Best credit card for a spending category / maximize cashback and points / which card to use. Finds the card that earns the most rewards (cashback, points, miles) for a given spending category and purchase. For shopping and rewards agents.

Verify which deals are REAL at a store right now: first-party-only check of the merchant's own site, feeds and loyalty/newsletter perks, every offer source-linked; optional claimed-code verdict (confirmed / unverified / no trace). The anti-fake-coupon endpoint for checkout agents.

Price comparison / compare prices / cheapest retailer for a product. Compares the live price of a named item across major retailers worldwide to find the cheapest source, with buy links. For shopping and deal-hunting agents.

Black Friday / Prime Day / Cyber Monday deals / best sale-event deals by category. Returns the top current deals for a major shopping sale event, optionally filtered to a category, with buy links. For shopping and deal-hunting agents.

Report live discounted gift-card rates for a brand across guaranteed resale marketplaces, with stacked-savings math (card discount + promo + sale) and the honest risk picture. Often the single largest discount available on a brand.

Price history / buy now or wait / is it a good deal / historical low for a product. Returns the price trend and lowest-ever context so agents can decide whether the current price is a real deal or worth waiting. For shopping and deal-hunting agents.

Best price / cheapest deal / where to buy a specific product. Finds the best current price on a named product across all retailers worldwide, with applicable coupon and promo codes and buy links. For shopping and deal-hunting agents.

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.

Coupon codes / promo codes / discount codes / store cashback for a store or restaurant. Returns real-time working coupon codes, current promotions, and cashback rates for any named retailer or restaurant worldwide. For shopping and deal-hunting agents.

Student discounts / college student deals / verified student savings by category. Returns the best current verified student discounts for a category, with how to verify student status to claim each. For shopping and savings agents.

Citation-locked subscription-trap demand letter — refund demand, unconditional-gift letter (goods), or cancellation-obstruction letter under 10 states' auto-renewal laws (CA/NY/DC/VA/IL/VT/OR/HI/DE + FL void-refund tier), safe-harbor framed: the refund the statute's own escape hatch requires is what the letter demands. In DE the letter IS the §2737(a) pre-suit notice. Verbatim quotes, computed exposure (DC treble/$1,500; HI $1,000 floor). Honest-no on unsupportable facts.

Subscription-trap rights check — the FTC click-to-cancel rule is VACATED (8th Cir. 2025); your rights live in STATE auto-renewal laws. Deterministic duty + remedy math, 13 states: CA/NY/DC/VA/IL/VT/OR/HI/DE letter-worthy (DC treble/$1,500; HI $1,000 floor; DE treble + pre-suit notice), FL void-refund tier, honest-no CO/WA/GA. Effective-date gating, exempt-seller screen, scienter flags, SOL deadlines incl. OR 1-yr discovery. Verified against primary statute text. No LLM.