Create a refund for an order. Supports refunding line items, shipping costs, and processing refunds through different payment methods.
AI agents use create_refund to commit financial operations through Shopify Graphql — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Refunds are inherently financial transactions that reverse payments and return funds to customers. While the tool does not irreversibly delete data (suggesting it's not Destructive), it commits financial obligations and moves money, which is the defining characteristic of the Financial category.
From the tool's definition Tool description states it 'Create a refund for an order' and 'processing refunds through different payment methods.' Refunds directly move money back to customers, constituting a financial operation.
Attacks that exploit this kind of access
Create a refund for an order. Supports refunding line items, shipping costs, and processing refunds through different payment methods. 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_refund: 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_refund 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_refund 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_refund. 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_refund 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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