +

Register the Plane MCP server in PolicyLayer and add a rule for create_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 Plane. Nothing to install.

What risk level is create_cycle? +

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

Can I rate-limit create_cycle? +

Yes. Add a rate_limit block to the create_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 create_cycle completely? +

Set action: deny in the PolicyLayer policy for create_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 create_cycle? +

create_cycle is provided by the Plane MCP server (@makeplane/plane-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.