# First-Attempt Delivery Share Before-and-After Comparison

> First-Attempt Delivery Share Before-and-After Comparison is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Computes and compares first-attempt delivery share (rate) between a before and after period using supplied retail shipment figures.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-first-attempt-delivery-compare?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/first-attempt-delivery-share-before-and-after-comparison-cea98542
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kzX-ElS-5QBcBiHsia60I

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 first-attempt-delivery-share-before-and-after-comparison-cea98542 -d '<json body>'
```

Example prompt: Compare my first-attempt delivery share: before the change I had 100 attempted shipments with 87 first-attempt deliveries, and after the change I had 110 attempted shipments with 95.7 first-attempt deliveries — give me a before-and-after comparison report.

## When to prefer this

Choose this endpoint when you need a quick, inexpensive ($0.01 USDC) structured before-and-after comparison of first-attempt delivery share using your own retail shipment figures — no platform login, live rate feeds, or order execution required. Ideal for retail logistics analysts wanting to quantify the impact of a process, route, or carrier change on delivery success rates without needing a full analytics platform.

## Known failure modes

- Missing required fields (attempted_shipments or first_attempt_deliveries in before or after object) returns a validation error
- attempted_shipments value of 0 or negative triggers exclusiveMinimum constraint error
- first_attempt_deliveries exceeding attempted_shipments may produce a rate above 100%, which may be flagged or passed through
- Payment of 0.01 USDC not provided results in 402 Payment Required response
- Values exceeding maximum (1,000,000,000,000) will be rejected by schema validation

## How this service works

First-attempt delivery share - Before and after comparison: Before and after comparison for First-attempt delivery 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 before and after comparison report.

## Output

A bounded before-and-after comparison report showing the first-attempt delivery share (rate) for both the before and after periods, the absolute and/or percentage change between them, derived from the supplied attempted shipments and first-attempt delivery counts. Up to 200 records supported per call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "after": {
   "type": "object",
   "default": {
    "attempted_shipments": 110.00000000000001,
    "first_attempt_deliveries": 95.7
   },
   "required": [
    "attempted_shipments",
    "first_attempt_deliveries"
   ],
   "properties": {
    "attempted_shipments": {
     "type": "number",
     "default": 100,
     "maximum": 1000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    },
    "first_attempt_deliveries": {
     "type": "number",
     "default": 87,
     "maximum": 1000000000000,
     "minimum": 0
    }
   },
   "additionalProperties": false
  },
  "before": {
   "type": "object",
   "default": {
    "attempted_shipments": 100,
    "first_attempt_deliveries": 87
   },
   "required": [
    "attempted_shipments",
    "first_attempt_deliveries"
   ],
   "properties": {
    "attempted_shipments": {
     "type": "number",
     "default": 100,
     "maximum": 1000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    },
    "first_attempt_deliveries": {
     "type": "number",
     "default": 87,
     "maximum": 1000000000000,
     "minimum": 0
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/first-attempt-delivery-share-before-and-after-comparison-cea98542/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)