set_transfer_lock · Spaceship MCP: Risk & Policy

WHAT IT DOES

What set_transfer_lock does on Spaceship

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

WHY IT NEEDS A POLICY

Why set_transfer_lock needs a policy

Setting a transfer lock modifies the domain's security state in a reversible way (it can be enabled or disabled). However, disabling a transfer lock could expose the domain to unauthorized transfers, which would be catastrophic — so misuse has high blast radius even if the action itself is technically reversible.

From the tool's definition Enable or disable transfer lock for a domain

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_transfer_lock Rate-limited

set_transfer_lock 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": {
    "set_transfer_lock": {
      "limits": [
        {
          "counter": "set_transfer_lock_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about set_transfer_lock

What does the set_transfer_lock tool do? +

Enable or disable transfer lock for a domain. It is categorised as a Write tool in the Spaceship MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_transfer_lock? +

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

What risk level is set_transfer_lock? +

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

Can I rate-limit set_transfer_lock? +

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

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

set_transfer_lock is provided by the Spaceship MCP server (naveenkm007/spaceship-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.