按分类搜索Mercari商品
AI agents call search_mercari_by_category 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 product information from the Mercari marketplace filtered by category. It has no side effects—it does not create, modify, delete, or execute any operations. It is a straightforward query operation that returns search results. Severity is low because misuse would only expose marketplace data already publicly available through normal browsing.
From the tool's definition Tool performs search operations on Mercari marketplace by category. The description 'search' and context of 'retrieving item details and browsing search results' indicate read-only data retrieval with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
按分类搜索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_by_category: 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_by_category 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_by_category 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_by_category. 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_by_category 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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