--- description: Data available in the Zaraz context object for triggers and actions. title: Zaraz Context image: https://developers.cloudflare.com/og-docs.png --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/zaraz/llms.txt > Use this file to discover all available pages before exploring further. # Zaraz Context Last updated Aug 31, 2026|Copy as Markdown| [View as Markdown](https://4da580d2.previews.developers.cloudflare.com/zaraz/reference/context/index.md)| [Agent setup](https://4da580d2.previews.developers.cloudflare.com/agent-setup/) The Zaraz Context is a versatile object that provides a set of configurable properties for Zaraz, a web analytics tool for tracking user behavior on websites. These properties can be accessed and utilized across various components, including [Worker Variables](https://4da580d2.previews.developers.cloudflare.com/zaraz/variables/worker-variables/) and [JSONata expressions](https://4da580d2.previews.developers.cloudflare.com/zaraz/advanced/using-jsonata/). System properties, which are automatically collected by Zaraz, provide insights into the user's environment and device, while Client properties, obtained through [Zaraz Web API](https://4da580d2.previews.developers.cloudflare.com/zaraz/web-api/) calls like zaraz.track(), offer additional information on user behavior and actions. ## System properties ### Page information | Property | Type | Description | | --- | --- | --- | | `system.page.query` | Object | Key-Value object containing all query parameters in the current URL. | | `system.page.title` | String | Current page title. | | `system.page.url` | URL | [URL ↗](https://developer.mozilla.org/en-US/docs/Web/API/URL) Object containing information about the current URL | | `system.page.referrer` | String | Current page referrer from `document.referrer`. | | `system.page.encoding` | String | Current page character encoding from `document.characterSet`. | | | | | ### Cookies | Property | Type | Description | | --- | --- | --- | | `system.cookies` | Object | Key-Value object containing all present cookies. | The keys inside the `system.cookies` are the cookies name. The property `system.cookies.foo` will return the value of the a cookie named `foo`. ### Device information | Property | Type | Description | | --- | --- | --- | | `system.device.ip` | String | Visitor incoming IP address. | | `system.device.resolution` | String | Screen resolution for device. | | `system.device.viewport` | String | Visible web page area in user’s device. | | `system.device.language` | String | Language used in user's device. | | `system.device.location` | Object | All location-related keys from [IncomingRequestCfProperties](https://4da580d2.previews.developers.cloudflare.com/workers/runtime-apis/request/#incomingrequestcfproperties) | | `system.device.user-agent.ua` | String | Browser user agent. | | `system.device.user-agent.browser.name` | String | Browser name. | | `system.device.user-agent.browser.version` | String | Browser version. | | `system.device.user-agent.engine.name` | String | Type of browser engine (for example, WebKit). | | `system.device.user-agent.engine.version` | String | Version of the browser engine. | | `system.device.user-agent.os.name` | String | Operating system. | | `system.device.user-agent.os.version` | String | Version of the operating system. | | `system.device.user-agent.device` | String | Type of device used (for example, iPhone). | | `system.device.user-agent.cpu` | String | Device’s CPU. | | | | | ### Consent Management | Property | Type | Description | | --- | --- | --- | | `system.consent` | Object | Key-value object containing the current consent status from the Zaraz Consent Manager. | The keys inside the `system.consent` object are purpose IDs, and values are `true` for consent, `false` for lack of consent. ### Managed Components | Property | Type | Description | | --- | --- | --- | | `system.clientKV` | Object | Key-value object containing all the KV data from your Managed Components. | The keys inside the `system.clientKV` object are formatted as Tool ID, underscore, Key name. Assuming you want to read the value of the `ga4` key used by a tool with ID `abcd`, the path would be `system.clientKV.abcd_ga4`. ### Miscellaneous | Property | Type | Description | | --- | --- | --- | | `system.misc.random` | Number | Random number unique to each request. | | `system.misc.timestamp` | Number | Unix time in seconds. | | `system.misc.timestampMilliseconds` | Number | Unix time in milliseconds. | | | | | ## Event properties | Property | Type | Description | | --- | --- | --- | | `client.__zarazTrack` | String | Returns the name of the event sent using the Track method of the Web API. Refer to [Zaraz Track](https://4da580d2.previews.developers.cloudflare.com/zaraz/web-api/track/) for more information. | | `client.` | String | Returns the value of a `zaraz.track()` `eventProperties` key. The key can either be directly used in `zaraz.track()` or set using `zaraz.set()`. Replace `` with the name of your key. Refer to [Zaraz Track](https://4da580d2.previews.developers.cloudflare.com/zaraz/web-api/track/) for more information. | | | | | Was this helpful? YesNo ## On this page [![](https://4da580d2.previews.developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://4da580d2.previews.developers.cloudflare.com/) ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/zaraz/reference/context/#page","headline":"Zaraz Context · Cloudflare Zaraz docs","description":"Data available in the Zaraz context object for triggers and actions.","url":"https://developers.cloudflare.com/zaraz/reference/context/","inLanguage":"en","image":"https://developers.cloudflare.com/og-docs.png","dateModified":"2026-08-31","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. 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