update_market · Shopify Graphql MCP: Risk & Policy

WHAT IT DOES

What update_market does on Shopify Graphql

AI agents use update_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 update_market needs a policy

The update_market tool modifies existing market records within Shopify, which is a reversible data change operation. This fits the Write category (creates or modifies data reversibly). Severity is high because markets are core configuration objects affecting store operations, international sales channels, and multi-region fulfillment rules.

From the tool's definition Tool name: update_market. Description: Update an existing market. This modifies market configuration data in a Shopify store.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_market Rate-limited

update_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": {
    "update_market": {
      "limits": [
        {
          "counter": "update_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 update_market

What does the update_market tool do? +

Update an existing 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 update_market? +

Register the Shopify Graphql MCP server in PolicyLayer and add a rule for update_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 update_market? +

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

Can I rate-limit update_market? +

Yes. Add a rate_limit block to the update_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 update_market completely? +

Set action: deny in the PolicyLayer policy for update_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 update_market? +

update_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.