run_replication · Truenas Ws MCP: Risk & Policy

WHAT IT DOES

What run_replication does on Truenas Ws

AI agents invoke run_replication to trigger actions in Truenas Ws. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why run_replication needs a policy

This tool triggers immediate execution of a replication task, which involves initiating data transfer/synchronization operations to remote or local targets. While replication itself is not inherently destructive or financial, it is an Execute action because it initiates an external operation with side effects that depend on task configuration.

From the tool's definition Tool name 'run_replication' combined with description 'Trigger a replication task to run immediately' indicates execution of an external operation (data replication) whose effects depend on configured replication targets and schedules.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

run_replication Rate-limited

run_replication stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "run_replication": {
      "limits": [
        {
          "counter": "run_replication_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about run_replication

What does the run_replication tool do? +

Trigger a replication task to run immediately. It is categorised as a Execute tool in the Truenas Ws MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run_replication? +

Register the Truenas Ws MCP server in PolicyLayer and add a rule for run_replication: 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 Truenas Ws. Nothing to install.

What risk level is run_replication? +

run_replication is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit run_replication? +

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

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

run_replication is provided by the Truenas Ws MCP server (thoriphes/truenas-ws-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.