获取Mercari商品详情
AI agents call get_mercari_item_detail to retrieve information from Mercari MCP Server 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 product details from the Mercari marketplace without creating, modifying, deleting, or executing any operations. It is a pure read operation with no side effects, matching the Read category definition.
From the tool's definition Tool name 'get_mercari_item_detail' and description '获取Mercari商品详情' (Get Mercari item details) indicate retrieval of product information.
Attacks that exploit this kind of access
获取Mercari商品详情. It is categorised as a Read tool in the Mercari MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Mercari MCP Server MCP server in PolicyLayer and add a rule for get_mercari_item_detail: 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 Mercari MCP Server. Nothing to install.
get_mercari_item_detail 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_mercari_item_detail 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_mercari_item_detail. 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_mercari_item_detail is provided by the Mercari MCP Server MCP server (purebaba/mercari-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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