fertilizer
Fertilizer Calculator — Pounds of fertilizer product to deliver a target nitrogen rate over an area, from the bag's N percentage (first N-P-K number), with a rate-options table.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/fertilizer.md
What fertilizer does on Gateway
AI agents call fertilizer to retrieve information from Gateway without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
area_sqft | number | Yes | Area in square feet |
n_percent | number | Yes | Nitrogen percent in the bag, e.g. 24 for 24-0-4 |
n_rate_lb_per_1000 | number | — | Target nitrogen, lb per 1,000 sq ft (default 1.0) |
Parameters from the server's own tool schema.
Why fertilizer is rated Low
This is a calculator that takes inputs (nitrogen rate, area, bag N percentage) and returns computed results (pounds needed, rate options table). It retrieves or computes data with no side effects—it neither modifies external state, executes arbitrary operations, deletes data, nor commits financial transactions.
From the tool's definition Tool name: 'fertilizer'. Description: 'Fertilizer Calculator — Pounds of fertilizer product to deliver a target nitrogen rate over an area, from the bag's N percentage (first N-P-K number), with a rate-options table.' The tool performs a calculation and…
Attacks that exploit this kind of access
The rule that runs fertilizer safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Gateway, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For fertilizer, this is the rule to start with:
fertilizer is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Gateway, apply this rule, and every fertilizer call is checked against it from then on.
Questions about fertilizer
Fertilizer Calculator — Pounds of fertilizer product to deliver a target nitrogen rate over an area, from the bag's N percentage (first N-P-K number), with a rate-options table. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
fertilizer accepts 3 parameters: area_sqft, n_percent, n_rate_lb_per_1000. Required: area_sqft, n_percent. The full parameter table on this page comes from the server's own tool schema.
Register the Gateway MCP server in PolicyLayer and add a rule for fertilizer: 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 Gateway. Nothing to install.
fertilizer 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 fertilizer 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 fertilizer. 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.
fertilizer is provided by the Gateway MCP server (https://wingmanprotocol.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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