> Part of the walkerOS documentation. Project overview and full index: # Criteo Events API [Server](#)[ ](https://github.com/elbwalker/walkerOS/tree/main/packages/server/destinations/criteo) [Source code](https://github.com/elbwalker/walkerOS/tree/main/packages/server/destinations/criteo)[ ](https://www.npmjs.com/package/@walkeros/server-destination-criteo) [Package](https://www.npmjs.com/package/@walkeros/server-destination-criteo) Beta Server-side event delivery to Criteo's Events API (S2S v0) for reliable retargeting, bypassing browser limitations and providing consistent user matching for ad optimization. Where this fits Criteo Events API is a **server destination** in the walkerOS flow: Sends events server-side to Criteo using raw HTTP (no SDK). Authentication is in-payload (\`account\` = Partner ID, \`id.mapping\_key\` = Caller ID). Emails are hashed into MD5, SHA-256, and SHA-256(MD5) before sending. ## Installation[​](#installation "Direct link to Installation") ``` npm install @walkeros/server-destination-criteo ``` * Integrated * Bundled ``` import { startFlow } from '@walkeros/collector'; import { destinationCriteo } from '@walkeros/server-destination-criteo'; await startFlow({ destinations: { criteo: { code: destinationCriteo, config: { settings: { partnerId: 'YOUR_PARTNER_ID', callerId: 'YOUR_CALLER_ID', }, }, }, }, }); ``` Add to your `flow.json` destinations: ``` "destinations": { "criteo": { "package": "@walkeros/server-destination-criteo", "import": "destinationCriteo", "config": { "settings": { "partnerId": "YOUR_PARTNER_ID", "callerId": "YOUR_CALLER_ID" } } } } ``` [See bundled mode setup](https://www.walkeros.io/docs/getting-started/modes/bundled.md) | [CLI reference](https://www.walkeros.io/docs/apps/cli.md) ## Configuration[​](#configuration "Direct link to Configuration") This destination uses the standard destination config wrapper (consent, data, env, id, ...). For the shared fields see [destination configuration](https://www.walkeros.io/docs/destinations.md#configuration). Package-specific fields live under `config.settings` and are listed below. ## Settings[​](#settings "Direct link to Settings") | Property | Type | Description | More | | ------------ | ------------------------ | --------------------------------------------------------------------------------------- | ---- | | `partnerId*` | `string` | Criteo Partner ID (numeric string, provided by Criteo) | | | `callerId*` | `string` | Caller ID for user mapping (provided by Criteo) | | | `siteType` | `'d' \| 'm' \| 't'` | Site type: d (desktop), m (mobile web), t (tablet) | | | `country` | `string` | ISO 3166-1 alpha-2 country code | | | `language` | `string` | 2-letter language code | | | `url` | `string` | Custom Events API endpoint (default https\://widget.criteo.com/m/event?version=s2s\_v0) | | | `user_data` | `Record` | Mapping for identity fields | | \* Required fields ## Mapping[​](#mapping "Direct link to Mapping") This package does not define custom rule-level settings. For the standard rule fields (consent, condition, data, batch, name, policy) see [mapping](https://www.walkeros.io/docs/mapping.md). ## Examples ### Add to cart A product add becomes a Criteo addToCart event with the item id, price, and quantity. Event ``` { "name": "product add", "data": { "id": "SKU-B2", "name": "Running Shoes", "price": 89.99 }, "context": { "shopping": [ "intent", 0 ] }, "globals": { "pagegroup": "shop" }, "custom": { "completely": "random" }, "user": { "id": "us3r", "device": "c00k13", "session": "s3ss10n" }, "nested": [ { "entity": "product", "data": { "id": "SKU-B2", "name": "Running Shoes", "price": 89.99, "quantity": 1 } } ], "consent": { "functional": true }, "id": "afef35f573f90554", "trigger": "click", "entity": "product", "action": "add", "timestamp": 1700000901000, "timing": 3.14, "source": { "count": 1, "trace": "0a1b2c3d4e5f60718293a4b5c6d7e8f9", "type": "browser", "platform": "web", "url": "https://shop.example.com/products/running-shoes" } } ``` Mapping ``` { "name": "addToCart", "data": { "map": { "item": { "loop": [ "nested", { "condition": { "$code": "e=>w(e)&&\"product\"===e.entity" }, "map": { "id": "data.id", "price": "data.price", "quantity": { "key": "data.quantity", "value": 1 } } } ] } } } } ``` Out ``` sendServer("https://widget.criteo.com/m/event?version=s2s_v0", "{\"version\":\"walkeros_criteo_1.0.0\",\"site_type\":\"d\",\"account\":\"PARTNER_ID\",\"id\":{\"mapping_key\":\"CALLER_ID\"},\"events\":[{\"event\":\"addToCart\",\"timestamp\":\"2023-11-14T22:28:21.000Z\",\"item\":[{\"id\":\"SKU-B2\",\"price\":89.99,\"quantity\":1}]}],\"full_url\":\"https://shop.example.com/products/running-shoes\"}") ``` ### Page view A page view becomes a Criteo viewHome event used for home page impression tracking. Event ``` { "name": "page view", "data": { "domain": "www.example.com", "title": "walkerOS documentation", "referrer": "https://www.walkeros.io/", "search": "?foo=bar", "hash": "#hash", "id": "/docs/" }, "context": { "dev": [ "test", 1 ] }, "globals": { "pagegroup": "docs" }, "custom": { "completely": "random" }, "user": { "id": "us3r", "device": "c00k13", "session": "s3ss10n" }, "nested": [ { "entity": "child", "data": { "is": "subordinated" } } ], "consent": { "functional": true }, "id": "230766d96d38b4bc", "trigger": "load", "entity": "page", "action": "view", "timestamp": 1700000903000, "timing": 3.14, "source": { "count": 1, "trace": "0a1b2c3d4e5f60718293a4b5c6d7e8f9", "type": "browser", "platform": "web", "url": "https://example.com/" } } ``` Mapping ``` { "name": "viewHome" } ``` Out ``` sendServer("https://widget.criteo.com/m/event?version=s2s_v0", "{\"version\":\"walkeros_criteo_1.0.0\",\"site_type\":\"d\",\"account\":\"PARTNER_ID\",\"id\":{\"mapping_key\":\"CALLER_ID\"},\"events\":[{\"event\":\"viewHome\",\"timestamp\":\"2023-11-14T22:28:23.000Z\"}],\"full_url\":\"https://example.com/\"}") ``` ### Purchase A completed order is posted to the Criteo Events API as a trackTransaction event with items. Event ``` { "name": "order complete", "data": { "id": "ORD-300", "total": 249.99, "currency": "EUR" }, "context": { "shopping": [ "complete", 0 ] }, "globals": { "pagegroup": "shop" }, "custom": { "completely": "random" }, "user": { "id": "user-123", "device": "device-456" }, "nested": [ { "entity": "product", "data": { "id": "SKU-A1", "name": "Widget Pro", "price": 124.99, "quantity": 2 } } ], "consent": { "functional": true }, "id": "cb498821490cef34", "trigger": "load", "entity": "order", "action": "complete", "timestamp": 1700000900000, "timing": 3.14, "source": { "count": 1, "trace": "0a1b2c3d4e5f60718293a4b5c6d7e8f9", "type": "browser", "platform": "web", "url": "https://shop.example.com/checkout/complete", "referrer": "https://shop.example.com/cart" } } ``` Mapping ``` { "name": "trackTransaction", "data": { "map": { "id": "data.id", "item": { "loop": [ "nested", { "condition": { "$code": "e=>w(e)&&\"product\"===e.entity" }, "map": { "id": "data.id", "price": "data.price", "quantity": { "key": "data.quantity", "value": 1 } } } ] } } } } ``` Out ``` sendServer("https://widget.criteo.com/m/event?version=s2s_v0", "{\"version\":\"walkeros_criteo_1.0.0\",\"site_type\":\"d\",\"account\":\"PARTNER_ID\",\"id\":{\"mapping_key\":\"CALLER_ID\"},\"events\":[{\"event\":\"trackTransaction\",\"timestamp\":\"2023-11-14T22:28:20.000Z\",\"id\":\"ORD-300\",\"item\":[{\"id\":\"SKU-A1\",\"price\":124.99,\"quantity\":2}]}],\"full_url\":\"https://shop.example.com/checkout/complete\",\"previous_url\":\"https://shop.example.com/cart\"}") ``` ### View item A product view becomes a Criteo viewItem event with the viewed product id. Event ``` { "name": "product view", "data": { "id": "SKU-C3", "name": "Coffee Maker" }, "context": { "shopping": [ "detail", 0 ] }, "globals": { "pagegroup": "shop" }, "custom": { "completely": "random" }, "user": { "id": "us3r", "device": "c00k13", "session": "s3ss10n" }, "nested": [ { "entity": "product", "data": { "id": "SKU-C3" } } ], "consent": { "functional": true }, "id": "b1880e8cb3b8e10d", "trigger": "load", "entity": "product", "action": "view", "timestamp": 1700000902000, "timing": 3.14, "source": { "count": 1, "trace": "0a1b2c3d4e5f60718293a4b5c6d7e8f9", "type": "browser", "platform": "web", "url": "https://shop.example.com/products/coffee-maker" } } ``` Mapping ``` { "name": "viewItem", "data": { "map": { "item": { "loop": [ "nested", { "condition": { "$code": "e=>w(e)&&\"product\"===e.entity" }, "map": { "id": "data.id" } } ] } } } } ``` Out ``` sendServer("https://widget.criteo.com/m/event?version=s2s_v0", "{\"version\":\"walkeros_criteo_1.0.0\",\"site_type\":\"d\",\"account\":\"PARTNER_ID\",\"id\":{\"mapping_key\":\"CALLER_ID\"},\"events\":[{\"event\":\"viewItem\",\"timestamp\":\"2023-11-14T22:28:22.000Z\",\"item\":[{\"id\":\"SKU-C3\"}]}],\"full_url\":\"https://shop.example.com/products/coffee-maker\"}") ``` ## Event mapping[​](#event-mapping "Direct link to Event mapping") Criteo uses its own standard event names. Set the Criteo event name via each rule's `name` field. | walkerOS Event | Criteo Event Name | | ------------------ | ----------------------- | | `page view` | `viewHome` / `viewPage` | | `product view` | `viewItem` | | `product list` | `viewList` | | `product add` | `addToCart` | | `cart view` | `viewBasket` | | `checkout start` | `beginCheckout` | | `checkout payment` | `addPaymentInfo` | | `order complete` | `trackTransaction` | | `user login` | `login` | ``` "mapping": { "order": { "complete": { "name": "trackTransaction", "data": { "map": { "id": "data.id", "item": { "loop": [ "nested", { "map": { "id": "data.id", "price": "data.price", "quantity": "data.quantity" } } ] } } } } } } ``` ## User identity[​](#user-identity "Direct link to User identity") Criteo matches users via three signals. Wire them through `user_data` in settings: | Field | Description | | --------------------- | ---------------------------------------------------- | | `mapped_user_id` | Criteo GUM ID | | `email` | Raw email. Hashed into MD5, SHA-256 and SHA-256(MD5) | | `retailer_visitor_id` | Stable retailer visitor identifier | ``` "settings": { "partnerId": "YOUR_PARTNER_ID", "callerId": "YOUR_CALLER_ID", "user_data": { "mapped_user_id": "user.id", "email": "user.email", "retailer_visitor_id": "user.device" } } ``` ## Email hashing[​](#email-hashing "Direct link to Email hashing") Raw emails are lowercased and trimmed, then hashed into all three formats Criteo expects: * `md5`: MD5 hex digest * `sha256`: SHA-256 hex digest * `sha256_md5`: SHA-256 hex of the MD5 hex string Pre-hashed values (detected by hex length: 32 chars for MD5, 64 for SHA-256) are passed through without re-hashing. ## Deduplication[​](#deduplication "Direct link to Deduplication") Criteo Events API supports deduplication with Criteo OneTag by sharing a `deduplication_page_view_id` across channels. Wire it via `data.map.deduplication_page_view_id` in the event mapping. ## Links[​](#links "Direct link to Links") * [Criteo Events API Guide](https://guides.criteotilt.com/events-api/)