Barcode Lookup API

A barcode lookup API is a web service that takes a barcode number and returns the product it identifies. Your app sends the code, the API answers with structured data: name, brand, images, category, and other identifiers. It is different from a barcode scanner API, which only reads the bars in a camera image. Scanning gives you the number. Lookup tells you what the number means.

Authentication uses two headers, an access key and a secret key. Here is a real request:

curl -X POST "https://api.ecomsource.ai/api/v1/search/product" -H "X-Access-Key: your_access_key" -H "X-Secret-Key: your_secret_key" -H "Content-Type: application/json" -d '{"identifier": "036000291452", "identifierType": "upc"}'

Swap the identifierType to ean, gtin, isbn, or asin and the same endpoint handles all of them. The API documentation has full examples in cURL, Node.js, Axios, and Python, plus every response field. The same engine powers the broader product data API.

All figures are from the pricing page and are current as of August 2026. For context: Go-UPC charges $74.95 per month for 5,000 requests, about $14.99 per 1,000. Barcode Lookup charges $99 per month for 5,000 calls, about $19.80 per 1,000. UPCitemdb offers a free tier of 100 requests per day with a 6 per minute burst limit. See our comparison pages for line-by-line detail.

Sandbox is capped at 10 calls per day. Paid plans meter monthly and are built for sustained production traffic. If you need to process a file rather than a stream, the bulk barcode lookup accepts whole lists, and the Professional plan adds CSV and JSON exports plus webhooks so your system reacts when data changes.

• Scanner apps. The camera reads the bars, our API supplies the product record behind them.
• Inventory and warehouse systems. Scan at receiving, resolve to one clean record, sync stock by GTIN.
• Price comparison and arbitrage tools. Match the same product across stores by identifier, not by fuzzy name.
• Marketplace and catalog software. Enrich thin listings with brands, images, and categories.
• AI agents. Language models resolve products reliably when they can call an identifier API.

The free tier is a real tier. Full JSON and the full database, not a locked demo.

Amazon depth. ASIN conversion, variation mapping, and buy box data live in the same record as the barcode.

Price per call. At $2.98 to $4.90 per 1,000, production volume costs a fraction of the established alternatives named above.

Clean JSON. Built for pipelines first, so responses parse without scraping or cleanup.

A healthy integration plans for three outcomes. A full match returns the complete record. A partial match returns the record with some optional fields empty, dimensions being the most common gap, so code against nulls rather than assuming every field. A miss returns a structured not-found response rather than an error, and the right fallback is usually a name search with the brand and model you already have. Treat HTTP errors separately from data misses, and back off on rate-limit responses instead of retrying instantly.

• Run 50 of your real products through the sandbox and eyeball the field coverage for your categories.
• Decide your not-found fallback: queue for name search, flag for human review, or both.
• Set your metering alert below your plan cap so month-end batches never hit a wall.
• Store the returned identifiers with your records. Every future lookup gets cheaper when your own data carries clean GTINs.
• Upgrade only when the sandbox cap actually blocks you. The free tier is meant for real testing.

Create a free API key and make your first call in minutes. Sandbox includes 10 calls a day, no card. Upgrade only when production traffic needs it. Start at the docs or compare with UPCitemdb, Go-UPC, and Barcode Lookup.