# Sindri HSA Growth Calculator

> Sindri HSA Growth 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 2026-10-12).

Projects year-by-year HSA account balance growth given starting balance, annual contributions, withdrawals for medical expenses, and an expected investment return rate.

## Facts

- Endpoint: POST https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/hsaGrowthCalculator?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sindri-hsa-growth-calculator-9b4dda17
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NrsyEqyvt9vAmyOs1qKV8

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-hsa-growth-calculator-9b4dda17 -d '<json body>'
```

Example prompt: Can you project how my HSA will grow over the next 25 years? I'm starting with $8,000, contributing $4,150 a year including my employer's share, spending about $1,200 a year on medical expenses, and expecting a 7% annual return.

## When to prefer this

Use this endpoint when you need a quick, deterministic HSA-specific compound growth simulation that accounts for both contributions and medical expense withdrawals simultaneously. Prefer this over generic compound interest calculators when the user is explicitly modeling an HSA with dual cash-flow dynamics (in and out). Best for personal finance agents, retirement planning tools, and healthcare cost modeling workflows.

## Known failure modes

- Invalid or out-of-range years value (must be 1–60) returns an error
- Negative values for contributions or balance may cause unexpected results
- annualReturnRate provided as a percentage instead of a fraction (e.g. 7 instead of 0.07) will produce wildly inflated projections
- Missing required fields may return a validation error or null projection

## How this service works

HSA (Health Savings Account) growth calculator. Projects year-by-year account balance from a starting value, annual contributions, annual expense withdrawals, and an annual return rate.

## Output

A year-by-year projection of the HSA account balance over the specified number of years, accounting for the compounding return, annual contributions, and annual expense withdrawals.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "years": {
   "type": "number",
   "description": "Number of years to project (1-60)."
  },
  "startingValue": {
   "type": "number",
   "description": "Current HSA balance."
  },
  "annualExpenses": {
   "type": "number",
   "description": "Annual withdrawals for medical expenses."
  },
  "annualReturnRate": {
   "type": "number",
   "description": "Expected annual investment return, as a fraction."
  },
  "annualContribution": {
   "type": "number",
   "description": "Total annual contribution, including any employer contribution."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sindri-hsa-growth-calculator-9b4dda17/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)