Get delivery time and fee. Use to pick cheapest/fastest if user asks.
AI agents call check_delivery_estimate to retrieve information from MCP A2A AP2 Food Delivery & Payments without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries delivery logistics data (time and fee estimates) from food delivery services. It has no capability to modify data, execute transactions, delete records, or move money. While the server handles financial operations via sibling tools like 'process_payment' and 'process_refund', this specific tool is purely informational.
From the tool's definition Tool name 'check_delivery_estimate' and description 'Get delivery time and fee' indicate retrieval of information with no side effects. The phrase 'Use to pick cheapest/fastest' shows it provides data for decision-making, not execution of orders or payments.
Attacks that exploit this kind of access
Get delivery time and fee. Use to pick cheapest/fastest if user asks. It is categorised as a Read tool in the MCP A2A AP2 Food Delivery & Payments MCP Server, which means it retrieves data without modifying state.
Register the MCP A2A AP2 Food Delivery & Payments MCP server in PolicyLayer and add a rule for check_delivery_estimate: 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 A2A AP2 Food Delivery & Payments. Nothing to install.
check_delivery_estimate 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 check_delivery_estimate 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 check_delivery_estimate. 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.
check_delivery_estimate is provided by the MCP A2A AP2 Food Delivery & Payments MCP server (tas1337/mcp-a2a-ap2-im-hungry). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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