# Checkout Payment Failure Share – IQR Outlier Flags

> Checkout Payment Failure Share – IQR Outlier Flags is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Detects IQR-based statistical outliers in checkout payment failure share ratios across a batch of retail transaction records.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-checkout-payment-failure-outliers?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/checkout-payment-failure-share-iqr-outlier-flags-14e10654
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UlZtERGhngAew3oZHehji

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-iqr-outlier-flags-14e10654 -d '<json body>'
```

Example prompt: I have a batch of retail store records — can you run IQR outlier detection on the checkout payment failure share? Here are the rows: store A had 4 failures out of 100 attempts, store B had 50 failures out of 110 attempts, store C had 4 failures out of 100 attempts, store D had 45 failures out of 105 attempts.

## When to prefer this

Choose this endpoint when you need fast, batch IQR-based statistical outlier detection specifically on checkout payment failure rate data across retail records. It is purpose-built for retail payment analytics rather than general-purpose statistical tools, accepts up to 200 records per call, and is priced at $0.01 USDC per call making it cost-effective for routine monitoring. Prefer it over generic statistics libraries when you want a simple API call with no infrastructure setup.

## Known failure modes

- Fewer than 2 rows submitted — minimum of 2 rows required
- payment_attempts must be greater than 0 (exclusiveMinimum enforced)
- More than 200 rows submitted — maxItems limit exceeded
- Non-numeric values in failed_attempts or payment_attempts fields
- failed_attempts exceeds payment_attempts (logically invalid ratio, though not schema-enforced)
- Network or payment authorization failure via x402 protocol

## How this service works

Checkout payment failure share - IQR outlier flags: IQR outlier flags 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 iqr outlier flags report.

## Output

Returns IQR-based outlier flags for each submitted row, indicating whether each store or record's payment failure share (failed_attempts / payment_attempts) is a statistical outlier relative to the supplied dataset. Typically includes outlier boolean flags and may include computed IQR bounds or scores per record. Up to 200 records per call.

## 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-iqr-outlier-flags-14e10654/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)