fitness_calc
Body and training calculator in one call, metric or imperial: BMI with WHO category and healthy-weight range, BMR (Mifflin-St Jeor, revised Harris-Benedict, Katch-McArdle), TDEE by activity level, calorie target and protein / fat / carb grams for lose / maintain / gain, US Navy body-fat %, ideal ...
This record as markdown: /tools/com-it-scorptech-x402/fitness-calc.md
What fitness_calc does on ScorpTech x402 API
AI agents call fitness_calc to retrieve information from ScorpTech x402 API 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 |
|---|---|---|---|
age | integer | — | |
hip | number | — | |
sex | string | — | |
goal | string | — | |
neck | number | — | |
reps | integer | — | |
time | string | — | Run time h:mm:ss or mm:ss |
units | string | — | metric = kg / cm, imperial = lb / in |
waist | number | — | |
height | number | — | |
weight | number | — | |
bodyFat | number | — | Known body-fat % (enables Katch-McArdle) |
Parameters from the server's own tool schema.
Why fitness_calc is rated Low
Even though fitness_calc only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Risk signalsHigh parameter count (17 properties)
Attacks that exploit this kind of access
The rule that runs fitness_calc safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ScorpTech x402 API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For fitness_calc, this is the rule to start with:
fitness_calc 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 ScorpTech x402 API, apply this rule, and every fitness_calc call is checked against it from then on.
Questions about fitness_calc
Body and training calculator in one call, metric or imperial: BMI with WHO category and healthy-weight range, BMR (Mifflin-St Jeor, revised Harris-Benedict, Katch-McArdle), TDEE by activity level, calorie target and protein / fat / carb grams for lose / maintain / gain, US Navy body-fat %, ideal weight (Devine, Robinson, Miller, Hamwi), max heart rate and 5 training zones (Karvonen when resting HR is given), daily water, one-rep max (Epley, Brzycki, Lombardi, O'Conner) and running pace / speed with Riegel race-time predictions. Informational, not medical advice. Price: $0.001 USDC per successful call (x402, Solana). Same tool over HTTPS: GET https://scorptech.it.com/api/x402/v1/fitness-calc. It is categorised as a Read tool in the ScorpTech x402 API MCP Server, which means it retrieves data without modifying state.
fitness_calc accepts 12 parameters: age, hip, sex, goal, neck, reps, time, units, waist, height, weight, bodyFat. The full parameter table on this page comes from the server's own tool schema.
Register the ScorpTech x402 API MCP server in PolicyLayer and add a rule for fitness_calc: 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 ScorpTech x402 API. Nothing to install.
fitness_calc 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 fitness_calc 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 fitness_calc. 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.
fitness_calc is provided by the ScorpTech x402 API MCP server (https://scorptech.it.com/api/x402/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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