Create a new payment customization
AI agents use create_payment_customization to commit financial operations through Shopify Graphql — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Creating payment customizations on a Shopify store can alter payment terms, methods, pricing, or financial workflows. This is a Financial tool because it modifies financial configurations and payment flows. While it doesn't directly move money (which would be critical), it creates conditions that affect financial transactions.
From the tool's definition Tool name is 'create_payment_customization' and description states it creates 'a new payment customization' within Shopify's payment systems. The server context indicates 'comprehensive access to the Shopify Admin GraphQL API' for managing Shopify stores.
Attacks that exploit this kind of access
Create a new payment customization. It is categorised as a Financial tool in the Shopify Graphql MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Shopify Graphql MCP server in PolicyLayer and add a rule for create_payment_customization: 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.
create_payment_customization is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the create_payment_customization 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.
Set action: deny in the PolicyLayer policy for create_payment_customization. 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.
create_payment_customization 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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