create_pool · Session Buddy MCP: Risk & Policy

WHAT IT DOES

What create_pool does on Session Buddy

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

WHY IT NEEDS A POLICY

Why create_pool needs a policy

The tool creates a new computational resource (worker pool) rather than reading, executing arbitrary code, destroying data, or moving money. Creation of infrastructure/resources is a Write-class action.

From the tool's definition Tool description states 'Create a new worker pool' — a creation operation that modifies state by instantiating a new pool resource. This is reversible via deletion or reconfiguration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_pool Rate-limited

create_pool 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_pool": {
      "limits": [
        {
          "counter": "create_pool_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 Session Buddy, so you can run agents against it safely.

FAQ

Questions about create_pool

What does the create_pool tool do? +

Create a new worker pool with exactly 3 workers. It is categorised as a Write tool in the Session Buddy 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_pool? +

Register the Session Buddy MCP server in PolicyLayer and add a rule for create_pool: 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 Session Buddy. Nothing to install.

What risk level is create_pool? +

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

Can I rate-limit create_pool? +

Yes. Add a rate_limit block to the create_pool 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_pool completely? +

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

create_pool is provided by the Session Buddy MCP server (lesleslie/session-buddy). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.