List all BTCPay Server stores accessible with the current API key.
AI agents call list_stores to retrieve information from BTCPay Server MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates existing stores, performing a read-only operation. There is no creation, modification, deletion, or execution of external code. The blast radius of misuse is minimal—an agent could only learn which stores exist within the scope of the API key's permissions, which is informational only.
From the tool's definition Tool name 'list_stores' and description 'List all BTCPay Server stores accessible with the current API key' indicate a query/retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all BTCPay Server stores accessible with the current API key. It is categorised as a Read tool in the BTCPay Server MCP MCP Server, which means it retrieves data without modifying state.
Register the BTCPay Server MCP server in PolicyLayer and add a rule for list_stores: 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 BTCPay Server MCP. Nothing to install.
list_stores 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_stores 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_stores. 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_stores is provided by the BTCPay Server MCP server (ThomsenDrake/btcpay-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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