create_market · Shopify Graphql MCP: Risk & Policy

WHAT IT DOES

What create_market does on Shopify Graphql

AI agents use create_market 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 create_market needs a policy

Creating a new market in Shopify adds a new sales channel/market configuration to the store, which modifies store state reversibly. This is a Write operation (not Read since it has side effects, not Destructive since it can be undone by deleting the market, not Financial since it doesn't move money).

From the tool's definition Tool name 'create_market' and description 'Create a new market' indicate data creation. The Shopify Admin GraphQL API context confirms this modifies store configuration, which is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_market Rate-limited

create_market 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_market": {
      "limits": [
        {
          "counter": "create_market_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 create_market

What does the create_market tool do? +

Create a new market. 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 create_market? +

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

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

Can I rate-limit create_market? +

Yes. Add a rate_limit block to the create_market 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_market completely? +

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

create_market 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.