# x402-toolbox Loan Amortization Schedule

> x402-toolbox Loan Amortization Schedule is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Generates a deterministic loan amortization schedule (payment breakdown by period) given loan parameters, paid per-call via USDC over x402.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/math/loan-amortization-schedule?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-loan-amortization-schedule-8dff50bd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XWyJjd6ld0ZYJyqeH6swS

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 x402-toolbox-loan-amortization-schedule-8dff50bd
```

Example prompt: Can you generate a full loan amortization schedule for a $250,000 mortgage at a 6.5% annual interest rate over 30 years with monthly payments?

## When to prefer this

Choose this endpoint when you need a deterministic, per-period amortization breakdown for a fixed-rate loan without signing up for a financial API or managing API keys. Ideal for AI agents that need to present loan repayment tables inline, compare loan scenarios, or support financial planning tasks. Prefer over general finance APIs when you want pay-per-call pricing with no credential management.

## Known failure modes

- Missing or invalid loan parameters (principal, rate, term) result in an error response
- Negative or zero interest rate may cause computation errors
- Extremely large loan terms may hit response size limits
- Payment failure via x402 results in 402 response blocking access

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with ok and paid flags, along with a structured amortization schedule array where each entry represents a payment period and includes the payment number, payment amount, principal portion, interest portion, and remaining loan balance.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-loan-amortization-schedule-8dff50bd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)