# Coupon Redemption Share - Local Finite-Change Elasticity

> Coupon Redemption Share - Local Finite-Change Elasticity 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 the local finite-change elasticity of coupon redemption share given a retail baseline and a percentage step, returning a bounded sensitivity report.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-coupon-redemption-elasticity?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/coupon-redemption-share-local-finite-change-elasticity-28f5d4e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cRY-6GF8GXkVrP6-Zar8N

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 coupon-redemption-share-local-finite-change-elasticity-28f5d4e4 -d '<json body>'
```

Example prompt: Calculate the local finite-change elasticity of coupon redemption share for a baseline of 100 issued coupons and 15 redeemed coupons, using a 1% step on the issued_coupons field.

## When to prefer this

Use this endpoint when you need a quick, inexpensive ($0.01 USDC) point estimate of how sensitive coupon redemption share is to a small finite change in either issued or redeemed coupons, given your own supplied retail baseline figures. It is best suited for offline sensitivity analysis on known data rather than live platform data, order execution, or real-time rate lookups.

## Known failure modes

- Invalid baseline values (e.g. redeemed_coupons exceeding issued_coupons in a way that violates domain logic)
- step_percent outside the allowed range of 0.01–10 causes validation error
- issued_coupons set to 0 (exclusiveMinimum) triggers schema rejection
- Missing required baseline fields returns input validation error
- Payment failure via x402 protocol results in no report being returned

## How this service works

Coupon redemption share - Local finite-change elasticity: Local finite-change elasticity for Coupon redemption 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 local finite-change elasticity report.

## Output

A bounded local finite-change elasticity report for coupon redemption share, indicating how the ratio of redeemed to issued coupons changes in response to a specified percentage step in the chosen field, based on the supplied retail baseline figures (up to 200 records).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "field": {
   "enum": [
    "issued_coupons",
    "redeemed_coupons"
   ],
   "type": "string",
   "default": "issued_coupons"
  },
  "baseline": {
   "type": "object",
   "default": {
    "issued_coupons": 100,
    "redeemed_coupons": 15
   },
   "required": [
    "issued_coupons",
    "redeemed_coupons"
   ],
   "properties": {
    "issued_coupons": {
     "type": "number",
     "default": 100,
     "maximum": 1000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    },
    "redeemed_coupons": {
     "type": "number",
     "default": 15,
     "maximum": 1000000000000,
     "minimum": 0
    }
   },
   "additionalProperties": false
  },
  "step_percent": {
   "type": "number",
   "default": 1,
   "maximum": 10,
   "minimum": 0.01
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coupon-redemption-share-local-finite-change-elasticity-28f5d4e4/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)