# Sindri Keeping Up With Inflation Calculator

> Sindri Keeping Up With Inflation Calculator is a paid API for AI agents from ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Computes the pre-tax raise needed to maintain either the same dollar savings amount or the same savings rate after inflation increases spending, accounting for marginal tax on the raise.

## Facts

- Endpoint: POST https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/keepingUpWithInflationCalculator?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sindri-keeping-up-with-inflation-calculator-accaa540
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E_uuV1ENmZj5Ngy58QFd6

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sindri-keeping-up-with-inflation-calculator-accaa540 -d '<json body>'
```

Example prompt: I make $5,800 take-home per month, spend about $4,200 a month, and my marginal tax rate is 24%. With 4% inflation this year, how big a pre-tax raise do I need to keep saving the same dollar amount and also to keep the same savings rate?

## When to prefer this

Use this endpoint when a user wants a precise, tax-aware calculation of the raise they need to offset inflation — specifically when they care about two distinct scenarios (same dollars saved vs. same savings rate). Prefer this over generic inflation calculators when the marginal tax rate on the raise is an important consideration, since gross raises shrink significantly after taxes.

## Known failure modes

- Missing required fields (monthlySpending, monthlyTakeHomePay, marginalTaxRate) returns a validation error
- marginalTaxRate >= 1 or < 0 returns an invalid input error
- Negative or zero spending/income values may produce nonsensical results
- annualInflationRate of 0 returns a trivially zero raise requirement
- Network or Lambda cold-start timeout on rare occasions

## How this service works

Keeping up with inflation calculator. Computes the pre-tax raise needed under two scenarios — keeping the same dollar amount saved, or maintaining the same savings rate — after inflation raises your spending and a marginal tax rate reduces the raise itself.

## Output

Returns two calculated pre-tax raise amounts: one representing the raise needed to keep the same absolute dollar amount saved each month after inflation, and one representing the raise needed to maintain the same savings rate — both accounting for the marginal tax rate reducing the effective value of the raise.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "marginalTaxRate": {
   "type": "number",
   "description": "Marginal tax rate applied to additional income, as a fraction (0 to <1)."
  },
  "monthlySpending": {
   "type": "number",
   "description": "Current monthly spending, before inflation."
  },
  "monthlyTakeHomePay": {
   "type": "number",
   "description": "Current monthly take-home pay, before the raise."
  },
  "annualInflationRate": {
   "type": "number",
   "default": 0.03,
   "description": "Personal annual inflation rate, as a fraction. Default 0.03."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sindri-keeping-up-with-inflation-calculator-accaa540/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws](https://www.zero.xyz/host/ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/llms.txt)