E-commerce & Product Data APIs
E-commerce and product data APIs come from retailers, marketplaces and barcode databases. Etsy and Kroger are free to use, exposing live marketplace listings or store catalogs with pricing, while eBay's Browse APIs cover marketplace items. UPC Database looks products up by barcode, Digi-Key and Octopart focus on electronic components, and Printful and Printify list print-on-demand catalogs.
| API | Pricing | Auth | Format | Free tier | Status |
|---|---|---|---|---|---|
Best Buy APIBest Buy's catalog of a million-plus products with pricing, availability, specs, and store locations. Finance & Commerce › E-commerce & Product Data | Free | API key | JSON | — | Live |
CanopyLive Amazon product, pricing, search and best-seller data across 14 marketplaces, no scraping. Finance & Commerce › E-commerce & Product Data | API key | JSON | — | Live | |
CompareFairlyAI-built comparisons of products, services and facts with per-criterion sourced values and rankings. Finance & Commerce › E-commerce & Product Data | Free | None | JSON | — | Live |
CuttingToolsAICross-references carbide insert grades to ISO application classes across major tooling brands. Finance & Commerce › E-commerce & Product Data | None | JSON | Unlimited | Live | |
Digi-KeyLive pricing, stock and specs for electronic components from Digi-Key's catalog, searchable by part number. Finance & Commerce › E-commerce & Product Data | Free | OAuth | JSON | — | Untested |
eBayeBay's Buy/Sell/Browse APIs for searching listings, prices and marketplace item data. Finance & Commerce › E-commerce & Product Data | OAuth | JSON | — | Untested | |
EOSLLooks up end-of-sale and end-of-service-life dates for enterprise hardware, with source links. Finance & Commerce › E-commerce & Product Data | Free | None | JSON | Unlimited | Live |
EtsySearch Etsy's live marketplace listings and manage shop inventory, orders and listings via OAuth. Finance & Commerce › E-commerce & Product Data | Free | API key | JSON | — | Live |
KrogerKroger store locations, product catalog and pricing data via OAuth2, for shopping and grocery integrations. Finance & Commerce › E-commerce & Product Data | Free | OAuth | JSON | — | Live |
Makeup APISearchable catalog of cosmetics: brand, product type, category, price and tags, no key needed. Finance & Commerce › E-commerce & Product Data | Free | None | JSON | Unlimited | Live |
MostExpensiveWatchesLive luxury watch listings, auction hammer prices, reference specs and market price indices. Finance & Commerce › E-commerce & Product Data | Freemium | None | JSON | — | Live |
OctopartElectronic component search covering specs, pricing, and distributor stock, via the Nexar GraphQL API. Finance & Commerce › E-commerce & Product Data | Freemium | JSON | — | Untested | |
PrintfulPrint-on-demand product catalog (apparel, decor, more) with variants, sizes, pricing and mockups. Finance & Commerce › E-commerce & Product Data | Free | API key | JSON | 10k+/day | Live |
PrintifyPrint-on-demand product catalog: blueprints, print providers, variants and pricing, no key needed. Finance & Commerce › E-commerce & Product Data | Free | API key | JSON | 10k+/day | Live |
SellersCalc Fee DataUS seller-fee schedules (percentages, fixed charges) for 21 marketplaces and payment processors. Finance & Commerce › E-commerce & Product Data | Free | None | JSON | Unlimited | Live |
ShopSavvyLooks up products by barcode, UPC, ASIN or name; returns retailer offers, price history and review scores. Finance & Commerce › E-commerce & Product Data | Paid | API key | JSON | — | Live |
UPC DatabaseLooks up product name, brand, price and images by UPC or EAN barcode number. Finance & Commerce › E-commerce & Product Data | Freemium | API key | JSON | 100–1k/day | Live |
Best Buy APIFreeLive
Best Buy's catalog of a million-plus products with pricing, availability, specs, and store locations.
API key · JSON
—
no machine-readable spec
CanopyLive
Live Amazon product, pricing, search and best-seller data across 14 marketplaces, no scraping.
API key · JSON
—
OpenAPI spec · MCP server · llms.txt
CompareFairlyFreeLive
AI-built comparisons of products, services and facts with per-criterion sourced values and rankings.
None · JSON
—
llms.txt
CuttingToolsAILive
Cross-references carbide insert grades to ISO application classes across major tooling brands.
None · JSON
Unlimited
MCP server · llms.txt
Digi-KeyFreeUntested
Live pricing, stock and specs for electronic components from Digi-Key's catalog, searchable by part number.
OAuth · JSON
—
no machine-readable spec
eBayUntested
eBay's Buy/Sell/Browse APIs for searching listings, prices and marketplace item data.
OAuth · JSON
—
OpenAPI spec
EOSLFreeLive
Looks up end-of-sale and end-of-service-life dates for enterprise hardware, with source links.
None · JSON
Unlimited
MCP server · llms.txt
EtsyFreeLive
Search Etsy's live marketplace listings and manage shop inventory, orders and listings via OAuth.
API key · JSON
—
OpenAPI spec
KrogerFreeLive
Kroger store locations, product catalog and pricing data via OAuth2, for shopping and grocery integrations.
OAuth · JSON
—
no machine-readable spec
Makeup APIFreeLive
Searchable catalog of cosmetics: brand, product type, category, price and tags, no key needed.
None · JSON
Unlimited
no machine-readable spec
MostExpensiveWatchesFreemiumLive
Live luxury watch listings, auction hammer prices, reference specs and market price indices.
None · JSON
—
OpenAPI spec · MCP server · llms.txt
OctopartFreemiumUntested
Electronic component search covering specs, pricing, and distributor stock, via the Nexar GraphQL API.
· JSON
—
no machine-readable spec
PrintfulFreeLive
Print-on-demand product catalog (apparel, decor, more) with variants, sizes, pricing and mockups.
API key · JSON
10k+/day
OpenAPI spec
PrintifyFreeLive
Print-on-demand product catalog: blueprints, print providers, variants and pricing, no key needed.
API key · JSON
10k+/day
no machine-readable spec
SellersCalc Fee DataFreeLive
US seller-fee schedules (percentages, fixed charges) for 21 marketplaces and payment processors.
None · JSON
Unlimited
no machine-readable spec
ShopSavvyPaidLive
Looks up products by barcode, UPC, ASIN or name; returns retailer offers, price history and review scores.
API key · JSON
—
llms.txt
UPC DatabaseFreemiumLive
Looks up product name, brand, price and images by UPC or EAN barcode number.
API key · JSON
100–1k/day
no machine-readable spec
Nothing matches that combination. Clear the filters and start from the category.
Choosing an E-commerce & Product Data API
Is there a free E-commerce & Product Data API?
Yes. Best Buy API, Etsy, CompareFairly, Digi-Key, EOSL and 5 others are free to use, and MostExpensiveWatches, Octopart and UPC Database have a free tier alongside paid plans.
Which E-commerce & Product Data APIs work without an API key?
CompareFairly, CuttingToolsAI, EOSL, Makeup API, MostExpensiveWatches and 1 other need no key or sign-up, so you can try them with a plain request.
Can I call an E-commerce & Product Data API from front-end JavaScript?
CompareFairly, CuttingToolsAI, EOSL, Makeup API, MostExpensiveWatches and 1 other allow cross-origin requests and need no key, so they work straight from the browser. For the others, call them from your server so your key stays private.
Can I use E-commerce & Product Data APIs in a commercial project?
Etsy, Canopy, CuttingToolsAI, EOSL, SellersCalc Fee Data and 2 others permit commercial use. CompareFairly and MostExpensiveWatches restrict it, for example to non-commercial or attributed use, so read the terms first.
Which E-commerce & Product Data APIs work with AI agents?
Canopy and MostExpensiveWatches have both an MCP server and an OpenAPI spec. CuttingToolsAI and EOSL have an MCP server, so an AI agent can call them directly. eBay, Etsy and Printful publish an OpenAPI spec for generating clients and tools.
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