Check delivery and warehouse pickup availability for cart items or a specific product
AI agents call get_delivery_options to retrieve information from Mcp Costco 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 delivery/pickup information for items, which is a read-only operation. It has no side effects, does not execute external commands, does not modify data, does not delete anything, and does not involve financial transactions. The blast radius of misuse is minimal—an attacker could only gain information about delivery options.
From the tool's definition Tool name 'get_delivery_options' and description 'Check delivery and warehouse pickup availability' indicate a query operation that retrieves information about availability and options without modifying data or performing transactions.
Attacks that exploit this kind of access
Check delivery and warehouse pickup availability for cart items or a specific product. It is categorised as a Read tool in the Mcp Costco MCP Server, which means it retrieves data without modifying state.
Register the Mcp Costco MCP server in PolicyLayer and add a rule for get_delivery_options: 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 Mcp Costco. Nothing to install.
get_delivery_options 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 get_delivery_options 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 get_delivery_options. 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.
get_delivery_options is provided by the Mcp Costco MCP server (markswendsen-code/mcp-costco). 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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