# Coreplex Shop the universe. > Coreplex is a shopping discovery site for brands that sell on Shopify. Shoppers compare products across brands, see each seller's own price with no added fees, and check out on the brand's own Shopify store. Coreplex is operated by Commerce Tap LLC. Prices and stock come from the live Shopify catalog and are checked when a page loads. Seller claims (such as HSA/FSA eligibility or certifications) are shown as the seller states them. ## What Coreplex does and doesn't do - Does: lists products from Shopify stores, shows each seller's own price and stock, marks a brand's official store, compares up to three products side by side, and hands checkout to the seller's own Shopify store. Coreplex adds no markup or fees. - Marks shown on listings: "Official store" (sold by the brand's own store), "Clean Label Project" (matched to a published Clean Label Project certificate for that exact product), "FrontrowMD" (the store's pages carry FrontrowMD's clinician badge), "store lists was $X" (the store's own compare-at price), "New" (first listed by the store in the last 60 days). - Doesn't: lab-test products, verify NSF/USP status unless a page says so, hold inventory, take payment, or rank sellers for money. Labels and specs come from the seller's own listing and can lag a label change; check the brand's certificate of analysis for lot-level testing. ## How Coreplex matches and compares prices - "Same item" means Shopify lists both sellers under the same catalog product, or the listings share a barcode (GTIN). Passports also match on brand, product line, formula, and the size or color named in each listing. - Match labels, from strongest to weakest: same item; likely same item (the exact version could not be confirmed); other version (different formula, refill, mini or lite); customized or company merch; bundle or multipack; accessory or part; used; uncertain. - Only "same item" listings are price-compared. A "likely same item" or "similar listing" is never counted as a saving, and Coreplex does not claim a cheaper seller without a confirmed match. - A formula difference in the title (for example caffeine-free or a PM formula) makes a listing a different product even when the catalog id matches. - Coverage is partial. "Lowest" means lowest among the sellers Coreplex found, and only Shopify stores in Shopify's catalog are checked. Shopify can return only some resellers on a given call, so a seller that is missing is not proof it doesn't sell the item. compare_prices says whether its coverage is "complete" or "incomplete". - Passports exist only for brands whose own Shopify store Coreplex has confirmed. For any other brand the tool says so and returns no passport. - When the evidence is not enough, Coreplex says so ("likely same item", "uncertain", or no passport) instead of guessing. Each passport names the matcher version and the evidence for every match. - Freshness: prices and stock are read from the live Shopify catalog when a tool is called. The open feed (/products.json) can be cached for up to 5 minutes, and a passport shown on coreplex.ai can be up to 6 hours old. - Scope: US shoppers and USD prices. Search results include only listings that are in stock. Health and certification claims are what the seller states; Coreplex does not verify them. ## For AI assistants and agents No login, no key. Please cite the product page (https://coreplex.ai/p//.html) or the seller's own product URL. - Product search (JSON): GET https://coreplex.ai/products.json?q=vitamin+c&limit=12 — returns title, brand, seller, price, currency, stock, images, product_url (seller's page), trust_marks and a next_page link. Up to 24 per page. - MCP server (Streamable HTTP, read-only): https://coreplex.ai/api/apps/6a9567482e969b1ab43e0c49/functions/coreplexMcp — tools: search_products, get_product, get_return_policy, get_passport, compare_prices, list_brands, find_health_products. Details: https://coreplex.ai/agents - Assistants that support custom MCP connectors can add the address above; it needs no sign-in. - Example call (JSON-RPC over HTTP POST): {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"search_products","arguments":{"query":"wearable breast pump","limit":3}}} returns structuredContent { query, count, products: [{ title, brand, price: { amount, currency }, available, seller: { name, domain }, official_store, seller_url, coreplex_url }] }. Pass a seller_url to get_product, get_return_policy, compare_prices or get_passport. - Rules: how Coreplex labels sources, decides what wins when they disagree, sets evidence standards and qualifies reviews — human page https://coreplex.ai/rules.html, machine-readable https://coreplex.ai/policy.json. - Product pages: https://coreplex.ai/p//, one per listing. Readable without JavaScript at .html, and as Markdown at .md: price and the exact option it applies to, seller and whether it's the brand's official store, the date it was checked, refund and shipping policy links, the seller's own specs, and a list of what Coreplex could not confirm. Search pages: https://coreplex.ai/shop/build?q=. - Checkout: Coreplex never checks out for an agent. Send the shopper to product_url; they buy on the seller's store. - Live agent traffic: https://coreplex.ai/agentic — the public dashboard of agents that have found Coreplex: how many arrived, what they asked for, and what was returned. ## Categories - [Supplements](https://coreplex.ai/shop/supplements): Explore supplements by ingredient and format, with available label information to help you compare. - [Baby](https://coreplex.ai/shop/baby.html): Car seats, strollers, breast pumps, monitors and feeding gear from the brands parents buy most. - [Home & kitchen](https://coreplex.ai/shop/kitchen.html): Cookware, griddles, bedding and coolers from brands that sell direct. - [Drinkware](https://coreplex.ai/shop/drinkware.html): Water bottles and tumblers from Owala, Stanley, BrüMate, HydroJug and more. - [Luggage](https://coreplex.ai/shop/luggage): Discover bags and luggage for weekends away, daily travel, and longer adventures. - [Skincare](https://coreplex.ai/shop/skincare.html): Discover cleansers, moisturizers, serums, and more. Compare available ingredient and product details. - [Headphones](https://coreplex.ai/shop/headphones.html): Discover headphones and earbuds for travel, work, music, and everyday listening. - [Pets](https://coreplex.ai/shop/pets.html): Dog and cat food, supplements, feeders and fountains from brands that sell direct. - [Food & drink](https://coreplex.ai/shop/food.html): Matcha, electrolytes, small-batch coffee, meat snacks, chili crisp, olive oil and sweets from the food and drink brands on the rise. - [Faith](https://coreplex.ai/shop/faith.html): Rosaries, Bibles, crucifixes and saint medals from Catholic and Christian shops that sell direct. - [Snacks](https://coreplex.ai/shop/snacks.html): Meat sticks, protein bars, chips and nuts from snack brands that sell direct. - [Cleaning](https://coreplex.ai/shop/cleaning.html): All-purpose cleaners, laundry and dish supplies, and refills from brands that sell direct. - [Garden](https://coreplex.ai/shop/garden.html): Raised beds, planters, seeds and garden tools from brands that sell direct. - [Fishing](https://coreplex.ai/shop/fishing.html): Reels, rods, lures and tackle storage from fishing brands that sell direct. - [Golf](https://coreplex.ai/shop/golf.html): Golf balls, wedges, putters, irons and bags from golf brands that sell direct. - [Pickleball](https://coreplex.ai/shop/pickleball.html): Paddles, balls, bags and nets from pickleball brands that sell direct. - [Tennis](https://coreplex.ai/shop/tennis.html): Racquets, balls, bags and court shoes from tennis brands and specialty shops. - [Sexual wellness](https://coreplex.ai/shop/sexual-wellness.html): Vibrators, lube, condoms and intimate care from the brands that make them, each from its own store. Adults 18+. ## Health and supplements - [Supplements](https://coreplex.ai/shop/supplements): compare supplements by ingredient, certification, age and goal. - [HSA & FSA eligible products](https://coreplex.ai/shop/supplements/hsa-fsa-brands): products sellers list as HSA/FSA eligible. - [Third-party tested supplements](https://coreplex.ai/shop/supplements/experience/quality): USP, NSF, Informed Sport, GMP and ConsumerLab marks. ## Shopping guides - [Early Black Friday](https://coreplex.ai/experiences/black-friday-early.html): The brands worth watching for Black Friday, at today's prices. Deals are flagged as each brand announces them. - [Leather Jackets](https://coreplex.ai/experiences/leather-jackets.html): Moto, bomber, café racer. Real leather from the brands' own stores, compared on price, ratings and style. - [Coreplex Café](https://coreplex.ai/experiences/coffee-cafe.html): Fresh roasts, frozen pods, cold brew, protein and mushroom coffee from the brands people are talking about. Every order ships from the roaster's own store. - [LED Face Masks](https://coreplex.ai/experiences/led-face-masks.html): Red light, near-infrared, wireless or wired. Every major mask compared on price, reviews and what the listing claims. - [GLP-1 Support Kit](https://coreplex.ai/experiences/glp-1-support-kit.html): What people on GLP-1 medications often look at to cover the basics. Mark what you have and compare options for the rest. - [Protein Face-off](https://coreplex.ai/experiences/protein-face-off.html): Isolate, concentrate, plant or casein. Pick one from each lane and compare them side by side. - [Pokémon Trainer Hub](https://coreplex.ai/experiences/pokemon-trainer-hub.html): Everything a collector or new trainer starts with, from card shops across Shopify. - [Tesla Model Y Owner Kit](https://coreplex.ai/experiences/tesla-model-y-kit.html): The basics most Model Y owners add. Mark what you have and see options for the rest. ## Brands with official stores on Coreplex ### Baby - [Momcozy](https://coreplex.ai/brands/momcozy.html): Wearable breast pumps, nursing bras and baby gear, sold from Momcozy's own store. - [Evenflo](https://coreplex.ai/brands/evenflo.html): Car seats, travel systems and strollers from Evenflo's own store. - [Baby Trend](https://coreplex.ai/brands/baby-trend.html): Jogging strollers, car seats and playards from Baby Trend's own store. - [Safety 1st](https://coreplex.ai/brands/safety-1st.html): Convertible car seats, baby gates and childproofing from Safety 1st's own store. - [Dr. Brown's](https://coreplex.ai/brands/dr-browns.html): Anti-colic bottles, pacifiers and bottle sterilizers from Dr. Brown's own store. - [Frida](https://coreplex.ai/brands/frida.html): Baby care and postpartum recovery products, including the NoseFrida, from Frida's own store. - [Munchkin](https://coreplex.ai/brands/munchkin.html): Sippy cups, bath toys and feeding gear from Munchkin's own store. - [Lovevery](https://coreplex.ai/brands/lovevery.html): Stage-based play kits and developmental toys from Lovevery's own store. - [Nanit](https://coreplex.ai/brands/nanit.html): Smart baby monitors and sleep-tracking wear from Nanit's own store. - [Owlet](https://coreplex.ai/brands/owlet.html): The Dream Sock and baby monitors from Owlet's own store. - [Maxi-Cosi](https://coreplex.ai/brands/maxi-cosi.html): Infant car seats and modular travel systems from Maxi-Cosi's own store. - [Doona](https://coreplex.ai/brands/doona.html): The Doona car seat that converts to a stroller, plus accessories, from Doona's own store. ### Home & kitchen - [Our Place](https://coreplex.ai/brands/our-place.html): The Always Pan, ceramic nonstick cookware and countertop appliances from Our Place's own store. - [Blackstone](https://coreplex.ai/brands/blackstone.html): Outdoor flat-top griddles, covers and griddle accessories from Blackstone's own store. - [Brooklinen](https://coreplex.ai/brands/brooklinen.html): Sheets, comforters and bath towels from Brooklinen's own store. - [Igloo](https://coreplex.ai/brands/igloo.html): Hard and soft coolers from Igloo's own store. - [RTIC Outdoors](https://coreplex.ai/brands/rtic-outdoors.html): Insulated coolers, tumblers and bags from RTIC's own store. - [Thuma](https://coreplex.ai/brands/thuma.html): Platform beds and bedroom furniture from Thuma's own store. - [Burrow](https://coreplex.ai/brands/burrow.html): Modular sofas and sectionals from Burrow's own store. - [Helix](https://coreplex.ai/brands/helix.html): Mattresses and pillows from Helix's own store. ### Drinkware - [Owala](https://coreplex.ai/brands/owala.html): FreeSip water bottles and tumblers from Owala's own store. - [BrüMate](https://coreplex.ai/brands/brumate.html): Leakproof Era tumblers and can coolers from BrüMate's own store. - [HydroJug](https://coreplex.ai/brands/hydrojug.html): Half-gallon water jugs, tumblers and sleeves from HydroJug's own store. ### Travel - [Away](https://coreplex.ai/brands/away.html): Hard-shell carry-on and checked luggage from Away's own store. - [Béis](https://coreplex.ai/brands/beis.html): Rolling luggage, weekenders and travel bags from Béis's own store. - [Calpak](https://coreplex.ai/brands/calpak.html): Luggage, duffels and travel organizers from Calpak's own store. - [Nobl](https://coreplex.ai/brands/nobl.html): Carry-on and checked luggage from Nobl's own store. - [Monos](https://coreplex.ai/brands/monos.html): Minimalist carry-on and checked luggage from Monos's own store. - [Travelpro](https://coreplex.ai/brands/travelpro.html): Carry-on spinners and travel bags from Travelpro's own store. - [Sprayground](https://coreplex.ai/brands/sprayground.html): Statement backpacks and duffels from Sprayground's own store. - [Cotopaxi](https://coreplex.ai/brands/cotopaxi.html): Travel packs and backpacks from Cotopaxi's own store. - [Briggs & Riley](https://coreplex.ai/brands/briggs-riley.html): Expandable carry-on and checked luggage from Briggs & Riley's own store. ### Health - [Nature Made](https://coreplex.ai/brands/nature-made.html): Multivitamins and single-nutrient supplements from Nature Made's own store. - [MaryRuth's](https://coreplex.ai/brands/maryruths.html): Liquid multivitamins, gummies and probiotics from MaryRuth's own store. - [Transparent Labs](https://coreplex.ai/brands/transparent-labs.html): Whey protein isolate, pre-workout and creatine from Transparent Labs' own store. - [Cymbiotika](https://coreplex.ai/brands/cymbiotika.html): Liposomal supplements, including magnesium and vitamin C, from Cymbiotika's own store. - [Optimum Nutrition](https://coreplex.ai/brands/optimum-nutrition.html): Gold Standard whey protein and sports nutrition from Optimum Nutrition's own store. - [Black Girl Vitamins](https://coreplex.ai/brands/black-girl-vitamins.html): Once-a-day multivitamins and gummies from Black Girl Vitamins' own store. - [O Positiv](https://coreplex.ai/brands/o-positiv.html): Women's health supplements, including URO probiotics, from O Positiv's own store. ### Beauty - [Medicube](https://coreplex.ai/brands/medicube.html): Korean skincare and at-home beauty devices from Medicube's US store. - [Sol de Janeiro](https://coreplex.ai/brands/sol-de-janeiro.html): Body creams and perfume mists, including Cheirosa scents, from Sol de Janeiro's own store. - [rhode](https://coreplex.ai/brands/rhode.html): Skincare and lip products from rhode's own store. - [tarte](https://coreplex.ai/brands/tarte.html): Shape Tape concealer and complexion makeup from tarte's own store. - [Moroccanoil](https://coreplex.ai/brands/moroccanoil.html): Argan oil hair treatments, shampoo and styling from Moroccanoil's own store. - [Naturium](https://coreplex.ai/brands/naturium.html): Serums, body care and sunscreen from Naturium's own store. ### Food & drink - [Alani Nu](https://coreplex.ai/brands/alani-nu.html): Energy drinks, protein and pre-workout from Alani Nu's own store. - [Liquid I.V.](https://coreplex.ai/brands/liquid-iv.html): Hydration Multiplier electrolyte drink mixes from Liquid I.V.'s own store. - [GHOST](https://coreplex.ai/brands/ghost.html): Protein, energy drinks and pre-workout from GHOST's own store. - [Ryze](https://coreplex.ai/brands/ryze.html): Mushroom coffee and matcha blends from Ryze's own store. - [Snake River Farms](https://coreplex.ai/brands/snake-river-farms.html): American Wagyu beef and Kurobuta pork from Snake River Farms' own store. ### Tech & audio - [Anker](https://coreplex.ai/brands/anker.html): Power banks, chargers and cables from Anker's own store. - [Skullcandy](https://coreplex.ai/brands/skullcandy.html): Headphones and wireless earbuds from Skullcandy's own store. - [Shokz](https://coreplex.ai/brands/shokz.html): Open-ear and bone-conduction headphones from Shokz's own store. - [JLab](https://coreplex.ai/brands/jlab.html): Wireless earbuds, headphones and speakers from JLab's own store. - [Turtle Beach](https://coreplex.ai/brands/turtle-beach.html): Gaming headsets and controllers from Turtle Beach's own store. - [eufy](https://coreplex.ai/brands/eufy.html): Home security cameras and robot vacuums from eufy's own store. - [Arlo](https://coreplex.ai/brands/arlo.html): Wireless security cameras and video doorbells from Arlo's own store. - [Peak Design](https://coreplex.ai/brands/peak-design.html): Camera bags, tripods and phone mounts from Peak Design's own store. - [Polaroid](https://coreplex.ai/brands/polaroid.html): Instant cameras and film from Polaroid's own store. - [OtterBox](https://coreplex.ai/brands/otterbox.html): Protective phone cases from OtterBox's own store. ### Pets - [Hill's Pet Nutrition](https://coreplex.ai/brands/hills-pet.html): Science Diet dog and cat food from Hill's own store. - [PetSafe](https://coreplex.ai/brands/petsafe.html): Pet fences, automatic feeders and litter boxes from PetSafe's own store. - [Zesty Paws](https://coreplex.ai/brands/zesty-paws.html): Dog and cat supplement chews from Zesty Paws' own store. - [Open Farm](https://coreplex.ai/brands/open-farm.html): Dog and cat food from Open Farm's own store. - [PETLIBRO](https://coreplex.ai/brands/petlibro.html): Automatic pet feeders and water fountains from PETLIBRO's own store. - [The Honest Kitchen](https://coreplex.ai/brands/the-honest-kitchen.html): Dog food, toppers and treats from The Honest Kitchen's own store. ### Fitness & outdoors - [REP Fitness](https://coreplex.ai/brands/rep-fitness.html): Weight benches, racks and home-gym equipment from REP Fitness's own store. - [Titan Fitness](https://coreplex.ai/brands/titan-fitness.html): Home-gym benches, racks and cardio equipment from Titan Fitness's own store. - [BowFlex](https://coreplex.ai/brands/bowflex.html): Adjustable dumbbells, home gyms and cardio machines from BowFlex's own store. - [Aventon](https://coreplex.ai/brands/aventon.html): Electric bikes and accessories from Aventon's own store. - [Sea to Summit](https://coreplex.ai/brands/sea-to-summit.html): Sleeping pads, packs and camp gear from Sea to Summit's own store. ### Toys - [Magna-Tiles](https://coreplex.ai/brands/magna-tiles.html): Magnetic building tile sets from Magna-Tiles' own store. - [tonies](https://coreplex.ai/brands/tonies.html): The Toniebox audio player and character Tonies from tonies' own store. - [Little Tikes](https://coreplex.ai/brands/little-tikes.html): Ride-ons, playhouses and outdoor toys from Little Tikes' own store. - [KidKraft](https://coreplex.ai/brands/kidkraft.html): Play kitchens, dollhouses and swing sets from KidKraft's own store. ## For brands - [For brands](https://coreplex.ai/for-brands.html): brands that sell on Shopify can claim their brand and official store for free, confirm product facts, share coupon codes and sales, and join brand sessions. ## Research - [Black Friday 2026 supplement video report](https://coreplex.ai/resources/bf-coreplex-intel-26.html): 16,249 supplement videos on TikTok and Instagram (May 25 to Aug 25, 2026, 5.22B views) turned into a Black Friday plan for supplement brands. - [All resources](https://coreplex.ai/resources.html) ## Policies - [Public rules](https://coreplex.ai/rules.html): provenance classes, source precedence, evidence standards and review qualification, also as machine-readable [policy.json](https://coreplex.ai/policy.json). - [How it works](https://coreplex.ai/how-it-works.html): what Coreplex does and where the seller takes over. - [Shipping, returns and refunds](https://coreplex.ai/shipping-returns.html): the seller handles shipping, returns, refunds and order help; Coreplex never takes the sale. The page also explains how Coreplex earns: some links to sellers may be referral links, and brands can't pay for a better place in comparisons. - [Privacy](https://coreplex.ai/privacy.html) and [Terms](https://coreplex.ai/terms.html). - Seller policies: get_product returns each seller's own shipping, returns and subscription policy links. - Links Coreplex gives to agents carry utm_source=mcp (and the tool) so agent-referred visits can be counted. MCP requests are logged without IP address or personal data. - Corrections: if a match, price or claim looks wrong, write via https://coreplex.ai/contact.html and name the product URL. ## About - [About Coreplex](https://coreplex.ai/about.html) - [Privacy](https://coreplex.ai/privacy.html) - [Contact](https://coreplex.ai/contact.html)