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finmath IRR Calculator
x402
finmath IRR 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 Internal Rate of Return (IRR) for a series of cash flows with deterministic, 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 the computed IRR as a numeric result (the periodic rate of return that makes the net present value of the cash flows equal to zero), along with metadata about the computation such as convergence status and iteration details.
Example use cases
Example prompt
“What's the IRR on a deal where I put in -$100,000 upfront and then receive $20,000, $35,000, $40,000, and $50,000 over the next four years?”
Technical details
Endpoint
POSThttps://finmath.qzqh5rrbkz.workers.dev/v1/irrWhen to prefer
Choose this endpoint when you need a deterministic, exact IRR calculation that LLMs and spreadsheet approximations may get wrong — especially for investment analysis, capital budgeting, private equity, or any scenario involving irregular periodic cash flows where precision matters. Prefer over LLM-computed math when auditability and exactness are required.
Side effects
- Cash flows with no sign change may return no real IRR solution (non-convergence)
- Empty or single-element cashflows array may return an error
- All-positive or all-negative cash flows have no IRR solution
- Numerical convergence failure if cash flows are extreme or degenerate
- Missing required cashflows field returns validation error
Input
{
"cashflows": [
-1000,
300,
300,
300,
300
]
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| cashflowsrequired | array | cashflows |
Output
{
"meta": {
"tool": "irr",
"disclaimer": "Deterministic calculation utility. Not financial, investment, or trading advice.",
"deterministic": true
},
"result": 0.0771384729520836
}Schema · Response
| Field | Type | Description |
|---|---|---|
| metarequired | object | |
| resultrequired | — |
Tags
x402
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