calculate_npv · RealVest Real Estate MCP Server MCP

WHAT IT DOES

What calculate_npv does on RealVest Real Estate MCP Server

AI agents call calculate_npv to retrieve information from RealVest Real Estate MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why calculate_npv needs a policy

NPV calculation is a deterministic mathematical operation that takes investment parameters as inputs and returns a computed value. It does not create, modify, delete, or move actual funds; it merely analyzes and returns financial projections. This is analogous to a search or query operation—retrieving analytical results based on input data.

From the tool's definition Tool name 'calculate_npv' and description 'Calculate Net Present Value for real estate investment decisions' indicate a financial calculation/analysis function that retrieves or computes data without modifying, deleting, or executing external operations.

Documented attack patterns abuse exactly the kind of access calculate_npv gives an agent:

POLICY

How to control calculate_npv

PolicyLayer is an MCP gateway — it sits between your AI agents and RealVest Real Estate MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for calculate_npv:

policy.json

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

calculate_npv is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register RealVest Real Estate MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

More RealVest Real Estate MCP Server tools

Execute run_monte_carlo Run Monte Carlo simulation to assess investment risk and return probabilities Read analyze_1031_exchange Analyze 1031 like-kind exchange tax benefits, qualification requirements, and alternative Read analyze_airbnb_str Analyze Airbnb/short-term rental income potential with seasonal variations and risk assess Read analyze_breakeven Calculate breakeven points for occupancy, rent, and ROI for real estate investments Read analyze_brrrr_deal Analyze a BRRRR (Buy, Rehab, Rent, Refinance, Repeat) real estate deal Read analyze_construction_loan Analyze construction loan financing, draw schedules, interest costs, and permanent convers Read analyze_debt_to_income Analyze debt-to-income ratios for mortgage qualification with different loan types Read analyze_fix_flip Analyze profitability of fix and flip real estate investments with detailed cost breakdown

All 33 RealVest Real Estate MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about calculate_npv

What does the calculate_npv tool do? +

Calculate Net Present Value for real estate investment decisions. It is categorised as a Read tool in the RealVest Real Estate MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on calculate_npv? +

Register the RealVest Real Estate MCP Server MCP server in PolicyLayer and add a rule for calculate_npv: 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 RealVest Real Estate MCP Server. Nothing to install.

What risk level is calculate_npv? +

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

Can I rate-limit calculate_npv? +

Yes. Add a rate_limit block to the calculate_npv 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_npv completely? +

Set action: deny in the PolicyLayer policy for calculate_npv. 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_npv? +

calculate_npv is provided by the RealVest Real Estate MCP Server MCP server (sigaihealth/realvestmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every RealVest Real Estate MCP Server tool call.

Start from RealVest Real Estate MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

Free to start. No card required.

33 RealVest Real Estate MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.