Add a product to the Amazon cart using ASIN - You should always ask for confirmation to the user before running this tool
AI agents use add-to-cart to create or update resources in Amazon MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Amazon MCP Server environment.
This tool modifies cart contents (a reversible operation), placing it in the Write category rather than Read (which would be querying) or Destructive (cart additions can be undone via clear-cart). Severity is medium because misuse could result in unwanted items in a user's cart, but the effect is reversible and does not commit a financial transaction by itself.
From the tool's definition Tool name 'add-to-cart' and description 'Add a product to the Amazon cart' indicate creation/modification of shopping cart state.
Documented attack patterns abuse exactly the kind of access add-to-cart gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add-to-cart:
{
"version": "1",
"default": "deny",
"tools": {
"add-to-cart": {
"limits": [
{
"counter": "add-to-cart_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add-to-cart stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Add a product to the Amazon cart using ASIN - You should always ask for confirmation to the user before running this tool. It is categorised as a Write tool in the Amazon MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Amazon MCP Server MCP server in PolicyLayer and add a rule for add-to-cart: 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 Amazon MCP Server. Nothing to install.
add-to-cart is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the add-to-cart 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 add-to-cart. 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.
add-to-cart is provided by the Amazon MCP Server MCP server (rigwild/mcp-server-amazon). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Amazon MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
7 Amazon MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.