# Fixed-Rate Periodic Loan Payment Rolling Mean Report

> Fixed-Rate Periodic Loan Payment Rolling Mean Report is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Calculates trailing full-window rolling means over a series of fixed-rate periodic loan payment observations, returning results with formula, units, and limitations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-loan-payment-rolling?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fixed-rate-periodic-loan-payment-rolling-mean-report-634263fb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6-mOmHzzUPhcgISaUDq_V

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 fixed-rate-periodic-loan-payment-rolling-mean-report-634263fb -d '<json body>'
```

Example prompt: Can you run a rolling mean report on these 4 loan scenarios using a window of 2: a $10,000 loan at 6% with 12 payments per year over 36 payments, an $11,000 loan at 6.6% with 13 payments per year over 40 payments, and then those two again — I want to see the trailing average loan payment smoothed across the series.

## When to prefer this

Choose this endpoint when you need to smooth a time-ordered series of fixed-rate periodic loan payment values using a trailing full-window rolling mean, especially when preserving gaps for invalid rows is important. It is purpose-built for loan payment metric analysis rather than general statistical rolling windows, and returns structured JSON with formula and units — ideal for financial reporting workflows that need audit-friendly output.

## Known failure modes

- Fewer than 2 rows provided — minimum row count not met
- Window size exceeds number of rows — no full windows can be computed
- Missing required fields (principal, annual_nominal_rate_percent, payments_per_year, number_of_payments) in any row
- Annual rate outside 0–100 range or principal exceeds 1 trillion — validation error
- More than 200 rows submitted — exceeds maximum input size
- Payment count fails (e.g. number_of_payments > 36500) — out-of-range error

## How this service works

Fixed-rate periodic loan payment - Rolling mean report: Calculate trailing full-window means over ordered observations, preserving invalid-row gaps. Metric: Fixed-rate periodic loan payment. 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 rolling mean report report.

## Output

A JSON object containing the rolling mean values computed over the ordered loan payment observations using the specified window size, along with the mathematical formula applied, the units of the output, and any limitations or invalid-row gaps preserved in the result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "principal",
     "annual_nominal_rate_percent",
     "payments_per_year",
     "number_of_payments"
    ],
    "properties": {
     "principal": {
      "type": "number",
      "default": 10000,
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Amount in a consistent supplied currency and reporting period"
     },
     "payments_per_year": {
      "type": "integer",
      "default": 12,
      "maximum": 365,
      "minimum": 1
     },
     "number_of_payments": {
      "type": "integer",
      "default": 36,
      "maximum": 36500,
      "minimum": 1
     },
     "annual_nominal_rate_percent": {
      "type": "number",
      "default": 6,
      "maximum": 100,
      "minimum": 0,
      "description": "Percent units: enter 5 for 5%, not 0.05"
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "principal": 10000,
     "payments_per_year": 12,
     "number_of_payments": 36,
     "annual_nominal_rate_percent": 6
    },
    {
     "principal": 11000,
     "payments_per_year": 13,
     "number_of_payments": 40,
     "annual_nominal_rate_percent": 6.6000000000000005
    },
    {
     "principal": 10000,
     "payments_per_year": 12,
     "number_of_payments": 36,
     "annual_nominal_rate_percent": 6
    },
    {
     "principal": 11000,
     "payments_per_year": 13,
     "number_of_payments": 40,
     "annual_nominal_rate_percent": 6.6000000000000005
    }
   ],
   "maxItems": 200,
   "minItems": 2
  },
  "window": {
   "type": "integer",
   "default": 2,
   "maximum": 200,
   "minimum": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fixed-rate-periodic-loan-payment-rolling-mean-report-634263fb/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)