Search for fields by crop type.
AI agents call search_by_crop_type to retrieve information from Farm OS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only tool that queries and retrieves farm data (fields filtered by crop type). It has no side effects, does not modify data, and does not execute code or trigger external operations. The blast radius of misuse is minimal—an AI agent could only retrieve information about fields, not alter farm operations, inventory, or financial records.
From the tool's definition Tool name 'search_by_crop_type' and description 'Search for fields by crop type' indicate a query/search operation that retrieves information about fields matching specified crop types. No modification, deletion, or code execution is involved.
Attacks that exploit this kind of access
Search for fields by crop type. It is categorised as a Read tool in the Farm OS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Farm OS MCP Server MCP server in PolicyLayer and add a rule for search_by_crop_type: 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 Farm OS MCP Server. Nothing to install.
search_by_crop_type 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_by_crop_type 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_by_crop_type. 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_by_crop_type is provided by the Farm OS MCP Server MCP server (ramprasadchauhan/fast-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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