搜索Mercari商品
AI agents call search_mercari_items 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 performs a search operation to retrieve product information from the Mercari marketplace. It has no capability to modify, delete, execute code, or affect financial transactions. The operation is read-only and returns search results based on user-provided criteria (keywords, categories, filters). This is a standard data retrieval function with no destructive potential or side effects.
From the tool's definition Tool description states it searches Mercari products ('搜索Mercari商品' = 'Search Mercari products'). Server description confirms it 'enables users to search for products on the Mercari marketplace using keywords, categories, and specific filters' and 'retrieving…
Attacks that exploit this kind of access
搜索Mercari商品. 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 search_mercari_items: 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.
search_mercari_items 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 search_mercari_items 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 search_mercari_items. 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.
search_mercari_items 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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