close_return · Shopify Graphql MCP: Risk & Policy

WHAT IT DOES

What close_return does on Shopify Graphql

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

WHY IT NEEDS A POLICY

Why close_return needs a policy

This tool performs a write operation that modifies return status in a Shopify store. While the operation is reversible (a closed return can potentially be reopened), it represents a material change to business data and could impact order fulfillment workflows, customer service processes, and financial reconciliation.

From the tool's definition Tool name 'close_return' and description 'Close a return' indicate a state-changing operation on a return object in Shopify. This modifies the status of a return entity, which is a reversible state change (returns can be reopened).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

close_return Rate-limited

close_return 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": {
    "close_return": {
      "limits": [
        {
          "counter": "close_return_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 Shopify Graphql, so you can run agents against it safely.

FAQ

Questions about close_return

What does the close_return tool do? +

Close a return. It is categorised as a Write tool in the Shopify Graphql MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on close_return? +

Register the Shopify Graphql MCP server in PolicyLayer and add a rule for close_return: 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 Shopify Graphql. Nothing to install.

What risk level is close_return? +

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

Can I rate-limit close_return? +

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

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

close_return is provided by the Shopify Graphql MCP server (uvu-store/shopify-graphql-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.