open_fulfillment_order · Shopify Graphql MCP: Risk & Policy

WHAT IT DOES

What open_fulfillment_order does on Shopify Graphql

AI agents use open_fulfillment_order 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 open_fulfillment_order needs a policy

This tool changes the status of a fulfillment order from closed/pending to 'open', which is a reversible modification of data. It does not delete or destroy data (ruling out Destructive), does not execute arbitrary code or scripts (ruling out Execute), does not involve financial transactions (ruling out Financial), and goes beyond simple data retrieval (ruling out Read).

From the tool's definition Tool name 'open_fulfillment_order' and description 'Mark a fulfillment order as open, ready for fulfillment' indicate a state change operation on an existing order entity.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

open_fulfillment_order Rate-limited

open_fulfillment_order 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": {
    "open_fulfillment_order": {
      "limits": [
        {
          "counter": "open_fulfillment_order_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 open_fulfillment_order

What does the open_fulfillment_order tool do? +

Mark a fulfillment order as open, ready for fulfillment. 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 open_fulfillment_order? +

Register the Shopify Graphql MCP server in PolicyLayer and add a rule for open_fulfillment_order: 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 open_fulfillment_order? +

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

Can I rate-limit open_fulfillment_order? +

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

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

open_fulfillment_order 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.