# DealPulse Cashback Stacking Optimizer

> DealPulse Cashback Stacking Optimizer is a paid API for AI agents from dealpulse-weld.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Maximizes total savings on a purchase by layering portal cashback, credit card rewards, coupons, and loyalty points together

## Facts

- Endpoint: GET https://dealpulse-weld.vercel.app/api/deals/stack
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dealpulse-cashback-stacking-optimizer-4dd478cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ls3VCaAzEkkiFZlXRihXd

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 dealpulse-cashback-stacking-optimizer-4dd478cd
```

Example prompt: Stack all my savings for a $150 purchase at Best Buy — layer the Rakuten portal cashback, my Chase Sapphire card rewards, any active coupon codes, and my Best Buy loyalty points to tell me the best combination and how much I'll save total.

## When to prefer this

Use this endpoint when a user wants to maximize total savings by combining multiple discount mechanisms simultaneously — specifically when portal cashback, card rewards, coupons, and loyalty points all apply to the same purchase. Prefer this over single-method endpoints (coupon finder, card optimizer, or price comparison alone) when the goal is holistic savings stacking rather than finding just one type of deal.

## Known failure modes

- Retailer not supported — no cashback or coupon data available for that store
- Invalid or expired coupon codes passed in the request
- Card type not recognized — cannot compute card rewards
- No stackable deals found — returns empty or minimal savings combination
- Rate limit or payment failure for the $0.1 USDC per call fee

## How this service works

Cashback stacking / maximize savings / stack coupons and rewards at a store. Builds the optimal savings stack by layering shopping-portal cashback (Rakuten, etc.), credit-card rewards, coupon codes, and loyalty points for a purchase. For savings and rewards agents.

## Output

A breakdown of the optimal layered savings strategy showing which portal cashback, credit card rewards, coupon codes, and loyalty points to combine, with the total savings amount and percentage off the purchase.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "lang": {
   "type": "string",
   "description": "lang"
  },
  "query": {
   "type": "string",
   "description": "query"
  },
  "retailer": {
   "type": "string",
   "description": "retailer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dealpulse-cashback-stacking-optimizer-4dd478cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dealpulse-weld.vercel.app](https://www.zero.xyz/host/dealpulse-weld.vercel.app/llms.txt)