AI agents call calculate_bmi to retrieve information from Awesome-MCP-Scaffold without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
BMI calculation is a stateless mathematical operation that retrieves no data from storage, modifies nothing, executes no code or commands, and produces no destructive or financial effects. It fits the 'Read' category as a harmless computation utility, though it performs no actual data retrieval—the low severity reflects that misuse of this tool poses minimal security or operational risk.
From the tool's definition Tool named 'calculate_bmi' with description 'Calculate Body Mass Index'. This is a pure computational function that takes input parameters (height, weight) and returns a calculated value with no side effects, data modifications, or external operations.
Documented attack patterns abuse exactly the kind of access calculate_bmi gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Awesome-MCP-Scaffold, and nothing reaches the server without passing your rules. This is the rule we recommend for calculate_bmi:
{
"version": "1",
"default": "deny",
"tools": {
"calculate_bmi": {}
}
}calculate_bmi is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Calculate Body Mass Index. It is categorised as a Read tool in the Awesome-MCP-Scaffold MCP Server, which means it retrieves data without modifying state.
Register the Awesome-MCP-Scaffold MCP server in PolicyLayer and add a rule for calculate_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 Awesome-MCP-Scaffold. Nothing to install.
calculate_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 calculate_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 calculate_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.
calculate_bmi is provided by the Awesome-MCP-Scaffold MCP server (ww-ai-lab/awesome-mcp-scaffold). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Awesome-MCP-Scaffold, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
24 Awesome-MCP-Scaffold tools catalogued and risk-classified — across an index of 43,000+ MCP servers.