update_subscription_contract_product

WHAT IT DOES

What update_subscription_contract_product does on Shopify Graphql

AI agents use update_subscription_contract_product 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_subscription_contract_product needs a policy

This tool creates or modifies subscription contract data reversibly. While it affects financial obligations (subscription pricing), the tool itself performs Write operations (modifying contract terms) rather than moving money directly. Misuse could alter customer subscriptions, changing what they receive or their billing rate, making this high-severity.

From the tool's definition Tool description states 'Change a product or product price in a subscription contract' — this modifies existing subscription data (product selection and pricing) which directly affects an active recurring billing arrangement.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_subscription_contract_product Rate-limited

update_subscription_contract_product 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_subscription_contract_product": {
      "limits": [
        {
          "counter": "update_subscription_contract_product_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_subscription_contract_product

What does the update_subscription_contract_product tool do? +

Change a product or product price in a subscription contract. 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_subscription_contract_product? +

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

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

Can I rate-limit update_subscription_contract_product? +

Yes. Add a rate_limit block to the update_subscription_contract_product 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_subscription_contract_product completely? +

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

update_subscription_contract_product 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.