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Agent402 UK IRR Calculator (Newton-Raphson)
x402
Agent402 UK IRR Calculator (Newton-Raphson) is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.002/call, status down (last checked 2026-10-12).
Computes the Internal Rate of Return for a cashflow series using the Newton-Raphson iterative method, returning IRR and convergence status.
Price / call$0.002
Success—
StatusDown
How this service works
Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.
Output
Returns a JSON object containing 'irr' (the computed internal rate of return as a decimal, e.g. 0.228901) and 'converged' (a boolean indicating whether the Newton-Raphson algorithm successfully converged to a solution).
Example use cases
Private equity deal IRR check
“I need the precise IRR for this private equity deal — cashflows are [-500000, 80000, 120000, 150000, 200000, 250000]. Use an initial guess of 0.1 and give me the converged result.”
Real estate investment return analysis
“What's the internal rate of return on this property investment? The cashflows are [-300000, 15000, 15000, 15000, 15000, 350000]. I need the exact Newton-Raphson result, not an approximation.”
Project feasibility hurdle rate comparison
“Calculate the IRR for a project with cashflows [-200000, 50000, 75000, 90000, 60000] — I want the exact converged value so I can compare it against our 12% hurdle rate.”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/math/irr?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent must compute IRR with mathematical precision rather than relying on LLM approximation or token-based arithmetic. It is the right choice for financial analysis tasks where convergence guarantees matter, when the cashflow series has more than a few periods, or when the result will feed downstream financial decisions requiring accuracy. Prefer over manual agent math whenever exact IRR and a convergence indicator are needed.
Side effects
- Non-convergence when cashflows have no sign change or multiple IRRs exist — converged returns false
- Invalid cashflow array (empty or non-numeric values) — likely 400 error
- Cashflow series where Newton-Raphson diverges — may return unconverged result or error
- Payment failure via x402 protocol — 402 response before computation occurs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| guess | number | Initial guess (default 0.1) |
| cashflows | array | Cashflows by period |
Output
Schema · Response
{
"type": "json",
"example": {
"irr": 0.228901,
"converged": true
}
}Tags
x402
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