{"uid":"cap_Z_4hkoXj4ZzSQUTBuizqt","slug":"dealpulse-cashback-stack-optimizer-8a4e018f","name":"DealPulse Cashback Stack Optimizer","description":"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.","url":"https://dealpulse.theaslangroupllc.com/api/deals/stack?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","errors":{"400":{"example":{"error":"invalid request"},"description":"Invalid or missing parameter(s). Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."},"402":{"description":"Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."},"500":{"example":{"error":"upstream_failed"},"description":"Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":{"p10Cents":"10.0000","medianCents":"10.0000","p90Cents":"10.0000","minCents":"10.0000","maxCents":"10.0000","p95Cents":"10.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wXdE-dcwTxQ86mHYtW5C8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Builds the optimal savings stack for a purchase by layering shopping-portal cashback, credit-card rewards, coupon codes, and loyalty points together","exampleAgentPrompt":"I'm about to buy a $250 pair of shoes at Nike.com — can you stack all the cashback portals, credit card rewards, coupon codes, and loyalty points to tell me the absolute best combination that saves me the most money?","exampleUseCases":null,"resultDescription":"Returns an optimized savings stack showing the best combination of shopping-portal cashback (e.g. Rakuten rate), recommended credit card for maximum rewards, active coupon codes, and loyalty point opportunities — along with a total projected savings amount and percentage for the purchase.","failureModes":["Store not supported — no cashback or coupon data available for that retailer","Invalid or unresolvable store URL — returns 400 with a store not found error","No stackable deals found — returns a result with zero savings opportunities","Cashback portal data stale — rates may not reflect real-time portal offers","Credit card rewards data unavailable for the specified card"],"whenToPreferThis":"Use this endpoint when a user wants to maximize total savings by combining multiple discount layers (portal cashback + credit card rewards + coupons + loyalty points) rather than finding just one type of deal. Prefer this over single-category endpoints (coupon-only or cashback-only) when the goal is holistic savings optimization for a specific purchase.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T00:33:57.295Z","isFirstParty":false,"canonicalSlug":"dealpulse-cashback-stack-optimizer-8a4e018f"}