Search for merchants by name or category
AI agents call search_merchants to retrieve information from OSU 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 merchant information based on search criteria. It has no side effects—it does not create, modify, delete, or execute any operations. It is a straightforward read-only query of merchant data, consistent with other informational tools on the OSU MCP Server like 'get_buildings' and 'get_athletics_all'.
From the tool's definition Tool name 'search_merchants' and description 'Search for merchants by name or category' indicate a query/retrieval operation with no modification or execution of code.
Attacks that exploit this kind of access
Search for merchants by name or category. It is categorised as a Read tool in the OSU MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OSU MCP Server MCP server in PolicyLayer and add a rule for search_merchants: 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 OSU MCP Server. Nothing to install.
search_merchants 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_merchants 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_merchants. 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_merchants is provided by the OSU MCP Server MCP server (sichengchen/ohio-state-mcp-server). 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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