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finmath NPV Calculator
x402
finmath NPV Calculator is a paid API for AI agents from finmath.qzqh5rrbkz.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Computes the Net Present Value (NPV) of a series of cash flows at a given discount rate using exact arithmetic
Price / call$0.001
Success—
StatusUnknown
How this service works
Deterministic finance and crypto math for AI agents: TradFi (NPV, IRR, XIRR, Black-Scholes + Greeks, bonds, VaR, Sharpe) and DeFi (impermanent loss, perp liquidation, funding, Uniswap v3, health factor, cost basis). Exact, model-free arithmetic that LLMs get wrong — priced per call in USDC.
Output
Returns a JSON object with a 'result' field containing the computed NPV value and a 'meta' field with computation metadata such as timing or model details.
Example use cases
Example prompt
“Calculate the NPV of an investment with a 10% annual discount rate and the following cash flows: year 0 is -50000, year 1 is 15000, year 2 is 20000, year 3 is 25000, and year 4 is 20000.”
Technical details
Endpoint
POSThttps://finmath.qzqh5rrbkz.workers.dev/v1/npvWhen to prefer
Use this endpoint when you need exact, deterministic NPV calculations that LLMs tend to get wrong due to floating-point approximations. Prefer over LLM-native math when precision matters for investment decisions, financial modeling, or auditable results. Best for agents doing capital budgeting, project valuation, or loan analysis.
Side effects
- Missing required 'rate' field returns a 400-level error
- Missing or empty 'cashflows' array returns a 400-level error
- Non-numeric values in cashflows array may cause a validation error
- Payment failure (insufficient USDC balance) blocks execution with 402 response
Input
{
"rate": 0.1,
"cashflows": [
-50000,
15000,
20000,
25000,
20000
]
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| raterequired | number | rate |
| cashflowsrequired | array | cashflows |
Output
{
"meta": {
"tool": "npv",
"disclaimer": "Deterministic calculation utility. Not financial, investment, or trading advice.",
"deterministic": true
},
"result": 12608.428386039188
}Schema · Response
| Field | Type | Description |
|---|---|---|
| metarequired | object | |
| resultrequired | — |
Tags
x402
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