# GTIN / EAN / UPC Barcode Validator — Check Digit + GS1 Prefix (`caulleonard/gtin-barcode-validator`) Actor Validate GTIN-8, UPC-A, EAN-13 and GTIN-14 barcodes via the GS1 mod-10 check digit. Returns format, expected check digit, and the GS1 prefix's Member Organisation. Fast Standby API, no login. - **URL**: https://apify.com/caulleonard/gtin-barcode-validator.md - **Developed by:** [Fatih Şahinbaş](https://apify.com/caulleonard) (community) - **Categories:** Developer tools, E-commerce - **Stats:** 1 total users, 0 monthly users, 0.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $1.00 / 1,000 api calls This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage. Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases. In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours, and optionally produces a well-defined JSON output, datasets with results, or files in key-value store. In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server. Actors are written with capital "A". ## How to integrate an Actor? If asked about integration, you help developers integrate Actors into their projects. You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready. The best way to integrate Actors is as follows. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md). If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md). For usage examples, see the [API](#api) section below. For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt). # README ## GTIN / EAN Barcode Validator Validate **GTIN-8, GTIN-12 (UPC-A), GTIN-13 (EAN-13)** and **GTIN-14** barcodes using the official **GS1 mod-10 check digit** algorithm — plus a **GS1 prefix → Member Organisation** lookup. Runs in **Standby mode** as a fast HTTP API. No login, no personal data. ### Endpoint ```` GET /validate?gtin= ``` Spaces and hyphens in the input are ignored. #### Example ``` GET /validate?gtin=4006381333931 ```` ```json { "inputRaw": "4006381333931", "normalized": "4006381333931", "valid": true, "format": "GTIN-13 (EAN-13)", "length": 13, "checkDigitGiven": 1, "checkDigitExpected": 1, "gs1Prefix": "400", "gs1PrefixOrganization": "GS1 Germany", "prefixNote": "GS1 prefix identifies the GS1 Member Organisation that licensed the company prefix, not the country of manufacture.", "errors": [] } ```` An invalid code returns `"valid": false` with a reason in `errors`, for example a check-digit mismatch, a wrong length, or non-digit characters. ### What it checks - **Length** — must be 8, 12, 13 or 14 digits. - **GS1 mod-10 check digit** — the standard right-anchored (weights 3,1,3,1…) checksum used by all GTIN formats. Detects every single-digit error and most transposition errors. - **GS1 prefix** — for GTIN-12/13/14, the leading digits are mapped to the GS1 Member Organisation that issued the company prefix. > **Note on the prefix:** the GS1 prefix indicates the GS1 Member Organisation that licensed the company prefix — **not** the country where the product was manufactured. GTIN-8 uses a separate allocation scheme, so no prefix organisation is returned for it. ### Response fields | Field | Description | |-------|-------------| | `inputRaw` | Raw input as received | | `normalized` | Input after stripping spaces and hyphens | | `valid` | `true` if length and check digit are both valid | | `format` | Detected GTIN format | | `length` | Digit length after normalization | | `checkDigitGiven` | Check digit present in the input | | `checkDigitExpected` | Correct GS1 mod-10 check digit | | `gs1Prefix` | First 3 digits of the GTIN-13 view (GTIN-12/13/14) | | `gs1PrefixOrganization` | GS1 Member Organisation for that prefix | | `prefixNote` | Clarification on what the prefix means | | `errors` | Reasons the code was rejected, if any | ### Use cases - Validate product barcodes before importing them into a catalog or ERP. - Clean and de-duplicate marketplace / supplier feeds. - Verify UPC-A (US) and EAN-13 (EU/rest of world) codes in one call. - Check GTIN-14 case/carton codes in logistics data. ### Pricing Pay-per-event: **$0.001 per API call** (`api-call`). ### Notes This Actor performs offline algorithmic validation. A `valid` result means the barcode is **structurally correct** (well-formed and check-digit-consistent); it does **not** confirm that the code is registered to a real, active product in the GS1 GEPIR registry. # Actor input Schema ## Actor input object example ```json {} ``` # API You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup. ## JavaScript example ```javascript import { ApifyClient } from 'apify-client'; // Initialize the ApifyClient with your Apify API token // Replace the '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = {}; // Run the Actor and wait for it to finish const run = await client.actor("caulleonard/gtin-barcode-validator").call(input); // Fetch and print Actor results from the run's dataset (if any) console.log('Results from dataset'); console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`); const { items } = await client.dataset(run.defaultDatasetId).listItems(); items.forEach((item) => { console.dir(item); }); // 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs ``` ## Python example ```python from apify_client import ApifyClient # Initialize the ApifyClient with your Apify API token # Replace '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = {} # Run the Actor and wait for it to finish run = client.actor("caulleonard/gtin-barcode-validator").call(run_input=run_input) # Fetch and print Actor results from the run's dataset (if there are any) print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"]) for item in client.dataset(run["defaultDatasetId"]).iterate_items(): print(item) # 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start ``` ## CLI example ```bash echo '{}' | apify call caulleonard/gtin-barcode-validator --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=caulleonard/gtin-barcode-validator", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "GTIN / EAN / UPC Barcode Validator — Check Digit + GS1 Prefix", "description": "Validate GTIN-8, UPC-A, EAN-13 and GTIN-14 barcodes via the GS1 mod-10 check digit. Returns format, expected check digit, and the GS1 prefix's Member Organisation. Fast Standby API, no login.", "version": "0.0", "x-build-id": "jMNZfa3m8evwAmGar" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/caulleonard~gtin-barcode-validator/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-caulleonard-gtin-barcode-validator", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/caulleonard~gtin-barcode-validator/runs": { "post": { "operationId": "runs-sync-caulleonard-gtin-barcode-validator", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/caulleonard~gtin-barcode-validator/run-sync": { "post": { "operationId": "run-sync-caulleonard-gtin-barcode-validator", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "properties": {} }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } } } ```