create_collective · Collectives MCP: Risk & Policy

WHAT IT DOES

What create_collective does on Collectives

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

WHY IT NEEDS A POLICY

Why create_collective needs a policy

This tool creates a new collective and associated Nextcloud Team, which are new data objects. Creation is reversible (the collective and team can be deleted), so this is a Write operation rather than Destructive. The severity is medium because creating many collectives could consume resources or clutter the workspace, but the action itself is not irreversible or dangerous.

From the tool's definition Tool name 'create_collective' and description 'Create a new Collective. Also creates the underlying Nextcloud Team.' indicate the tool creates new data structures reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_collective Rate-limited

create_collective 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_collective": {
      "limits": [
        {
          "counter": "create_collective_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 Collectives, so you can run agents against it safely.

FAQ

Questions about create_collective

What does the create_collective tool do? +

Create a new Collective. Also creates the underlying Nextcloud Team. Optionally set an emoji icon. It is categorised as a Write tool in the Collectives 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_collective? +

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

What risk level is create_collective? +

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

Can I rate-limit create_collective? +

Yes. Add a rate_limit block to the create_collective 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_collective completely? +

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

create_collective is provided by the Collectives MCP server (megamaced/nc_collectives-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.