# Checkout Payment Failure Share - Adjacent Period Changes

> Checkout Payment Failure Share - Adjacent Period Changes is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Computes adjacent period changes in checkout payment failure share from retail payment attempt data, returning up to 200 records.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-checkout-payment-failure-period-changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/checkout-payment-failure-share-adjacent-period-changes-c928c25d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uzxhOj4QHO--cm45wqOJu

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-adjacent-period-changes-c928c25d -d '<json body>'
```

Example prompt: Can you calculate the adjacent period changes in checkout payment failure share for my retail data? I have two periods: period 1 had 100 payment attempts with 4 failures, and period 2 had 110 payment attempts with 4.4 failures.

## When to prefer this

Use this endpoint when you need a quick, bounded computation of period-over-period changes in checkout payment failure share from your own retail data. It is ideal for agents that have already collected payment attempt counts and failure counts across adjacent time windows and need the delta computed without requiring platform access, live rates, or order execution. It is not suitable for real-time payment monitoring or for datasets exceeding 200 period records.

## Known failure modes

- Fewer than 2 rows supplied — minItems violation returns validation error
- payment_attempts is zero or missing — exclusiveMinimum violation
- failed_attempts exceeds payment_attempts logically (though schema doesn't enforce this)
- More than 200 rows supplied — maxItems violation
- Non-numeric values in payment_attempts or failed_attempts fields
- Payment failure (x402) if USDC balance is insufficient

## How this service works

Checkout payment failure share - Adjacent period changes: Adjacent period changes 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 adjacent period changes report.

## Output

Returns a bounded report of adjacent period changes in checkout payment failure share, showing how the ratio of failed payment attempts to total payment attempts shifted between consecutive periods. Covers up to 200 records of supplied retail figures, with no live rates or order execution included.

## 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
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/checkout-payment-failure-share-adjacent-period-changes-c928c25d/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)