calculate_fund_returns

Compute REAL returns for a lump-sum mutual fund investment using live NAV history.

SERVERNitrostack SOURCEnitrocloudofficial/nitrostack

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/nitrostack/calculate-fund-returns.md

WHAT IT DOES

What calculate_fund_returns does on Nitrostack

AI agents call calculate_fund_returns to retrieve information from Nitrostack without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why calculate_fund_returns is rated Low

Tool reads and calculates investment returns from NAV data without modifying or transacting.

From the tool's definition Compute REAL returns... using live NAV history

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs calculate_fund_returns safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Nitrostack, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For calculate_fund_returns, this is the rule to start with:

calculate_fund_returns Allowed

calculate_fund_returns is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "calculate_fund_returns": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Nitrostack, apply this rule, and every calculate_fund_returns call is checked against it from then on.

FAQ

Questions about calculate_fund_returns

What does the calculate_fund_returns tool do? +

Compute REAL returns for a lump-sum mutual fund investment using live NAV history. It is categorised as a Read tool in the Nitrostack MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on calculate_fund_returns? +

Register the Nitrostack MCP server in PolicyLayer and add a rule for calculate_fund_returns: 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 Nitrostack. Nothing to install.

What risk level is calculate_fund_returns? +

calculate_fund_returns is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit calculate_fund_returns? +

Yes. Add a rate_limit block to the calculate_fund_returns 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.

How do I block calculate_fund_returns completely? +

Set action: deny in the PolicyLayer policy for calculate_fund_returns. 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.

What MCP server provides calculate_fund_returns? +

calculate_fund_returns is provided by the Nitrostack MCP server (nitrocloudofficial/nitrostack). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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