Search for items by field value.
AI agents call search_items to retrieve information from FastAPI MCP Template without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation. It retrieves items matching specified criteria but does not create, modify, delete, or execute code. The lack of any side effects (no modifications, deletions, or external execution) and the explicit search functionality classify this as a Read operation with low severity and high confidence.
From the tool's definition Tool name is 'search_items' and description states it will 'Search for items by field value.' The verb 'search' combined with 'by field value' indicates a query operation that retrieves data without modification.
Attacks that exploit this kind of access
Search for items by field value. It is categorised as a Read tool in the FastAPI MCP Template MCP Server, which means it retrieves data without modifying state.
Register the FastAPI MCP Template MCP server in PolicyLayer and add a rule for search_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 FastAPI MCP Template. Nothing to install.
search_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_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_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_items is provided by the FastAPI MCP Template MCP server (joonheeu/fastapi-mcp-server-template). 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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