# Simple Interest Amount - Single Calculation

> Simple Interest Amount - Single Calculation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Calculates simple interest for a single record given a principal, annual rate, and time period in years, returning the result with formula, units, and limitations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-simple-interest-calculate?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/simple-interest-amount-single-calculation-ac34c636
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2Alfo5NGolRLP7UiYNcQM

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 simple-interest-amount-single-calculation-ac34c636 -d '<json body>'
```

Example prompt: Can you calculate the simple interest on a $10,000 principal at 5% annual rate over 2 years and show me the formula and units used?

## When to prefer this

Choose this endpoint when you need a straightforward, auditable simple interest computation for a single record with the formula and units documented — ideal for financial agents needing a traceable, bounded calculation rather than a full compound interest or amortization model.

## Known failure modes

- Missing required fields (principal, annual_rate_percent, or years) returns a validation error
- Values outside allowed bounds (e.g. years > 100, principal > 1 trillion, rate < -99 or > 100) are rejected
- Payment failure or insufficient USDC balance prevents the calculation from running
- Malformed JSON body returns a parse error

## How this service works

Simple interest amount - Single calculation: Calculate one supplied record with the formula and units. Metric: Simple interest amount. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded single calculation report.

## Output

A JSON response containing the computed simple interest amount for the supplied principal, annual rate, and years, along with the formula applied, the units used, and any applicable limitations of the calculation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "object",
   "default": {
    "years": 2,
    "principal": 10000,
    "annual_rate_percent": 5
   },
   "required": [
    "principal",
    "annual_rate_percent",
    "years"
   ],
   "properties": {
    "years": {
     "type": "number",
     "default": 2,
     "maximum": 100,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period"
    },
    "principal": {
     "type": "number",
     "default": 10000,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period"
    },
    "annual_rate_percent": {
     "type": "number",
     "default": 5,
     "maximum": 100,
     "minimum": -99,
     "description": "Percent units: enter 5 for 5%, not 0.05"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/simple-interest-amount-single-calculation-ac34c636/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)