# OmniAPI Compound Interest Calculator

> OmniAPI Compound Interest Calculator is a paid API for AI agents from omni-api-cyan.vercel.app, paid per call via x402, $0.125661/call, status unknown (last checked 2026-09-15).

Calculates compound interest based on provided financial parameters such as principal, rate, and time period

## Facts

- Endpoint: POST https://omni-api-cyan.vercel.app/api/finance/compound/calc
- Price: $0.125661/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/omniapi-compound-interest-calculator-b5f77902
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CnqAs0iEPpWD525YHYV6i

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 omniapi-compound-interest-calculator-b5f77902 -d '<json body>'
```

Example prompt: Can you calculate compound interest on a $15,000 principal at 6.5% annual interest rate compounded monthly over 5 years?

## When to prefer this

Use this endpoint when you need a quick, on-demand compound interest computation without running your own financial calculation logic. It is suitable for agents handling personal finance queries, investment planning tools, or educational financial tools that need reliable compound interest math on a pay-per-call basis. Prefer it over building custom formulas when you want a hosted, maintained calculation service.

## Known failure modes

- Missing required query parameter returns validation error
- Invalid or non-numeric financial values cause computation failure
- Negative interest rate or time period may return an error or unexpected result
- Payment failure via x402 protocol results in 402 status and no data returned
- Malformed request body returns 400 bad request

## How this service works

444 endpoints across 9+ chains. Crypto, AI, Social, Finance, Weather, Tools. Pay per call in USDC via x402 with 4 facilitators: Dexter, Meridian, FluxA, GoPlausible.

## Output

Returns computed compound interest figures including the total interest earned, final balance, and possibly a breakdown of growth over the specified time period, delivered as a structured JSON response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "input": {
   "type": "string",
   "description": "Input data for the endpoint"
  },
  "query": {
   "type": "string",
   "description": "Search query or input text"
  },
  "params": {
   "type": "object",
   "description": "Additional parameters"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/omniapi-compound-interest-calculator-b5f77902/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from omni-api-cyan.vercel.app](https://www.zero.xyz/host/omni-api-cyan.vercel.app/llms.txt)