bmi
Body Mass Index (BMI) — BMI from weight and height, the WHO weight category, and the healthy-weight range for your height. Metric (kg/cm) or imperial (lb/in).
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/bmi.md
What bmi does on Gateway
AI agents call bmi 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 |
|---|---|---|---|
unit | string | — | 'metric' (kg/cm) or 'imperial' (lb/in); default metric |
height | number | Yes | Height (cm if metric, inches if imperial) |
weight | number | Yes | Body weight (kg if metric, lb if imperial) |
Parameters from the server's own tool schema.
Why bmi is rated Low
BMI is a straightforward health metric calculator that retrieves or derives information from provided inputs without creating, modifying, or deleting any data. It performs a deterministic mathematical computation and returns the result. This is purely informational/read-only activity with minimal security risk.
From the tool's definition Tool computes BMI from weight and height inputs and returns calculated values (BMI, WHO category, healthy-weight range). No data modification, deletion, code execution, or financial operations. Pure calculation with no side effects.
Attacks that exploit this kind of access
The rule that runs bmi 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 bmi, this is the rule to start with:
bmi 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 bmi call is checked against it from then on.
Questions about bmi
Body Mass Index (BMI) — BMI from weight and height, the WHO weight category, and the healthy-weight range for your height. Metric (kg/cm) or imperial (lb/in). It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
bmi accepts 3 parameters: unit, height, weight. Required: height, weight. 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 bmi: 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.
bmi 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 bmi 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 bmi. 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.
bmi 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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