List all webhook subscriptions for the current app and shop. Returns only shop-scoped subscriptions, not app-scoped subscriptions.
AI agents call list_webhook_subscriptions to retrieve information from Shopify Graphql without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries existing webhook subscription data without modifying, deleting, or executing any operations. It is a read-only information retrieval operation with no side effects. The low severity reflects minimal risk from misuse—an AI could at worst enumerate webhook configurations but cannot harm data or trigger financial operations.
From the tool's definition Tool name contains 'list' and description states it 'List all webhook subscriptions' and 'Returns' data with no mention of creation, modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
List all webhook subscriptions for the current app and shop. Returns only shop-scoped subscriptions, not app-scoped subscriptions. It is categorised as a Read tool in the Shopify Graphql MCP Server, which means it retrieves data without modifying state.
Register the Shopify Graphql MCP server in PolicyLayer and add a rule for list_webhook_subscriptions: 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.
list_webhook_subscriptions is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_webhook_subscriptions 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 list_webhook_subscriptions. 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.
list_webhook_subscriptions 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.
list_webhook_subscriptions is one line of Shopify Graphql's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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