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QuantOracle Macro Inflation-Adjusted Return Calculator
x402
QuantOracle Macro Inflation-Adjusted Return Calculator is a paid API for AI agents from api.quantoracle.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Computes year-by-year real vs. nominal value series for an investment given an inflation rate and nominal return, using the Fisher equation
Price / call$0.002
Success—
StatusUnknown
How this service works
QuantOracle: macro/inflation-adjusted
Output
Returns a year-by-year series of nominal and real values, the exact Fisher-equation real return percentage, inflation drag percentage, purchasing power multiplier, and estimated years until purchasing power halves.
Example use cases
Example prompt
“I invested $10,000 and expect a nominal return of 8% per year with inflation running at 3.5% — can you show me the real vs nominal value each year for the next 10 years, including how much purchasing power I'm losing and what my actual inflation-adjusted return is?”
Technical details
Endpoint
POSThttps://api.quantoracle.dev/v1/macro/inflation-adjustedWhen to prefer
Use this endpoint when you need a rigorous, Fisher-equation-based decomposition of nominal returns into real returns and inflation drag, with a full year-by-year value series. Prefer over simple CPI deflators when you want purchasing-power-halving estimates and exact vs approximate real return comparisons in a single call.
Side effects
- Missing required fields (initial_value, nominal_return_pct, inflation_rate_pct, periods) returns 400 validation error
- Negative periods or zero initial_value may return 422 unprocessable entity
- Extremely high inflation or return rates may produce unstable series
- Payment not included or insufficient USDC balance returns 402 payment required
Input
{
"input": {
"body": {
"periods": 10,
"initial_value": 10000,
"inflation_rate_pct": 3.5,
"nominal_return_pct": 8
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| periods | — | Optional number of periods for cumulative calculation |
| initial_value | — | Optional initial value for cumulative calculation |
| inflation_rate_pct | number | Inflation rate as percentage |
| nominal_return_pct | number | Nominal return as percentage |
Output
{
"ms": 121.23,
"_meta": {
"url": "https://quantoracle.dev",
"docs": "https://api.quantoracle.dev/docs",
"powered_by": "QuantOracle"
},
"value_series": [
{
"real": 10000,
"year": 0,
"nominal": 10000
},
{
"real": 10434.78,
"year": 1,
"nominal": 10800
},
{
"real": 10888.47,
"year": 2,
"nominal": 11664
},
{
"real": 11361.88,
"year": 3,
"nominal": 12597.12
},
{
"real": 11855.88,
"year": 4,
"nominal": 13604.89
},
{
"real": 12371.35,
"year": 5,
"nominal": 14693.28
},
{
"real": 12909.23,
"year": 6,
"nominal": 15868.74
},
{
"real": 13470.5,
"year": 7,
"nominal": 17138.24
},
{
"real": 14056.18,
"year": 8,
"nominal": 18509.3
},
{
"real": 14667.32,
"year": 9,
"nominal": 19990.05
},
{
"real": 15305.03,
"year": 10,
"nominal": 21589.25
}
],
"real_return_pct": 4.3478,
"inflation_drag_pct": 3.6522,
"approximate_real_return": 4.5,
"fisher_exact_real_return": 0.043478,
"purchasing_power_multiplier": 0.9662,
"years_to_halve_purchasing_power": 20.15
}Tags
x402
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