# Checkout Payment Failure Share — Rolling Mean Report

> Checkout Payment Failure Share — 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 2026-10-15).

Computes a rolling mean of the payment failure share (failed_attempts / payment_attempts) over a sliding window across up to 200 retail checkout data rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-checkout-payment-failure-rolling?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/checkout-payment-failure-share-rolling-mean-report-e8d7141f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R4aHYGlO-qiWgfLzpRiLx

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 checkout-payment-failure-share-rolling-mean-report-e8d7141f -d '<json body>'
```

Example prompt: Can you run a rolling mean report on my checkout payment failure data — I have 4 rows of payment attempts and failed attempts, and I want a rolling window of 2?

## When to prefer this

Choose this endpoint when you need a rolling/moving average of the checkout payment failure share from retail data over a sliding window, specifically for smoothing time-series failure rate data across sequential periods. Prefer this over raw aggregation when you want to reduce noise and identify trends in payment failure rates without platform access or live transaction data.

## Known failure modes

- Fewer than 2 rows supplied — minimum minItems:2 required
- Window size larger than number of rows — may produce empty or partial results
- payment_attempts must be greater than 0 (exclusiveMinimum)
- failed_attempts exceeds payment_attempts — logically invalid but may still process
- More than 200 rows submitted — rejected due to maxItems constraint
- Non-numeric values in rows — schema validation failure

## How this service works

Checkout payment failure share - Rolling mean report: Rolling mean report for Checkout payment failure share. Supplied retail figures only, up to 200 records. No platform access, live rates or order execution. One of 25 new profiles across 20 shared operations in this industry. 0.01 USDC includes one bounded rolling mean report report.

## Output

Returns a rolling mean report of the checkout payment failure share (ratio of failed_attempts to payment_attempts), smoothed over the specified window size, covering up to 200 input rows. The output reflects retail figures only with no live rates, platform access, or order execution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "payment_attempts",
     "failed_attempts"
    ],
    "properties": {
     "failed_attempts": {
      "type": "number",
      "default": 4,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "payment_attempts": {
      "type": "number",
      "default": 100,
      "maximum": 1000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "failed_attempts": 4,
     "payment_attempts": 100
    },
    {
     "failed_attempts": 4.4,
     "payment_attempts": 110.00000000000001
    },
    {
     "failed_attempts": 4,
     "payment_attempts": 100
    },
    {
     "failed_attempts": 4.4,
     "payment_attempts": 110.00000000000001
    }
   ],
   "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/checkout-payment-failure-share-rolling-mean-report-e8d7141f/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)